So i recently came back to india and i bought an iphone 3g before i left. The firmware version is 4.2.1. I followed the Redsn0w jailbreak then ultrasn0w unlock. But the problem is whenever i put in my sim card ( which is !dea sim BTW) the iphone just keeps turning on and off and wont connect. What is the problem? is there another unlock i can possibly do after restoring. Any help would be appreciated, Thanks!