Samsung usb does not see. What to do if the computer does not see the Samsung phone

Question from user

Hello.

Tell me with one problem ... I connect the phone (a regular smartphone with Android) to the USB port of the computer. There is a connection sound, the phone is charging, but I can’t go to it and copy the files, the PC does not see it! What can be done (I have already rearranged the drivers twice, downloaded the official ones from the manufacturer's website)?

Good time!

The reason for the problem you describe is most typical for incorrect android settings(by the way, in the vast majority of cases this is true). For example, in the phone settings, there is no checkmark that the device must be connected as MTP (a media device with which you can exchange files).

Actually, in this article I will analyze this reason, and some of the others that are most often encountered in everyday work. So...

Reasons and solution for the "invisibility" of the phone

1. If the phone is charging from the port, and sound is heard when connected

1) USB connection settings to a computer

The first thing to pay attention to is the notifications that appear on the phone's screen immediately after it is connected to the USB port. By default, the phone is not always immediately visible in Windows - very often, unless specifically allowed to share files with the device, it will only charge (like the author of the question).

A notification in Android pops up immediately after it is connected to USB - you need to open this notification (the name is "Device connected"). See example below.

1. the device can work in MTP mode - i.e. an option that allows you to exchange files with it (which we need);
2. in charging mode: i.e. except for charging the phone, other functions and settings will not be available;
3. Camera (PTP): Allows you to transfer photos using a dedicated camera. software.

Actually, just check the box next to "Media device (MTP)" - ideally, the sound of connecting a new drive in Windows should immediately sound, and in "My Computer" (Explorer) you will see your device. Mission accomplished?!

2) The machine is in modem mode

Go to settings at: "Wireless networks → More → Tethering mode". In this section, you must turn off all options for operating the device as a modem.

The fact is that when you turn on the mode, say, a USB modem, the device cannot simultaneously be a modem (sharing the Internet on a PC), and exchange files with it, like a flash drive ...

3) Try running USB Debugging

Very often, the "USB debugging" tool helps to solve the problem. This function built into Android. True, there is one feature: it can be "a little" hidden from the eyes. Below I will consider options for how to start it.

4) There is no driver for the USB root hub, for the phone

Another popular reason for the "invisibility" of the phone is the lack of drivers. Moreover, there may not be drivers for both the USB hub of the computer and the phone itself. (even newfangled Windows 10 is not able to recognize and automatically install drivers for some types of phones).

To view driver status - open device Manager (for this you can use either the Win + Pause button combination (and then see the menu on the left), or the Windows control panel) .

In Device Manager, expand the USB Controllers tab and see if you have a USB hub. I recommend clicking on it with the right mouse button, in the pop-up menu select "Update driver" and follow the instructions of the master (Important! Try and automatic option updates, and manual! Often with the manual option, you can choose from several driver versions - try different ones) .

Remarque!

In general, ideally, it would be better to run a special. a comprehensive driver update utility and check your system with it. For example, Driver Booster allows you to do this in minutes:

Please note that if the driver is installed on the phone, then in the "Portable devices" section - you should see the name of your device (most often just its model).

2. If the phone is not only not visible, but also does not charge from the USB port (does not show signs of "life")

If absolutely nothing happens when the phone is connected to the USB port, then it is obvious that there is no contact (no power is supplied from the USB port to the device). Most often, in this case, it is necessary to look for hardware reasons for this behavior: for example, the cable may be broken, the micro port is broken Phone USB etc.

I'll go through the most likely reasons below...

1) Is the phone itself turned on?

Maybe this reason is too "banal", but if you have new phone or the battery is discharged to such a state that the device simply turns off - then by connecting it to the USB port, it will only charge! Until the battery "gains" 5-10% of the charge, usually the device does not turn on and you will not be able to access it.

In this case, it remains only to wait for a sufficient degree of charging of the device...

2) Are the battery contacts sealed with tape ...

This option applies to new phones and batteries. If your device is new - check the contacts of its battery. Its inoperability may be due not only to discharge, but also to the fact that the battery contacts can be sealed with adhesive tape. Manufacturers do this for the sake of safety during transportation.

Battery contacts sealed with tape

3) Is everything okay with the USB cable

Next, pay attention to the cable with which you connect the device to the PC: is everything okay with it? Often, from frequent use, the thin copper wires in the cable itself are damaged (i.e., the cable may look completely intact on the outside, but be broken inside).

