How to charge iphone 3gs battery manually

 · Optimized Battery Charging is on by default when you set up your iPhone or after updating to iOS 13 or later. To turn off the feature, go to Settings Battery Battery Health Optimized Battery Charging. When Optimized Battery Charging is active, a notification on the Lock screen says when your iPhone will be fully charged.  · After you install a new battery, charge it to % without disconnecting it. Charge using a power outlet: Connect iPhone to a power outlet using the included power to USB cable and power adapter. Charge using PC: Connect iPhone to the computer using the included Lightning to USB cable. A charging icon in the upper-right corner of the screen will display the charging mode. A low battery image will display if the battery is too low and may take up to .

The battery icon in the top-right corner shows the battery level or charging status. When you’re syncing or using iPhone, it may take longer to charge the battery. If iPhone is very low on power, it may display an image of a nearly depleted battery, indicating that it needs to charge for up to 10 minutes before you can use it. Step Slide the logic board towards the dock connector and out of the iPhone. When replacing the logic board after installing battery, connect the camera to the logic board before inserting it into the case. Then make sure to set the top section of the logic board (where the SIM tray is) in place before settling the rest of the board in place. Charge using a power outlet: Connect iPhone to a power outlet using the included power to USB cable and power adapter. Charge using PC: Connect iPhone to the computer using the included Lightning to USB cable. A charging icon in the upper-right corner of the screen will display the charging mode. A low battery image will display if the battery is too low and may take up to 10 minutes before iPhone can be used.

٠٤‏/٠١‏/٢٠١٢ If the battery life in your iPhone 3G or 3GS is getting worse and worse, or it just won't hold a charge, you can easily perform a DIY. ٢٤‏/٠٣‏/٢٠١١ Question about Apple Iphone 2g 3g 3gs 8gb 16gb S. 1 Answer You either have a bad battery or you have a bad charger. Leading up to my battery test I did a full charge cycle (charging to %, then running it down). After that, I did an full 11 hour charge on the phone (to.