The problem becomes worse as the solder connection between the chips and the circuit board increasingly degrade.
"You might notice that the screen is sometimes unresponsive, but it is quick to come back with a hard reset," iFixit details in a blog post. "As the crack deepens into a full separation of the chip-board bond, the periods of no touch function become more frequent."
Initially, the problem can be alleviated by pressing down on the screen or twisting the phones body, but this workout won't work beyond a certain point and a permanent solution is yet unavailable.
"If the issue is as widespread as repair pros suspect, then Apple should start offering customers solutions instead of excuses. And they need to do it soon," iFixit's blog post reads.
Sources & Recommended Reading:
A Design Defect Is Breaking a Ton of iPhone 6 Pluses: ifixit.org (+Pic Source)