I can see that this is kind of issue for a long time.
Nevertheless, I bought my first Asus Rog phone 7 (tencent edition) and right from the first day I have issues with unstable 4g. Pretty much it is constantly on H and H+, and phone will sometimes appear as 4g (rarely). Even though I get constant rock solid 4g connection on my old phone. Basically I have tried everything I found on this forum, but nothing helped me. Open to all suggestions, if any..
Tencent version support the following 4G frequencies:
FDD-LTE Band 1, 2, 3, 4, 5, 7, 8, 18, 19, 26, 28
TD-LTE Band 34, 38, 39, 40, 41, 42, 48
If you live in a country where they use other frequencies youll have poor coverage. If you live in the EU, the absense of band 20 will lower your coverage considerably as it's by far the most common frequency used and US is probably even worse.