Since the update to Android 7 I haven’t been able to get 4G unless I take out the second sim card.
From the forum I understand that only one sim card can access 4G at a time and the other needs to be set to 2G. But the thing is there is no 2G option, only 3G or 4G.
So I have to choose 4G or Dual sim
Does anyone have any advice please?