While Samsung may be infamous for its Galaxy Note 7 exploding battery, Apple iPhone is notorious for its bending issue and ‘touch disease’. This ‘touch disease’ mostly affects the iPhone 6 and 6 Plus models. This occurrence is due to a design flaw that unfortunately affected many iPhone customers.
The Apple iPhone ‘touch disease’ is a term that refers to the phone’s touch controller damage caused by physical stress which can occur over time even with standard, regular use. The iPhone 6 and 6 Plus are known to be slightly flexible, and flexing forces can stress the internal components. As an example, sitting down with the iPhone in your pocket can cause pressure which flexes it without you consciously realising it. While this does not permanently deform your phone, it can cause the touch controller to detach and lose contact with the primary logic board.
In both models of iPhone 6, the touch controller chips connect to the logic board through an array of solder balls. As time passes, these solder balls can crack and start losing contact with the board as the phone flexes due to stress and pressure from daily use. It occurs almost whenever you sit down with the phone in your pocket.
When this damage occurs, you would not be able to use your phone. You might still be able to talk to Siri, but other than that, most of your iPhone’s functionality would be inaccessible. When your phone is affected by this disease, you will usually see a flickering grey bar at the top part of your phone screen. Another symptom of this disease is that your screen no longer responds when you touch it. Any touch, including continuous taps or pressing with pressure do not work.
The iPhone 6 Plus is more susceptible to this issue compared to the smaller variant. As this model has the same aluminium casing thickness as the smaller variant even though it is larger, it puts even more stress on its touch controller.
If you encounter this touch disease, do not attempt to fix it because this problem goes beyond the screen. Replacing the touchscreen usually does not fix the problem. If you just change the touchscreen, do not be surprised if the grey bar still shows up on the new touchscreen. The reason for this is because there are two touchscreen controller chips on the logic board that might need replacement. When you touch your screen, these two chips translate your finger tap on the screen into information that your phone can utilise. If these chips are not working, no matter how you press or tap your screen, it would not register your touch gesture properly. As Apple repair ‘Geniuses’ do not have the specialised equipment to repair the logic board in-house, they cannot fix this in-house.
The good news is that a mobile phone repair shop can fix this Apple iPhone touch disease with the right advanced tools and knowledge. If you are encountering this touch disease, bring it to a mobile phone repair shop to get it repaired.