Cleaning a phone with anything containing isopropyl alcohol will destroy your oleophobic coating ! Only use a dry cloth, or in extreme circumstances a lightly moist cloth.
#9 it's not true in LCD screens. Lowering brightness can save battery but displaying black color on LCD drain little more power then white color. It can be true on CRT monitors and LED displays.
You should keep the screen-rotate function disabled and only use it when necessary. Leaving it turned on uses a special sensor called accelerometer which drains a lot of your battery charge.
Cleaning a phone with anything containing isopropyl alcohol will destroy your oleophobic coating ! Only use a dry cloth, or in extreme circumstances a lightly moist cloth.
#9 it's not true in LCD screens. Lowering brightness can save battery but displaying black color on LCD drain little more power then white color. It can be true on CRT monitors and LED displays.
Only use a dry cloth, or in extreme circumstances a lightly moist cloth.