Therefore, try using the same cable to connect another device (you can use another PC / laptop). Purpose: to check the cable itself, whether it works ...

4) Is the USB port of the computer operational?

The same applies to the computer's USB port: try connecting another phone, USB flash drive, etc. to it. Does the computer see them, can they exchange files?

Also note that the system units, in addition to the front panel with USB ports (which most users connect devices to), also have USB on the back wall. Try connecting your phone to them.

Remarque! Often, when the front panel with USB ports and audio jacks is forgotten to be connected.

5) Check the phone by connecting it to another PC, laptop

It will not be superfluous to check the phone itself with a USB cable by trying to connect it to another computer. Purpose: to make sure that the device itself, its micro USB connector, is working.

6) Is there enough power (is there a USB splitter installed)

Well, the last point worth paying attention to: do you use various splitters and extension cables for USB? It is not uncommon when a USB port is added to a keyboard, mouse, speakers, monitor, etc.

The fact is that when using various splitters, there may not be enough power for your phone (this often happens with external hard drives as well). If you want to connect many devices to one USB port, then use splitters and hubs that have an additional power source (as in the photo below).

PS

Please note that if you connect your phone to USB only to transfer some files, photos from the device’s memory to HDD PC, I recommend to try alternative ways. For example, files can be transferred over Wi-Fi using network drives, flash drives, etc.

Thanks in advance for additions...

And that's all, good luck everyone!

Sometimes when working with a laptop there is a problem - he does not see the phone. First of all, you need to find out the cause of the problem. In general, all methods for solving the problem are designed for smartphones with the Android operating system, however, some steps will be useful both for tablets with this system and for phones with a different OS. For laptops, the information is relevant with Windows and MacOS.

Description of the problem

If you are using macOS, install Android File Transfer

The problem of connecting a phone to a laptop can be two-sided - in case of malfunctions, both devices may not work correctly. If after buying a new smartphone there is no connection, and the old one works fine with the laptop, then most likely the problem is in the latter (for example, it is worth updating Windows).

On the other hand, the reason may be the presence of a pattern or password on the mobile device. Therefore, it is best to understand both directions at once.

The most common causes of failure

If the computer does not see the phone via USB, resetting the smartphone using hard reset

Among the most common causes for which the smartphone cannot be detected by the laptop, the following should be highlighted:

• malfunction, dirty USB output on a mobile device;
• the output for a wired connection may also not work correctly on a laptop;
• an old version of the operating system installed on the computer;
• lack of necessary programs for device communication for both Windows and MacOS;
• the presence of protection against unauthorized entry into the phone - this can be a graphic key, a digital or numeric password, a fingerprint unlock function or owner's face identification;
• automatic connection of a smartphone to a computer as a camera or use it as a charger- it will not be possible to fully interact with the mobile in these modes;
• lack of a Bluetooth module on a laptop or a malfunction in its operation due to old drivers and software;
• the function of Bluetooth discovery by other devices on the phone is offline - it may be inactive, even if the module itself is connected;
• broken or damaged USB cable;
• incompatibility of ports on a laptop, cable and mobile device- for example, new versions of phones with the latest Android versions may not work with USB 2.0 connectors, they require 3.0 ports;
• obsolete software or drivers responsible for working with USB.

What to do if the laptop does not see the phone

So, you still found that the smartphone cannot connect to the laptop. First of all, you need to find out on which side of the connection the problem lies. It is possible that there are problems on both devices, it is also possible that the problem is in the cable (when communicating via USB).

Via USB

In this case, the presence of current versions laptop drivers. Due to the serious "age" of the operating room Windows systems XP to work with latest versions android updates may no longer exist. In this case, you can install the Media Transfer Protocol. It is downloaded from the official Microsoft website, after rebooting the laptop everything should be in order. To work with MacOS, you may need android program File Transfer (for interacting with Android). When connecting with iOS, no additional software is needed.

For owners of Windows 10, you may need to install update KB3010081, which is responsible for working with Windows Media Player

You also need to check the performance of the USB ports, clean them both on the computer and on the phone. It is worth trying several cables if the connection fails the first time.

New Androids often only work with version 3.0 ports, which are installed on all modern laptops along with the old 2.0 connectors. You need to try to connect using all available ports.

