Fix iPhone 15/16 Not Charging Issue by Replacing U2 SN2012027 EEPROM IC

How to effectively restore iPhone 15/16 not charging or not touching failure? Phonefix summarizes a troubleshooting guide for iPhone 15-16 Pro Max charging or touch problems, covering both simple software fixes and professional iPhone parts replacement (SN2012027 U2 charging IC and 8N EEPROM IC).

Before diving into hardware repairs that require professional phone repair skills and phone repair tools, we can try a few simple iPhone software troubleshooting methods. Because many charging problems can be solved with simple software methods.

1. Update iOS. Outdated software can cause compatibility issues with charging accessories. We ensure your iPhone is running the latest version of iOS, as Apple frequently releases updates to fix bugs.
2. Reset Settings. Incorrect settings can interfere with charging. We perform a soft reset or reset all settings to default, which often resolves the issue without losing your data.
3. Check for Background Apps. Certain apps running in the background can drain the battery faster than it charges. We identify and close these apps to improve charging efficiency.
4. Diagnose with Apple Diagnostics. Using Apple’s proprietary diagnostic tools, we check for any software-related charging errors and address them accordingly.
5. Check the charging port/charging cable/adapter. Clean the iPhone charging port with a Phone Cleaning Kit and try a different charging cable or adapter.



If the above software fixes do not resolve the issue, then we need to check for hardware issues. The most common cause of charging failure in the iPhone 15/16 series is a damaged U2 charging IC.

Phonefix will focus on explaining the hardware solution for the iPhone 15/16 series charging and touch failure. Due to the special circuit trend of the iPhone 15/16 series motherboard, the iPhone 15/16 failure to charge may be caused by a faulty charger or a faulty U2 chip.



If your iPhone 15/16 is facing the problem of not touching and not charging, it can basically be fixed by replacing the iPhone U2 charging chip. However, if the original iPhone EEPROM chip data has been lost, then we need to replace both the U2 charging chip and the EEPROM chip with the written data.

The simple summary is that if the original iPhone 8N EEPROM data is not lost, the iPhone 15/16 series charging failure can be fixed by replacing the U2 chip alone without flashing. If the original iPhone 8N EEPROM chip data data is lost, the 8N EEPROM chip with the software programmed and U2 charging IC needs to be replaced. However, Phonefix understands that without a professional programmer, we cannot check whether the EEPROM chip data is lost. Therefore, mobile phone repair personnel often replace the entire set directly.



According to the above statement, it is very important to get a set of fully functional iPhone charging chip kits to fix iPhone 15/16 charging and touch failure. Fortunately, we can get this set of iPhone charging IC at diyfixtool.com.

After we get the SN2012027 U2 charging IC and 8N EEPROM IC, we can start fixing iPhone charging problems. Disassemble the iPhone via Phone opening tools, take off the iPhone motherboard, and fix it via a motherboard holder fixture, and put it under a Trinocular Stereo Microscope. Use a hot air gun and tweezers to remove the iPhone U2 and EEPROM charging IC, and then install the new functional U2 charging IC and 8N EEPROM IC to the right position on the iPhone motherboard. Finally, we tested the charging function of the iPhone and found that all functions have returned to normal. Then we can assemble the iPhone and use it normally.



The China Phonefix team sincerely hopes that this guide will be helpful to daily iPhone repair services, mobile phone repair shops or mobile phone repair enthusiasts. The tools and mobile phone accessories used in the phone repair process are all available on our official website diyfixtool.com, all with quality assurance and after-sales service. These mobile phone repair tools and high-quality mobile phone accessories can greatly improve the efficiency and success rate of mobile phone repairs. The Phonefix team will also be infinitely grateful if you have good ideas about mobile phone repairs to share.