Last night my iPhone 7 was at 90% charge. This morning I woke up and it was a 40%. My phone was turned off all night and wasn't used at all. What
after reaching 100% charge and remaining plugged in, when does iPhone 13 Pro start using power from the battery itself? | MacRumors Forums
![My friend's sister has used her iPhone 7 for 8 years. She never replace her battery because the concept of replacing batteries is strange to her. Why is her battery health percentage My friend's sister has used her iPhone 7 for 8 years. She never replace her battery because the concept of replacing batteries is strange to her. Why is her battery health percentage](https://preview.redd.it/my-friends-sister-has-used-her-iphone-7-for-8-years-she-v0-3t4pbhqgpow91.jpg?auto=webp&s=3914190d2eca08976c4050d42d16c1068b9b547c)