Unlock the phone, a message may appear on the screen asking you to change the interaction mode. By default, on many smartphones it is set as "mobile device charging", the camera mode is quite rare. To change the standard mode, go to the phone settings, then to the "USB" tab (it can be separate, located in the "Communication" or "Connection" menu), select the desired format.

The problem may be in blocking the ability to detect any USB connections at all (including flash cards) on the computer. To check this, just try connecting other devices to the laptop. If nothing works, go to the "Control Panel", then "Troubleshooting" and "Device Settings". May need manual setting, also, it may be possible to manage only by installing fresh drivers.

Via Bluetooth

When working via Bluetooth, you first need to make sure that the laptop has this module: either built-in or connected from the outside. The computer checks its mode of operation, whether the detection feature is enabled, and whether the latest drivers are installed. There are also third-party modules that, in addition to being activated via a laptop, require mechanical pressing of a button on their own case. Most often this applies to connected devices (headset, speakers).

Try checking your computer with Dr. Web CureIt!

Then the same actions are carried out on the smartphone. By default, on a lot of Android phones, the discovery function does not work even when bluetooth is activated. The situation is similar on the iPhone.

Other reasons why the laptop does not see the phone when connected in this way are hardly possible.

Nuances for phones of specific manufacturers

The problem of connecting a phone to a laptop mainly occurs with devices from Samsung, Lenovo, HTC, LG and Fly

In general, the operation of phones on one operating system Android is not much different. Even "apple" products, in principle, interact with the computer in the same way. However, some nuances are still present. For example, connecting an Android phone to a laptop with macOS installed most often requires special programs, which are not needed when using iPhone or iPad. With Windows, this is usually not necessary.

For all Android devices, including Samsung and Meizu, the same connectors are made for connecting a USB cable.

Samsung

If you connect an Android smartphone to a laptop or PC under Windows control XP and the computer does not see the phone, you need to install MTP (Media Transfer Protocol) for Windows XP

Samsung phones are equipped with the Android system. Certain nuances are possible only in the USB and Bluetooth connection settings menu. Drivers are also different - you need to look under specific model phone and firmware version. Programs designed to work with Android (Android File Transfer for MacOS) will work with all Samsung devices.

Meizu

Smartphones from Meizu are also Android devices. There may be some changes in menu navigation in different firmware and models. As with Samsung, Android File Transfer works great with them. Mobile devices of this company require drivers for a specific type of phone and software.

If you have eliminated the most likely causes of the problem, but you still could not connect the phone to the laptop, then it is recommended to contact a specialist. Perhaps it is more serious problems with one of the devices.

Connecting via a USB port is one of the most popular ways to quickly transfer data today. You can also simply charge the connected device using the USB connection. Such functions are in demand, so nowadays almost everyone has one, or even several, flash drives, a smartphone or tablet connected via a USB port, and various accessories ( smart watch, MP3 players, etc.), which are also connected to the PC.

Naturally, with such a variety of devices, some errors will certainly occur. Basically, they are divided into two categories: recognition errors, which this article will be about, and formatting errors, about the solution of which you can read.

Recognition errors are also divided into two groups: an error in which the USB device is not recognized, and an error when, after connecting the device, the computer does not respond to it.

"USB device not recognized" - what to do in Windows 7, 8

Any computer can suddenly throw out such an unpleasant surprise with any device: USB drives, smartphones, tablets, computer mice, keyboards, accessories, printers, scanners ... With everything that can be at least somehow legally connected via USB, such a problem may arise, but for almost any device, this error is solved in the same way.

The first thing to do when Windows doesn't recognize a device is to check if it's working. Connect the gadget to another PC or laptop. If the error remains on another device, then the whole problem is in the device itself (or the cable through which you connect it) and, most likely, nothing will help you except going to the store for a new analogue.
Also try connecting the device to a different USB port, temporarily disconnecting unnecessary equipment. If nothing worked, then go to the next paragraph.

Go to device manager. Press Win + R and enter the command devmgmt.msc. In the window that opens, try to find your device (it will be located either in USB Controllers or in Unknown Devices). If it so happened that it got into the "Unknown devices" tab, right-click on it and update the drivers. In the event that the gadget is in the "Controllers", then right-click on it again, go to "Properties" - "Driver" - "Update". If the update button is not available, then go back to the manager and click "Delete". After that, open the "Action" tab and select "Update hardware configuration", after selecting your USB device.

