How to completely discharge iPhone if it randomly turns off?
I have a problem with my battery - the phone randomly turns off. As far as I understand I can try to calibrate it - I have to charge it on 100% and leave on one-two more hours. And then to discharge it until it shuts down. But the problem is that it turns off randomly and doesn't discharge completely.
Is there a way I can do it? My only idea is to remove battery and connect it, for example, to a small bulb, so that the light will be on until the battery will discharge. Will it work or there will be the same problem because of bad calibration?
P.S.
Can't buy a new battery right now.
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