hi fellow Gem owners!! i just recently got mine and i cant seem to get my 3G network working. i had a htc desire before and 3G works fine on it, but when i switched the sim card over to Galaxy i only get 2G signal. there is no option for me to turn on the cellular data on. my mobile network settings only have data roaming, access point names, network mode, and network operators. i got my phone from taiwan and i have hong kong cellular plan, does that matter? thanks guys.
Try this, Menu>settings>wireless and network>mobile networks>network operators.
Hopefully that will get it working.