Here are a few tips to protect your touch screen phone from damage:
 Avoid placing it in your front or back pocket.
 Avoid exposure to direct sunlight; it will damage the quality of the LCD.
 Use a screen protector or a scratch-resistant plastic on the phone screen.
 Use your index finger while working on the screen
 Do not use nails to wipe the screen; it will lead to scratched screens.
 Use a soft tissue or a clean cloth to wipe the screen.
 Do not put too much pressure on the screen, just tap the screen naturally.
 Keep your cellphone away from objects that contain a magnetic field such as radios, televisions, etc.