The above algorithm of actions usually works both when a regular flash drive is not recognized, and when when you connect the phone to the computer “ USB device not recognized."

The computer does not see the flash drive via USB

Firstly, your personal computer most often does not detect a USB flash drive due to the fact that it is faulty. To check this, insert the USB flash drive into another device. If it does not work and is not dumb, then feel free to buy another flash card.
Second, check the connector for dirt. Naturally, if banal dirt gets into the flash drive connector, it will not work correctly.
Thirdly, try inserting the USB flash drive into another slot on the computer (usually there are several).
Next, try formatting your flash drive for the computer's file system. You can see which file system on your PC by going to the properties of the local disk. Now you just need to specify when formatting which file system you need.

Phone not detected via USB (Android)

A smartphone is usually connected to a PC in order to transfer data and files to it that are difficult to transfer in another way. You connect your smartphone via a special cable, but nothing happens, and Windows does not react in any way to a new connected device and simply charges its battery.
But why does the computer not see the phone via USB on the android, it only charges and nothing else? How to solve it?

1. If you bought new smartphone and try to connect it to old version operating system (Windows XP, for example), which is not currently supported, you must either upgrade to a newer OS, or download the Media Transfer Protocol program from the official Microsoft website, install it and restart your PC - everything should work.

2. If you have multiple USB ports on your computer, try connecting your smartphone through a different port.

3. Try changing the USB cable. Cable faults are one of the possible obstacles to a USB connection.

4. Check the connector of the smartphone itself. Remember if you dropped it into the water?

5. Connect your smartphone to any other device (PC, laptop). If the phone just as stubbornly does not want to work correctly, then the problem is either in it or in the USB cable. If everything worked, then the whole problem is in the computer options - go to the next step.

6. Try plugging another device into your computer (a flash drive, for example). If an error also occurs with other flash drives, then go to the "Control Panel" and select the "Troubleshooting" item. In it, click on "Device Settings". An automatic setup will take place.

7. If the computer still does not see the smartphone, then only updating the drivers remains.

Note: the newest phones are now set by default not to transfer data, but to charge. To check what type of USB connection is used, use the simple instructions from the screenshots below.

Problem connecting USB stick to tablet

Some tablets now have the ability to connect a USB drive. Through a special adapter, you insert a regular USB flash drive, the tablet does not react at all. So why does the tablet not see the USB flash drive through the adapter?

The main reason for this error is different standard file systems. Then you need to format the flash drive in FAT32 (modern tablets are sharpened for such a system) through a computer.
If this does not help, then you need to get root access to the device and boot from Google Play the StickMount application, through which you can virtually mount a USB drive after inserting it into the tablet.
If none of the above methods helped, then think about repairing the tablet.

There are times when a computer does not want to “see” an android connected via usb. Do not despair, there are several options that will help the laptop see the light!

These methods are suitable for phones like Android as they are based on this moment, the most common gadgets, but these same methods will help to cope with the problems that have arisen with other devices and their OS, for example, with a tablet.

So why does the computer not see the phone through usb android just charging?

First, you should remember: Has this always been the case or has the computer seen an android before? The gadget is not visible after some actions have been taken with it, have the programs changed on the laptop, the antivirus? No one did anything with the devices, and here such a problem surfaced?

old model android

Having understood what is the situation, you can begin to solve the problem. So purchased. new android and his laptop on Windows XP sees, while the phone of the old model, let's say, connects to the computer easily, like a flash card. You can start by updating the OS to the version that the android will support. And you can immediately install MTP (driver for android) on a new device that works with Windows XP.

You can download the MTP from their official website, then install it, then reboot the device, and after that, the android will be seen by the computer.

Now you can think of a different situation. Why does the computer not see the phone via usb android only charging? For example, the computer does not see the phone in Windows 7, also in version 8 and 10. The steps below are for Android 4 and 5 phones.

1. First, you need to unlock the connected tablet or phone to the computer that was locked with a password or pattern, and only then, you can see the folders on the monitor and files.
2. Next, you need to make sure that the smartphone is connected via usb and there is a message about this - “connected”, and this does not mean only recharging. You can see such a message either by opening the notifications tab in android, or by a special icon - USB, where it will be written that the phone is connected and as what device. And it can be RTR - Camera, or a device for saving data, maybe a usb modem. If you do not see any notification, then you can click on the notification that says that in this case the modem is used and turn it off, or do this - click "Settings", then " Wireless network” and then click “More”.

