How to Fix An iPhone Stuck on Apple Logo

The iPhone 7 speed is slow, so a user tries to update the IOS to accelerate it, IOS updates VIA iTunes, the iPhone won't start, it stays on the Apple logo, sometimes automatically restart. Connect it to computer and flash it to the latest IOS, computer will prompt flash has been completed, but the iPhone interface, still unable to reach the activation and always show white Apple.



When your iPhone gets stuck at the Apple logo and does not boot up completely, It triggers a mini heart-attack. But it's not all that serious and can be fixed without any difficulty.
So, what could be the reason behind the Apple logo stuck error?  A simple way for you to solve this problem。Let's try them out!

Use DC power supply to test IPhone the power current is stuck at around 150mA. Touch the iPhone home button, it have response, the flash can be completed normally, which means that the iPhone booting condition is normal. Remove all iPhone external accessories, and then test it again, the result is the same.
Press the iPhone power button, after a while, it gets into interface, but the iPhone still runs slowly, and we found that if we clicking on the file or interface related to the sound, the iPhone will get stuck and stop running. As we know, the iPhone 7 audio IC is easy to damage, so we decided to take out the U1301 big audio to check.
Before we use QUICK 861DW  hot air repair desk to remove the iPhone audio IC, we need to protect the other IC (below is the iPhone Nand Flash, which is the iPhone high power IC, and the back is the iPhone baseband CPU).

After removing the large audio IC of the iPhone, we found the problem on the welding disc. The two pins of the chip C12 and J12 have been lost. Observing it in the 7-45x Trinocular Stere
Microscope (FX118), it was found that the jumper wires between C12 and J12 were easily broken. Check the iPhone schematic on WUXINJI Dongle There are two capacitors next to the audio, and two resistors on the side of the audio lead to these two points.

These two points are respectively welded jump wire, the probability of C12 broken line is relatively large. This is the signal from the CPU to the audio. The iPhone big audio IC  does not need to replace the new IC, just resolder the old tin solder and install it.

After the installation, press the iPhone power key, and 20 seconds later, the iPhone enters the IOS interface. Test all the functions on the iPhone, everything is smooth
IF you have any other problems for cell phone repair and related tools, please research on www.vipfixphone.com












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