At this stage, the 5G network is mainly the NSA network (non-independent networking), and the voice services are still in the VOLTE call mode on 4G (the status icon will still be displayed on 5G at this time) or fall back to the 3/2G network to conduct ordinary calls.
5G turn on method:
realme UI 5.0 & 4.0 & 3.0: Settings > Mobile network > Select SIM card > Preferred network type > select 5G
realme UI 2.0 & 1.0: Settings > SIM card & mobile data > Preferred network type > select 5G
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5G keeps dropping, 5G is unstable
