How to save my battery when ur going cross country and have no charge?
Put your phone in low power mode or airplane mode to extend the battery life! If you put it in airplane mode and need to check on a message or something you can always take it out and use your data and then put it back in
If you have periods of time when you don't need to use it, turn it off.
If you are going to use your phone during travelling only for messages and calls,you can use Max.power saving mode and you will be good.