Has anyone solved this problem, when a restore does not work? My iPhone 6+ shows static at the top of the screen and will not allow me to access apps. Or, if I am lucky enough to use an app, it will suddenly fail or even switch to a different app. I encountered this problem with another iPhone 6+ that Apple agreed to replace. Now the problem is occurring with this newer phone. Both phones worked perfectly for 5 months before this problem occurred. Apple Support indicated that some of the earlier iPhone 6+ phones had defective chips. If so, why would this problem occur only after months of reliable usage? Suggestions? This has occurred with OS 9.1, as well as previous upgrades.