I have an unlocked iPhone with an O2 pay-as-you-go SIM card, and I just wanted to get an idea of what's actually disabled/doesn't work in terms of the core features, and the technical reasons as to why.
For example, I can't get a location based app to find my location on my iPhone - Google Maps, LocateMe, a simple app I threw together that just returns coordinates etc. so I presume this means that "GPS" (or it's 2G location calculator equivalent) is disabled. However, if it grabs this on the 2G iPhone based on cell towers/Wi-Fi, why doesn't it work? It's got a signal and I can use it as a phone, as well as through Wi-Fi, so surely it should just be able to calculate it's position the same?
Also, what core features are definitely disabled? Does EDGE/GPRS internet not work for any unlocked SIM? Is there no way to make GPS work either?
For example, I can't get a location based app to find my location on my iPhone - Google Maps, LocateMe, a simple app I threw together that just returns coordinates etc. so I presume this means that "GPS" (or it's 2G location calculator equivalent) is disabled. However, if it grabs this on the 2G iPhone based on cell towers/Wi-Fi, why doesn't it work? It's got a signal and I can use it as a phone, as well as through Wi-Fi, so surely it should just be able to calculate it's position the same?
Also, what core features are definitely disabled? Does EDGE/GPRS internet not work for any unlocked SIM? Is there no way to make GPS work either?