So I have heard this question asked before, but not answered...I think. Nonetheless, I bought my trusty Droid on Friday, November 6th (fortunately it was not a dud) and the following Sunday left for Thailand for two weeks and am now in Vietnam. I have been perplexed by the signal fluctuation and the origination of the signal. Thailand currently only uses 2G with 3G coming next year. I actually received a few calls...which I did not answer...but not wanting to kill my battery I was racking my brain on how to turn off 3G while still using WIFI. Well if anyone is interested: From Home Screen goto Settings> Wireless and Networks> Turn on Airplane Mode (this will disable wifi as well)> Turn Wifi back on with no cell signal For those of you jumping the gun, I am totally aware that the wifi already takes priority over the 3G signal...this is for overseas use or for areas in which wifi can be used and signal is weak (or not compatible) and may drain the battery.