Fourth generation iPhone. Repair is straightforward, but the front glass and LCD must be replaced as a unit. GSM / 8, 16, or 32 GB capacity / Model A1332 / Black and White.

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Touch Screen Not working.

My iPhone Touch screen is not working, Very intermittently it will work for few minutes. I have replaced the Entire scree (I swapped from my Known good Iphone), Then also same issue is replicating. after swapping i confirmed that the issue is not with the LCD panel, because it is working in second device. What will be possible cause of this issue, Please help.

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I would start by restoring your phone, unless your phone has any moisture damage, then I would start with that, here is instructions on your teardown, iPhone 4 Teardown, and here is how to treat the parts after teardown, Repairing iPhone Liquid Damage, good luck, If this answer was helpful please remember to mark it accepted

iPhone 4 Image

Guide

iPhone 4 Teardown

Difficulty: Moderate

iPhone Image

Guide

Repairing iPhone Liquid Damage

Difficulty: Difficult1 - 2 hours

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