Who knows what reason the Lenovo S899T mobile phone can only make an emergency call

I really don't see this problem, you try it soft grid! *7370, the default password is 12345

Or in the shutdown state, install the red key + green key + camera key and the computer at the same time, and go online.

We apologize for the inconvenience.

Lenovo S899T supports mobile cards (mobile 3G, 2G networks). If you insert a SIM card in the above range and an emergency call prompt appears, it is usually caused by no signal or poor SIM card reading

a.Occurs in all environmental situations:

2.If the SIM card is still in no signal and service state, it is recommended that you send it to the repair station in time for processing;

b.Intermittent occurrence:

1.Whether the surrounding network environment is normal at that time, it is recommended that you go to other regions for comparison, or make a simple comparison with nearby users.

2.It is recommended that you change the SIM card for comparison, if the individual SIM card appears, it is recommended that you contact the operator for further processing;

3.If it occurs recently, it is recommended that you can back up the fuselage data for a factory reset attempt, and the factory reset menu path is: System Settings - Backup and Reset;

If the above operations cannot be improved, it is recommended that you contact Lenovo authorized maintenance sites in time and hand them over to engineers for inspection 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.

That's because you didn't pick the lock.

Official website authorized maintenance site inquiry:

The common causes and solutions for phone not receiving calls** are as follows:

Method 1] Check whether the mobile phone is in arrears and shut down, and it is recommended to pay the fee and recharge;

Method 2] Check whether the phone is set up for call forwarding, turn on airplane mode, call restrictions, etc., and it is recommended to try again after canceling;

Method 3] Check whether the function or signal of the mobile phone is normal, it is recommended to change the mobile phone or location and try again;

Method 4] If you cannot use it when roaming to other places, it is recommended to check whether the local network signal is normal and whether the number has been activated for roaming permission;

Method 5] Try to restart or change the phone to see if it can receive calls**;

Method 6] Bring the mobile phone card to the local business office for testing or replacement of the mobile phone card.

We apologize for the inconvenience.

If your device is in normal standby mode, but others are calling you, it is recommended that you first check whether the relevant whitelist or blacklist function is enabled, and please turn off the function.

If it is not caused by similar functions, we recommend that you try to change the SIM card to rule out whether it is caused by SIM card failure.

If the above operation is invalid, Youhu recommends that you back up your data and try to restore Qingheng factory settings to rule out whether it is caused by system abnormality. If restoring the factory settings still does not solve the problem, you need to go to the Lenovo repair site for testing and maintenance in time.

You can access:

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

Dear Lenovo users, hello!

Dear Lenovo users, hello!