If the question is asked again, why does the computer not see the phone via usb android only charging? This means that it will be visible as a connected camera. You should click on the notification saying this and turn off the MTP mode so that you can transfer files.

If the android is an old version, then there are many times more modes for usb connection, and the most popular is Data Warehouse. You can switch to this mode if you click the message itself, which says about the connected usb, and then find the mode of interest.

The phone is charging all the time, when connected ...

We try to do the following, such methods ...

• Try to connect to usb 2.0, not blue, available on the rear panel. If this is a laptop, then we are looking for - usb 2.0, not paying attention to color.
• Search, or ask friends if they can borrow some other usb cables, maybe you have a faulty cord in your hands, and others will succeed!
• The source of the problem may be hiding in a faulty smartphone socket. Maybe it was already under repair, maybe moisture got in. And in this case, you need to carry the android for repair.
• It is worth checking such a possibility as connecting a smartphone to another laptop, computer, tablet. Perhaps the socket on the laptop is not working properly? But, this is in the event that on another device, everything worked.

And here it’s worth considering, but has a flash card ever been connected to this “faulty” computer?

If you have never connected a flash drive to a laptop, then you can do this:

Go to " Control Panel"(do all the steps on the computer where the cable with the phone did not work), then -" Troubleshooting", Further - " Device setup and the problem should disappear automatically.

Nothing happened, everything is still the same. Let's do it!

We try to go to the tab " Device Manager”, and then turn off energy saving. If nothing helps, even on other computers, then the problem lies in: bad, hastily, android settings were checked; faulty cord; bring your smartphone in for repair.

There are several more methods that should help in resolving the issue - Why does the computer not see the phone via usb android only charging? Let's try them...

If you have the latest version of android in your hands, then it connects to the computer with a usb cable, but only at the time of recharging. In notifications, you can check if other modes are available for usb operation, if you encounter such a model, then you should do this: select the item " USB charging”, well, or try other options.

If, after all the tried methods, it became clear that the reason lies in the malfunctions, say, the cord itself is faulty, or the computer socket is broken, or something else ... The only advice- do nothing on your own, especially if you have not previously repaired computer equipment.

There is another option. All necessary important files can be transferred from the phone, or to the phone by selecting the following:

1. Synchronization by selecting one of the cloud storages, such as OneDrive, or Google Drive, Yandex Disk or Dropbox.
2. You can try to use the following programs, that is, choose one of your favorites. For example - AirDroid. The program is very convenient, simple, understandable to every novice user!
3. If you create an FTP server on your gadget, or connect it like a network drive in Windows, you can send any files.

But, in any case, no matter what method is chosen, you need to try it, but you also need to choose the method that you know about, otherwise, both the phone and the laptop can be filled with “garbage” and then you need a full reset all settings.

There are cases that when you connect the phone to personal computer or laptop via USB cable, the former does not recognize it. It becomes impossible to reload files from phone to computer and vice versa. It's annoying.

However, there are ways to recognize the cause of this type of incident and ways to correct it. If your phone is not just a mobile phone, but a gadget that has an operating system, then reloading files via USB is not possible in the usual way, i.e. the phone is no longer like a regular flash drive - it is a computer itself. In order to transfer files from the phone, you will either have to reflash it or send files by mail.

I recently encountered a similar problem on my phone samsung galaxy: until the gadget was set up in computer mode, reading files and downloading them to a PC via a USB connection was impossible, after "reconfiguration" this became impossible.

However, there are cases when the phone works in normal mode and acts as a flash drive, but the PC still “does not see” it. Why? What can be done in this case to try to fix the problem. Read below.

Music, movies, photos, apps - it's all a must modern man on his phone. Without communication with a PC, the mobile phone will dramatically lose its functionality. Close interaction is provided through a connection via a USB cable or via Bluetooth. Since file transfer via Bluetooth is quite slow, the USB connection is the most common.

But the user, having decided to use data transfer via a USB connection, suddenly cannot do this. Understanding his frustration, let's give him some advice. To do this, consider two options: when the computer does not respond at all to connecting a mobile phone, and also if the phone is defined as an unknown device. So, now in more detail.

