For a while I've been happily using a 3pay SIM in my 3GS and whenever going out of 3 coverage and into Orange backup network, it's continued to connect to GPRS or EDGE. That includes when I carved the SIM into a MicroSIM and placed it into a SIM adaptor (in preparation), it continued to work fine in the 3GS. Placed it into the new iPhone4 and activated the phone yesterday, ever since then it won't connect to data when on 2G - no GPRS (dot) or EDGE (E) symbol, whether choosing Orange (3 without the "(3G)") from the Carrier list or falling into a 2G area and having it fall onto Orange automatically. Take SIM out of iPhone4 place it into any other 3 compatible phone, 3G works, 2G is voice/text only, no data. Found a spare 3 SIM I had and carved that up and placed that in - 2G data works. Not sure how long for. Only explanation I can think of is that when activating the iPhone4 it phoned home to 3 and for whatever policy reasons it barred my account from accessing data over 2G. My dad's is the same. Not happy. 3 customer services, as per, haven't got a clue. Anyone else having this (or not) or have any inside info on what's going on?