Fairphone 2: Crazy touch inputs (touchscreen issue) - workaround (for some): increase touch & hold delay

That’s this issue:

Both issues indicate that the screen is defect if cleaning the connectors didn’t help.

Before you contact support go to Settings > Maintainence > Free Drawing and draw on every part of the screen you can reach. Make a screenshot and send it to support.
You can contact them right here:

https://fairphone.zendesk.com/hc/en-us/