How To Answer Your Calls From Another Person's Phone if Your Battery Is Low Or Your Phone Is Off

Before you totally run out of battery dial **21* phone number of the person you want to receive your calls from # send.

From then, if somebody call you it will ring on the person's phone.
You can cancel it anytime from your own SIM card by dialing ##21# and send. Remember if you don't have battery on your phone at all, you can also remove your SIM card and put it into another person's phone then put the code stated above {**21*} in any case remember to dial ##21# from your own SIM to cancel.