One of the very common issues in the iPhone 6 Plus and sometimes the iPhone 6 is touch disease.
Some of the symptoms are:
Unresponsive touch screen.
Grey bars at the top of the screen.
Touch screen freezing.
Having to bend the phone for the touch screen to work.
This fault is caused by poor design and flexion of the motherboard. On the iPhone 6 Plus the housing of the phone is weak and can bend easily, every movement in the housing passes through to the motherboard and over time traces in the motherboard break. In this instance the M1 pad under the touch ic in the phone breaks away from its track and causes touch disease, when the phone is bent in a certain way the connection is restored and this is why the issue can be intermittent.
At Pratts pods we are able to remove the touch ic, run a jumper to repair the broken trace and restore the connection to the M1 pad, then reball the ic and re attach it resolving the issue and restoring touch functionality.
This repair is future proof as the jumper put in place is stronger and less vulnerable than the original trace, meaning further flexion of the motherboard will not cause the connection to break again.
We repair a lot of this fault, along with other common issues such as audio ic repair on the iPhone 7, Tristar replacements for charging issues and baseband repairs for no service or searching faults. Below are some photos of some recent iPhone touch disease repairs.