オリジナル投稿者： Ronaldo ,
Did the batteries need activation? Did you calibrate te batteries first? Step 1: No matter what the battery level is, use your iPhone until it shuts down because of no power. It’s up to you if your enable/disable Low Power Mode. Step 2: Plug your device in to a power source and load it without any interruption until it reaches the maximum 100% battery charge. Fact: Make sure that you use and official Apple charger! Step 3: Reset your device by simultaneously pressing and holding the Power and Home buttons. Hold them for a few seconds, even during the appearance of the iOS Shutdown screen.