Just a bit more detail to explain.
I bought the Fairphone because there is a legal requirement in Sydney to have a mobile phone scanned at Covid test centres, shops and other services one may visit. I have no other need for a smart phone as I have a very old non-smart phone that works well but cannot be scanned. When I opened the box I was able to partially set up the FP3 and download a scanning app and and the display did not flickeror black out and it was responsive to the touch sensor. Several days later I had cause to visit a covid test centre and tried to have my phone scanned and it failed with the screen flickering, blacking out and unresponsive to touch.
That is what I meant when I said it has never worked since I took it out of the box. I didn’t consider that setting up a phone was proof that it worked. Sorry for the confusion. Also I can say that the phone has not been dropped or suffered an impact and the packaging was undamaged when I received the unit.
On returning home I tried switching the power on and off many times over a week or two and each time during the start up there was never any flickering. During the start up I can tap the phone, press and shake it lightly and there is still no flickering. But as soon as the four rotating disks and the Fairphone “Change is in your hands” message disappear the phone starts flickering and switching off, also the touch screen does not respond properly. Given that description would you still think it was a connection problem - for example are there some display connections that are only used after the start up message disappears?
Just occasionally I have been able to enter a password successfuly with great difficulty and to get part way through the Google set up. But I have never been able to complete the setup. I tried a factory reset once. and that didn’t change anything.
I don’t want to breach any warranty (hence my reference to ‘‘out of the box’’) so would prefer not to disassemble, clean and reassemble the display module until Fairphone give me a formal go-ahead. Also I’d be quite worried if a phone that I rely on for critical applications should be so vulnerable that display contacts need to be cleaned from time to time, for example I’ve never had that problem with SD cards.
The suggestion to use a mouse is interesting unfortunately I don’t have one. Would a mouse stop the flickering?
Thanks for your comments and I do appreciate your feedback, Peter