Lenovo A788T Android 4 3 Mobile, the signal is not good, you need to restart the phone first to have

We apologize for the inconvenience.

According to your description, it may be related to the signal coverage in your area, here it is recommended that you first select 3G 2G through system settings - data connection - network mode to avoid such situations due to 4G signal problems in your area.

If the problem persists, it is recommended that you try a factory reset, which you can find in System Settings - Backup & Reset. Since restoring factory settings will erase the original data information, it is recommended that you make a backup first, you can use the cloud service for cloud synchronization or you can back up the data on the computer through the Le Assistant, you can visit the cloud service official**.

Hele assistant official**.

If this situation persists after recovery, it is recommended that you change to another SIM card to try. If the fault persists, it is recommended that you contact Lenovo's authorized repair site in time and hand it over to an engineer for inspection and maintenance, which you can access.

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.

It could be an internal issue of the system', first see if there is an official upgrade package, if not, find customer service or flash the machine yourself.

1. Whether it is caused by the poor signal of the surrounding network environment, you can try to change the network environment, or compare it with other users around to check.

2. It may be related to the SIM card or abnormal contact, try to change other SIM cards and then test and use.

3. After trying to back up the important data of the fuselage, restore the factory settings of the device to see if it can be improved.

If the problem persists, it cannot be ruled out that it may be caused by the abnormality of the RF circuit of the mobile phone motherboard, and the signal reception is abnormal, which needs to be tested and checked by the local Lenovo after-sales service center.

If you are unable to use the 4G network, we recommend that you try to check and perform the following steps:

1. It is recommended that you first try to go to the device's settings - data connection - click - network mode - 4G priority and then observe and use.

2. Replace other mobile 4G cards for testing, which may be caused by the abnormality of the mobile 4G card you are using.

3. If the network environment is not covered by 4G network, it is impossible to use 4G, you can consult the operator for details.

4. After trying to back up the important data of the fuselage, operate and restore the factory settings of the device to see if it can be solved.

If it can't be effectively solved, we recommend that you take the time to go to your local Lenovo after-sales service center and let the engineers help test and solve the problem.

Official website authorized maintenance site inquiry:

The reason for the problem:

1. The surrounding environment network is relatively poor, which will lead to the signal being in a non-service state;

2. Some reasons of the system itself, resulting in the mobile phone cannot be connected to the network; Workaround:

1) Turn on airplane mode and then turn off airplane mode, and the system will search for network signals again. Open [Settings] in your phone, then turn on the button to the right of the [Airplane Mode] option, wait a few seconds and then turn it off;

2) Fix the no-service issue by restoring the network settings, reverting to the default factory settings, or by restarting the phone;

3. Problems with mobile phone SIM card; It is recommended to try changing the SIM card.

4. If the mobile phone card slot or motherboard is caused by hard problems, it is recommended to send the mobile phone to Lenovo after-sales outlets for testing.

Lenovo A788T mobile phone suddenly has no signal, it is recommended to:

1. Restart your phone and try; Plug and unplug the SIM card and restart the attempt;

2. Try to change the environment and change the card.

3. Backup data to factory reset attempt.

4. If it is invalid, you can contact Lenovo mobile phone for after-sales testing.

Nothing to do with the phone! Our side is the same drop! The 3G signal is worse than the 4G signal! Operator's fault!

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