Durban to sux .cell C still suxs in the Western Cape. Bad Signal and dropped calls. JHB is always get the best of the best and everywhere else gets the crap.
I live here in the PT of A, And you are quite right. Signal here sucks. I work in the CBD, in PTA CBD i have absolutely no LTE/3GIt's the complete opposite. In Cape Town I have zero issues but when I go to PTA it can barely hold a connection.