It's actually really good. 4G all in Centurion all the way to PTA east and midrand to the whole kf JHB. Maybe your phone does not support the correct bands but coverage is good. Speed not so much.
Ok that is interesting.
I think my issue might be that that my SIM card is too old, so I will get a new one and test.
I have both SIMs in the phone but can only get 4g on Vodacom.