My Lenovo A850 Bluetooth often turns off by itself, and the wireless network changes by itself.

We apologize for the inconvenience caused.

If Bluetooth shuts down and the wireless network changes by itself, it may be due to the fact that your Bluetooth has not been paired and connected within a certain period of time, and the wireless network signal source is weak.

When Bluetooth is not connected, it will turn off by itself, you can set it in System Settings - Bluetooth to click on your mobile phone model to set the detection; Click the Menu key to set the detection timeout setting.

When the connected wireless source is weak enough to support the connection, the system will disconnect and connect the open source with a stronger signal, it is recommended that you check whether the connection is in good signal strength; In addition, if the number of connected sources is too large, it may also cause you to connect to other sources after disconnection, so please try to connect to other sources.

If your problem persists, it is not ruled out that the system is abnormal, it is recommended that you try to use a factory reset, you can find the corresponding option through System Settings - Backup and Reset. Since restoring factory settings will erase the original data information, it is recommended that you make a backup first, you can use LeSync for cloud synchronization or backup data on the computer through LeSync, you can visit LeSync official**.

Hele assistant official**.

If there is still an abnormality after recovery, it is recommended that you contact Lenovo's authorized repair site in time and hand it over to an engineer for testing and maintenance, which you can visit.

Find the nearest site. The business hours of the maintenance site are usually from 9:00 to 18:00 from Monday to Sunday, except for holidays, and the stations will be slightly adjusted according to their own operations.

Change your phone or use a laptop for wireless testing If other mobile phones are fine, it is recommended that you go to the after-sales service to take a look, and you can also flash the phone to try because the Android system failure is not necessarily a hardware problem.

Hello dear users:

If you have other wireless networks nearby, please try to compare:

a. Other networks can be connected normally, you can judge that the mobile phone system and hardware function are normal, please try as follows:

1. Password correctness: In most cases, it is caused by the failure of password verification, it is recommended that you try to confirm whether it is caused by the wrong wireless password input, you can verify it by modifying the encryption method or canceling the encryption;

2. Wireless network signal: When the wireless signal signal is weak, it may lead to the inability to connect normally or the application cannot be connected to the network normally, it is recommended to move the mobile device to the wireless network signal is strong to try;

3. Abnormal wireless network parameters: In order to avoid abnormal connection due to abnormal wireless network parameters such as DNS, it is recommended that you can try to set the wireless network as static IP allocation, and the static IP setting menu of the product is as follows: System Settings - Common Settings All Settings - WLAN - Click to open "WLAN" - select the available encrypted network - check "Show advanced options" - click the small triangle of "IPC4 settings" and select "Static" - Enter the static IP address that you want to set in the address bar.

4. If the above suggestions still cannot be improved, it is not excluded that the compatibility between the routing equipment and the product is caused, and it is recommended that you replace the wireless network or routing equipment for use;

b. If other networks cannot be connected normally, it may be caused by abnormal system or hardware functions

1. Please back up the fuselage data and try to restore factory settings;

2. If it still cannot be improved after recovery, please take the time to go to the local maintenance site to test and process the system and hardware.

If the conditions are limited and you cannot compare with other wireless networks, it is recommended that you conduct a simple investigation based on the above suggestions, and if it cannot be improved, please send it to the repair site in time. Official website authorized maintenance site inquiry:

You are welcome to contact us at any time or visit Lenovo Lewen (for consultation.

Looking for after-sales service, it may be a hardware failure.

Hello, the most likely is a temporary system failure, and you need to reset the router options. Here's how:

1. Log in to the router management address according to the information on the back of the wireless router (including router IP address, login username and password).

2. In the router management interface, switch to the "Wireless Settings" tab, click the "Wireless Encryption" item, and you can set the "Safe Mode" in this interface.

3. Click on the "Safe Mode" drop-down list and select "WPA2-PSK" from its extended list, which is a secure encryption mode that all mobile phones can support.

4. Click the "OK" button to save the settings. Finally, switch to the "System Tools" tab and click the "Restart Router" button to restart the router.

5. Finally, you can try to use your mobile phone to connect to the wifi hotspot, if the fault still exists, it is recommended to change to other "safe mode" types to try to solve it.