5.Forgot your charger at home? No worries, use this trick.
Then put a key onto the negative side of the battery and it will give your phone enough charging to make an emergency call.
6.If someone ever ties you up then clench your fists really tight. It will allow the muscles of your wrist to expand and it will make them larger when the rope is being tied.
Once the rope is tied and then you relax your hands. You would notice that you would be able to slip through the rope easily.