I just got a new captivate from ebay. However, when i installed my sim in, the phone does not have 3G display on the status bar. I used this sim on my iphone 3gs before and have no issue to get 3G signal at my house. Is there a setting somewhere that i can turnon or off 3G. I went to setting menu but only see wifi setting. On the iphone i can turn on or off 3G. Thanks I am new to Android. please help.