How To Fix iPhone 8 Stuck on Apple Logo - Ultimate guidance

A user turn to our phone Repair personnel for help, He said, "my iPhone 8 Plus stuck on Apple logo when I try to boot it up." What should I do? Today VIP Pro Shop Team will teach you how to solve the Phone 8 Stuck on Apple Logo problem step by step. 




First of all, we can see the iPhone 8 Power on, Apple logo displays normally. Yet the phone gets stuck on Apple logo and can’t boot up completely. Connect the phone to computer and restore via iTunes. Then insert the SIM card and activate the phone. 



We find The Home Button gets unresponsive with returning function and the phone fails to activate completely. You can Disassemble the phone and disconnect the battery. Then remove the display assembly. Measure the power supply voltage of Home Button. The measured voltage value is 3.3V, 1.8V and 2.75V. Normal voltage value for the three sets of voltage.


Check whether the 3D flex cable of the display assembly is damaged or not. The 3D flex cable is in normal status. Detach the Home Button and check whether the home button flex cable is damaged or not. The home button flex cable is in normal status. 

Since Home Button is connected to logic board with flex cable on the display assembly, to further confirm the fault point, replace with a new display assembly. Get the Home Button mounted on the new display assembly. Buckle the new display assembly to the logic board. Then power on. 

We find the phone still gets stuck on Apple logo and can’t boot up completely. So, we can Preliminary judgement – Home button malfunction resulted in iPhone 8 stuck on Apple logo issue.

Remove the display assembly. Switch to diode mode and measure the resistance between J5800 pins and grounding. Normal resistance value. There are obvious repairing marks on J5800 under the microscope. So we can have the connector J5800 replaced for a try. Take out the logic board and attach it to PCB Holder. Stick connectors next to J5800 with high temperature adhesive tape. 



Apply some BGA paste flux to the bonding pad and take down J5800 with Hot Air Gun at 320℃. Then Solder tins with Soldering Iron. Which is helpful to the subsequent soldering process. Clean with PCB Cleaner afterwards. 

May now Get the logic board assembled and connect the battery. Buckle the display assembly and power on. The phone gets access to the activating interface normally. Insert the SIM card and activate the phone. The Home Button gets responsive with returning function. Yet Touch ID failed. So we need to restore again via iTunes. Once finished, activate the phone again. Touch ID back to normal this time. 

With a carrier lock built into the phone, take out the SIM card after the activating process. Only in this way can we move to subsequent function test. Run function test. All going well. Fault cleared. 

Tips: More information about phone repair guides and tools, you can ask help for here.

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