Troubleshooting procedure

At the time of connection to the computer, your phone is not detected in any way, nothing lights up on it, and there is no message on the monitor about connecting the device. This is a fairly common malfunction, for which there are several reasons. Let's try to list them and give recommendations on how to fix this problem. It assumes that the USB port you are connecting to is healthy. That is, other devices work normally through it.

1. If the phone used to connect normally, and then suddenly didn’t want to, then it’s worth, first of all, to suspect the quality of its connection with the computer. Try removing the connection cable from the mobile and from the USB input and then reconnecting them. It often happens that the contacts of the telephone jack are trite loosened or dirty. This problem is inherent in the brand to a greater extent. Sony Ericsson, whose models stand out on the market mobile communications completely illiterate and often failing connector.

Tip: if possible, try to clean the phone jack with an eraser, then remove the remaining rubber from the contact surface.

If cleaning did not help, then connect the phone through another USB cable. Take it from friends or relatives. Cable failure is not the most popular cause of trouble, but this option must also be taken into account. If it helps, then you just need to buy a new accessory.

2. Restart your computer. Oddly enough, this method in most cases helps without any additional measures. The reboot process resets the system settings and redefines the USB ports. By the way, when the computer does not see the tablet, restarting the computer helps best of all, as is the case with the phone.

3. Did restarting the PC help? Then, to be sure, restart your mobile phone. Turn it off, take out the battery for 10 minutes and then put it back in. Turn on the machine. Nothing happens? Move on.

4. Disconnect the cable from one USB and connect it to another USB input. Such a simple action very often helps, as the computer sometimes confuses ports. To make sure the OS sees the connection, you can use in the following way. Go to "Device Manager" and find a list of ports in use there. Typically this information includes all USB bus controllers. Open the list. In it you can see all the working ports of the computer. Find in this list the port to which the phone is currently connected (this can be seen in the "Power" column). All other ports, except for the one found, can be temporarily disabled. The computer will have no choice but to see your mobile.

There is, of course, the possibility of damage to the phone itself or its connector. This is the most difficult option, in which, without contacting service center not enough. There they will be able to tell you exactly why the computer does not see the phone and how to fix it.

USB device not recognized

We go further, considering the second case, in which the computer identifies the phone as an unidentified device. Of course, the OS does not want to work with an unknown device. And the question is not that Windows itself is imperfect, because Linux and other operating systems often have the same problems. Therefore, we must help the computer to identify our mobile phone. We list the reasons for this phenomenon and possible actions user:

The problem may be with the phone itself. Connect the machine to another computer. If the problem persists, then the cause lies inside the mobile device. You may need to enable one of the connection modes with a computer in the settings. For example, the "Data transfer" or "Drive" mode. Experiment with these modes;

Tip: Check your phone settings. In some mobile models, you must manually enable the synchronization mode, which is disabled by default. Or turn off the standing lock. If there is a lock, open access must be set.

a) restart your PC and phone as described in section 1;

b) often the mobile phone is not recognized by the OS in case of power failure. If you are connecting the phone to the front of the computer, then try connecting it directly to the motherboard, in the USB slot located on the back of the system unit;

Tip: In the "Device Manager" section, find the port you are using and open the "Power Management" tab. Check if the box "Allow the device to turn off to save power" is not checked. If there is a checkmark, then uncheck it.

Sometimes there are failures in the OS, as a result of which the “native” drivers of some devices are lost. Reinstalling the drivers helps resolve the issue. motherboard and for connected devices. If your phone came with a driver disk, use it to connect the device;

Tip: You can check if the device needs drivers in the "Device Manager". If there is a yellow question mark in front of the device name, it can be concluded that there are no drivers for this plug-in. And how to determine that an unidentified device is a mobile phone? Very simple. Disconnect it from the computer and then question mark will disappear.

It is also impossible to exclude the possibility of infection of the OS by a virus that sets its own rules on the computer. Check all disks (including system) good antivirus with up-to-date bases.

If none of the above helped you, and there is still no connection between the mobile phone and the computer, then you can apply a radical treatment. If the phone is perfectly detected on another PC, then the cause of the problem most likely lies in the operating system. You will have to reinstall the system. Then it will surely work. Moreover, such errors in the system accumulate gradually, it is impossible not to notice. Thus, reinstalling the software part will solve not only the issue of connecting the phone, but also eliminate other possible errors.