I already wrote the support 2 weeks ago, but he has not answered yet. So I try to send my request here again, because the topic is very important to me.
"Dear Fairphone team,
I’ve had a Fairphone 3 for a few months now and I’m very happy with it and I’ve never found anything that I miss about the Fairphone 3. Except now that I have found out that the Fairphone 3 does not support ARCore! Please, please, please make the Fairphone 3 support ARCore! No matter what you do, the Fairphone 3 supports ARCore. Maybe through a system update or if that is not possible please do it through a new module or if it is really necessary then please make sure that the Fairphone 4 ARCore is supported!
With kind regards Jan."