I have one that works perfectly. Updates come about every 2 months. But I have to say that I was with Salt before and sometimes I didn't hear the person I was talking to, but now with Swisscom I have no problems.

Will hope hard that answers to a question are desired. NFC: Yes Google Services: Yes

Unfortunately, no.

This is indeed a mistake here are the frequencies this phone works on: - 4G/LTE, 3G (WCDMA), 2G (GSM)

Hello Ralf. At least it says here that they have waived 5G: https://www.connect.de/news/oppo-a91-smartphone-quad-kamera-preis-release-3200677.html