Common symptoms: Many mobile device problems have simple solutions that are really easy to diagnose and the repair is just as simple. When you encounter display problem on a mobile device diagnosis is usually simple the repair is another matter.
Dim display: In smartphones you should check the brightness settings to ensure that they have not been inadvertently changed. Many android devices allows to choose between manual settings of brightness and auto brightness.
Intermittent wireless: Almost all mobile devices include an internal wireless card. This is convenient, but it can be susceptible to interference between the device and the access point or cell tower. You can reduce the number of items blocking the signal between the two devices.
No wireless connectivity:When there is no wireless connectivity, it is usually because of one of two things.