The mobile phone is associated with it, and suddenly I can't receive the express message. I don't have mobile phone security software installed, but I can't get on it. What happened? Seek answers.

Hello, dear Lenovo users.

According to your description,

I suggest you try to restore the factory settings of your mobile phone:

Method 1: Go to System Settings-Privacy (please select Backup Reset for advanced version of Android phone)-Restore factory settings-Reset the phone.

Method 2: Press the power button+volume button at the same time when the mobile phone is turned off; Please select the erase date after entering recovery;

If the problem cannot be solved, we will provide you with a link to Lenovo's mobile phone after-sales service site, and a special engineer will solve it for you. ：

/Lenovo/WSI/station/service station/default . aspx？ intcmp=MIDH

For more questions, please consult Lenovo Intelligent Robot:

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If you don't solve your problem, you can spit out your valuable opinions and then ask for manual service.

I look forward to your satisfactory evaluation, thank you for your support to Lenovo, and wish you a happy life!

I look forward to your satisfactory evaluation, thank you for your support to Lenovo, and wish you a happy life!