If you have replaced the battery on your iPhone XS, 11, or 12 series , you may have encountered a pop-up message that says “Important Battery Message.” This is due to Apple’s encryption of the
Apple’s battery but there is a solution .
In this guide, Phonefix will provide step-by-step instructions on how to remove this message and replace the battery on each of these phone models.
iPhone XS SolutionDisassemble the phone using a Pentalobe screwdriver and remove the screws.Soften the adhesive securing the battery in place with an iOpener or heat gun.Gently pry up the battery using a plastic card or pry tool.Carefully detach the BMS board from the original battery by desoldering it with a soldering iron.Align the BMS board with the new battery cell and use a Spot Welder to spot weld the board to the new Smartphone battery.
Cover the exposed solder joints with electric tape.Recalibrate cycle times and battery efficiency with a AIXUN P2408S Power Supply and Qianli Battery Data Corrector.Install the new battery and check the battery health information in “Settings.”iPhone 11/12 Series SolutionUse a Pentalobe screwdriver to remove the screws and lift the display assembly to access the battery connector.
Soften the adhesive securing the battery in place with an iOpener or heat gun.Gently pry up the battery using a plastic card or pry tool.Disconnect the battery connector from the logic board and remove the original battery from the phone.Carefully detach the BMS board from the original battery using a soldering iron.Align the BMS board with the new battery cell and use a soldering iron to attach it to the new battery cell.Cover the exposed solder joints with electric tape.Install a specialized PCB board to read the data and connect the battery to a programmer.Recalibrate cycle times and battery efficiency with a Direct Current Supply and Qianli Battery Data Corrector.
Install the new iPhone 12 battery and check the battery health information in “Settings.”Anonymous alternative charactersMain Difference Between iPhone XS and 11/12 SeriesThe main difference between these phone models is how the battery data is encrypted and stored. For the iPhone XS, it is stored on the iPhone XSbattery itself, while for the 11/12 series, it is stored on the logic board. This requires different methods for transferring the BMS board and recalibrating the battery.
ConclusionBy following these instructions and using the appropriate tools and equipment, you can safely remove the “Important Battery Message” and replace the battery on your iPhone XS, 11, or 12 series. Remember to take caution when handling these delicate components and follow the steps carefully to ensure efficient operation of your phone.
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