Chosen Solution
Hello, I have a problem. My 5 c works perfectly then sometimes stop taking certain keys. If I rotate horizontally then I put it vertically, it works, then after a few days the problem occurs again, I tried to mount another original display but the problem sometimes recurs. Not even a tweet in dfu mode solves the problem
Since you tested with a different known good screen, it is now safe to say that your iPhone is suffering from a “touch” disease very common to all iPhones with a soft shell, and to a lesser extent to other iPhones with a hard shell. Just google “touch disease iPhone.” Soft shell iPhones would be: iPhone 5C, iPhone 6, iPhone 6+. The latter two models suffer from it the most. We see and fix a lot of them. Probably the most recurrent repair lately. The repair may be simple if the damage is only on the display circuit, or more complicated if the touch ICs themselves are separating from the board. Either way, it is likely that the problem will increase until the screen becomes completely unresponsive. And either way you will need a microsoldering technician to fix it for you as this is not a DYI type of repair. You need proper microsoldering tools and skill other wise you risk ruining it completely.
