Lenovo A670t mobile phone: Why did someone call for SMS service when I didn't actually turn it off?

Dear Lenovo mobile phone users, hello!

I'm sorry for the inconvenience to your mobile phone.

According to the description, if the mobile phone can't get in, you can receive a call restriction reminder from the operator. It is recommended that you try to confirm and operate the following:

1, is it frequent? It may be the problem of unstable signals in the surrounding network, especially during peak hours. This may happen because there are too many users accessing the nearby base station. I suggest you observe and use it.

2. You also try to confirm whether all the contact numbers can't be dialed in, whether some blacklists are set up to intercept, or whether the incoming calls are restricted.

3. It may be a system anomaly caused by some third-party software conflicts. It is recommended that you try to uninstall the recently installed suspicious software for observation and use.

4. It may be that the communication program of the system is abnormal. After trying to back up the important information of the mobile phone, restore the factory settings of the mobile phone to see if it can be solved. (System Settings-Operation under Backup and Reset)

Because we can't see the details of your mobile phone remotely, if the problem still exists, it can't be effectively solved. I suggest you go to the local Lenovo after-sales service center and ask an engineer to help you detect and solve the problem, which may be system file damage or motherboard RF-related abnormality. The specific address can be found in official website:

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

Thank you for your support of Lenovo. I hope the above reply is helpful to you. Wish you a happy life!