4. Enable airplane mode at poor cellular service
Your iphone will allow more power flow to the antenna for staying connected to receive and take calls and enable data services when there’s low signal. This is one of the top conditions where your phone battery is more like to drain in a flash. So it is important that you notice when your phone indicates “no signal” or only one bar. If it’s not essential to keep your phone active for calls than saving your battery, make sure that you have enabled the airplane mode.
