Most US phones do not use SIM cards and for those operators that do (like T-Mobile) your phone will be locked on the US and won’t work. Instead you can borrow, buy or rent an unlocked phone that accepts a SIM card. In South Africa it quite easy and fast to rent a local phone and SIM card in the Johannesburg airport.
Read moreWill a GSM unlocked phone work in Africa?
GSM works in SA as in most other countries worldwide .
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