Fast Fix an Unresponsive Touch Screen on iPhone - ViP Pro Shop Team

When your iPhone freezes incessantly, we can understand the inconvenience caused to you. Other than your work getting disrupted, it can be very annoying to fix it if iPhone freezes. Not many people know about the iPhone 6 freezing problem and wonder why it happens. It is difficult to pin point a single reason behind the problem, but usually, a minor software crash makes an iPhone frozen. Also, if you're using an outdated iOS version, your iPhone freezes and stops responding. Similarly, certain Apps, not compatible with the device’s software can cause the iPhone 6 freezing problem. Now, ViP Pro Shop Team are going to address this problem, showing you a few ways to fix it. 



Fix The iPhone Frozen Screen Issue With Logic board Repair Solution:

1. Power on, the screen is stuck off and power button responses slowly.




2. Disassemble the phone, detach the display assembly. Replace with a new display assembly.



3. Turn on the phone and test. The screen is still stuck off.



4. Enter into record mode, the record icon is in nonfunction state. Screen replacing doesn’t help on the stuck issue, we can tell that there is a problem with the audio circuit. Move on to logic board repairing.



5. Take out the logic board and tear off the shield sticker.



6. Apply some BGA paste flux around the audio IC and blow it with hot air gun at 300 degrees. Then take down the audio IC.



7. Dip some rosin with soldering iron to clean the tins. Then dip some rosin with Goot wick for secondary cleaning. After that, clean again with PCB cleaner.



8. Test resistance value of pin C12 (U3101 audio IC). The resistance value is swinging.



9. Roll out the maintenance drawing for reference. Locate the signal of pin C12: 12S-AP-TO-CODEC-MCLK. The signal was connected with CPU via resistor R1103.



10. Scrape the insulation varnish off the copper wire connecting pin C12 and resistor R1103. Solder tins and then solder the 0.02mm copper wire.



11. Apply some UV curable solder mast to the soldered copper wire and put the logic board under the UV dryer lamp for 15 minutes.



12. Reball the audio IC with BGA reballing stencil.



13. Apply some BGA paste flux to the bonding pad. Then align the audio IC to the right place and blow it with hot air gun at 280 degrees.



14. Once the logic board is cooling enough, clean it with PCB cleaner.



15. Assemble the phone screen test.



16. Touch function and record function back to normal.



Tips: For more details on iPhone Frozen Screen Repair guide, you can order automatic at www.vipprogrammer.com. Hoping you can benefit form it, all of these phone repair tools, and you can find it.


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