For those people with qualifying FNB accounts.
I've been using this for the past 3 months now and I've saved a bundle on data costs.
The only requirements are that you are on MTN or Vodacom's networks because those are the networks that FNB Connect uses for their 3G. Also, this will work for both prepaid and contracts.
How did I do it?
I applied for a FNB Connect username and password; you can have this sent to your phone or your email address.
I then set up the FNB Connect APN on my phone and then set my data to connect to this APN, using my FNB Connect username and password. The instructions on how to do this can be found here. It's as simple as that.
As for the quality of service, I get up to HSPA speeds, especially when I'm out and about, and this is when I need it the most. I don't use my network's data at all, saving me a bundle on data costs.
Just thought that I'd share this; use it, don't use it.