Hi,
I bought a new iPhone 4 last month, totally fell in love with it untill there was this problem regarding the apn disappearing. I manually added the apn info and it worked fine for some time but soon after I disabled the mobile data/3g connection and enabled it later I always use to get a msg saying "Could not activate mobile data network" even after it being active( 3g symbol always used to be poped up at the top). Though the apn is filled with a valid data it shows me the same msg over and over again. It some times works on rebooting but the rebooting the handset everytime i want to use the connection sounds very pestering. Please suggest me with somehting to get rid of this problem...