<human>: So I'm traveling to Durban to work on some websites with my friend who lives there. I have an iPhone 4 and an old 3G, both from AT&T, and I'm trying to gauge whether or not to unlock the 4/3G and get a local SIM or just have AT&T rub wizard sauce on the 4 and bend me over with intl rates, etc. while I'm there. I'll be using the phone to (occasionally) contact clients in the states and my mate that I'm staying with in Durban, but wanted the 4 to take pictures. Has Reddit had any experience traveling to SA with AT&T? Looking for any helpful tips, thanks!

Give me the gist of the text in a nutshell
<bot>: Going to South Africa, looking for cheapest means of contacting friends in SA and in the states. Also, wizard sauce.