Q: iphone 6 plus behaving erratically

Hi Matkalg,

I'm sorry to hear you are having these issues with your iPhone. If you are having erratic behavior with your touchscreen, including things that appear to select themselves, you may find the information and troubleshooting steps outlined in the following article helpful, up to and including having the phone serviced if necessary:

If the screen on your iPhone, iPad, or iPod touch doesn't respond to touch - Apple Support

Regards