Same issue here in Switzerland. Worst when using two SIM cards. Disabling one helps but still unstable on both LTE and WiFi. Looks like a software issue but probably also linked to the carrier, for example if I have a lot of issues in Switzerland I s...

I agree, it really looks like a software issue. It is not (only) compression, it is as bad with HEIC as with JPG, it is something weird is the postpressing. I am quite surprise considering today importance of the camera quality in purchase decision. ...