Chosen Solution
Anyone else having sporadic touch issues after screen replacement on iPhone 7 Plus? We have tried several (highest quality available) from different vendors and still have issues.
Is this phone on iOS 11? There have been numerous reports of Touch failures on the iPhone 6S and to a limited extent, on the iPhone 7. This mainly affects aftermarket screens, not true Apple original or original/OEM quality replacement. I wrote a blog post summarizing this situation as it is steadily evolving. You check my profile for a link to the post.