If you lose power, turn a laptop on (but don’t unlock the screen) and use your iPhone or Android cable to charge your phone via the USB ports. Most newer laptops can charge a smartphone multiple times. 2. Keep your phone on “Low Power Mode.” This setting will use far less juice.
Does leaving your phone on charge use electricity?
Yes. Once your phone, tablet or any other electronic device that charges in a similar fashion has completed its charge, it will continue to use energy if it remains connected to the power source. Once the phone is fully charged, it will continue to use a small amount of energy even in standby mode.