Please follow these steps to do a Soft Reset of your device:
- Take the back cover of the phone off.
- Take the battery out.
- Take the SIM card and microSD card out (if applicable).
- Wait 10 seconds.
- Put the SIM card and microSD card back in (if applicable).
- Put the battery back in.
- Put the back cover back on.
- Turn the device on.
- Please check if your problem is resolved.