Hi and welcome to the forum.
Your method may be fine now and again but it would seem wise to dismantle and reassemble. It may be loose or it may be tainted contacts which you could clean.
Yes good idea, will do!
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I just have the same problem. I have reassembled the phone 4 times and always it works fine for some weeks and then, it starts again flickering… 
I’m a bit surprised that there is no save connection at the touch module. I’ll try it again with cleaning solution for electronic devices.
Send it back. A smartphone should not have these problems. You are, in my opinion, diffused by the fact hat the Fairphone has een replaceable screen. Great feature, but the connection with the body must be stable. I have returned my Fairphone 3+ and received a new one.
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Yeah for me it has now been some weeks and the problems are not totally eliminated but are so minor that I really don’t care. For my case, there is no need to send it back. But good to hear that this was an option for those who might have a more severe case.
I dropped the phone today, resulting in a flickering screen. Even my fingers were not recognized by the touchscreen any more. I am highly dependent on a phone and started to worry 
Then, as @anon9989719 proposed above, I dismantled the screen, cleaned things a bit (just with a tissue for cleaning my glasses), and put it back together. Now, everything works again. It took me 30 Minutes in total, including reading the instructions to dismantle on ifixit.com
I loved this experience, made me super happy. This repairability of the Fairphone is very innovative. Many heads up to the Fairphone team!! 
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I find it concerning that the FP3, whose screen was designed to fix this kind of widespread issue from the FP2, still has it to an extent.
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Maybe it’s not that comparable, as
a) without a count there is only a small percentage that have this issue
b) there are a lot more FP3 and FP3 manufactured, sold and in circulation
For example 14% of 14% is less than 2%
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In my case, even cleaning solution did not help.
However, I bought usual contact spray and moistened critical surfaces/contacts. I was a bit wondering if this could lead to short-circuit because the contact fluid dried very slowly, but fortunately this did not happen. Now, since around two month, touch screen is working very well, no flickering and very good sensibility and precise when touching it! puh! 
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Hmm! and I only have three to compare 2 x FP3+ and 1 x FP4 amongst three family members and none have the problems you refer to, in fact no problems ??
In my case, in summary in had 4 different issue types within around 2 years (several screen-issues related to moisture and/or flickering, earspeaker defect (probably also related to moisture), charging problems (also here contact problems)). Other FP3-experience: One friend had ghost touches (was finally fixed by a friend of him), another family had flickering problems similar to me on both/two devices; and the fourth person had some issues I don’t know exactly, anyway he sold his phone and bought a different phone. So, none of them had no issues. But nice to read that you know people without any issues occured. Now, in my case I hopefully have fixed everything, and I strongly avoid moisture (even dew in the evening).
Absolutely, though one of my daughters dropped hers FP3+ down the toilet. It took a few days to dry but that was over a year ago and no problem since ~ of course the warranty is void with the red indicators
Damp is an issue and I reside in the south west of the UK which is damp and my home is in a valley 60m from a tidal river. The fruit trees do not like it, they get canker etc. Lots of lichen, moss etc. but somehow I must be taking care of the phone.
But even though I’m OK I wouldn’t recomend an FP to anyone unless Fairtrade is the focus and not the phone
All the best
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I got an email alert about messages in this thread, I thought I’d come back and mention that I haven’t had a single issue for months now. I cleaned and tightened the contact and since then it’s been completely error free. I’ve also regularly gotten the phone wet, using it for music in the shower, and no issues. Just thought it would be nice to have not only the people with problems who speak.
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That’s a bit risky, but if you ensure it’s dry after it may last for years.
However you may notice a red marker if you remove the screen one day to show that it has got damp and that indicator will void the warranty.
Else have fun, keep it as dry as possible, clean it one day maybe, but it’s really good news.
All the best.
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I’m struck by this issue either.
Today my FP3 (no FP3+) fall down and the screen flickered for a few seconds and then the display was black.
I hope after disassembling and cleaning the contacts everything will work again.
Wish me luck…
Welcome to the forum and good luck.
There are a number of other topics referring to similar display failures
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Success!
FP3 is working as before.
Thanks for your wishes, they helped - trust me.
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I have the same flickering issue with my FP3+
It started after I got the phone for 2 months, I didn’t drop it.
The screen sometimes will flicker for a few seconds, and then back to normal.
I can still use it, it’s just that random flickering a few times a week.
I’ll try opening it up and secure the connector.
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Hi and welcome to the forum
The connection is a contact pogo type so there’s no actual connector to fiddle with. Saying that
- Sometimes a pogo pin maay be stuck
- The pins or contacts may be tarnished
- but more likely the screws in that area, there are three, maybe unevenly tightened.
Have fun
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I realised that sometimes the flickering can be caused by slight bending of the phone.
For instance, getting in or out of the phone case. The original case by Fairphone is very rigid, getting the phone out of the case needs to apply some force. My phone can flicker when I’m doing this.