iphone 6, iOS 9.2.1 , unresponsive touch screen
Im using iPhone 6, 16gb , running on ios 9.2.1. Ever since running on this iOS my phone is super Lagging. Even typing is slow and lag. touch screen is sometimes unresponsive. i have to use the power switch to exit ... And by doing that a few times only slightly solved abit of the lag. I have master reset and erase all settings to a new iPhone. But the problem still persist. can anyone help? Or anyone related to this problem?
iPhone 6s, iOS 9.2.1