The major problem of mobile phone:

The mobile phone first enemy is the water, If the phone drops in to the water then the mobile phone will be in a dead condition. There are many problems faced my the mobile phones. The major problems are described below:Some of the tips can be used to resolve the problem of.
1. Dead Condition (The Whole mobile should be checked)

2. The Display of the mobile is Invisible (Display Prob or Display Connector Problems)

3. The sim card what u have inserted in the mobile phone does not exist (Sim Card Connector Problem)

4. The light of the mobile phone is not working (Led Problem)

5. Suddenly mobile goes to Switch Off Condition (The Batter Problem (or) Icu Problem)

6. The Battery is full but the mobile is switched off when i was in call, it is an (Battery Problem)

7. The Key pad is not working (It is a keypad prob (or) Some dust particles inside the key pad)

This are all the major problems of the mobile phones.This are all the problems mostly the mobile phone occurs while using or not using.