Device
- Why Data Services Cannot Be Used During Roaming?
- Why is the software always flashing back and exiting automatically?
- Why is there no signal when a cell phone is taken out of its pocket? And the cell phone can be restarted normally?
- Why is the playing of music not automatically suspended when a mobile phone calls?
- Why are mobile phones unable to access the network or use data services?
- Why is the speed of searching for a GPS satellite slow?
- Why cannot the screen brightness be adjusted automatically?
- Why the remaining power of the mobile phone is the same, but the remaining usage time is different?