My S2's current firmware is "PDA:KF4 / PHONE:KF2 / CSC:KF1 (H3G)" and KIES is offering me the latest version, but I'm waiting for ICS to be released as I can't be bothered to re-install all apps, etc.
Until it's relased, I need to troubleshoot my exisitng issue... often I would find I will "lose" 3G data - can't sync my emails, can't connect to webpages, etc, even that the "H" and also "H+" logo comes up (with full bars), there will be no data activity. If I enable the Flight Mode then turn it off, it works again.
Until the point where I go from one location to another location, i.e. driving or walking to the city, it lose data access again.
I am with Three network and I don't think it's their network (otherwise we'd see widespread reports about it) so it must be my phone/firmware/ROM.
Is anyone seeing the same issue as me? Or it's just me?