Although I love ultrasnow very much for letting me use my iPhone freely in any country. I cant get over the fact that for some reason it seems to be very moody with me sometimes it works n sometimes it doesnt. I have an iPhone 4 V.4.0.2 with fW 1.59.00. I used limerain to jailbreak it n ulrasnow 1.2 to unlock it. I have put the new sim and gave me a couple of errors. I rebooted my phone n it started working for a good 20 hours. Out of the blu I lost service n I had to restart my phone about 10 times to get the carrier signal again. It keeps doing that randomly during the day and I kinda figured out a way to fix it by getting the sim card error first by airplane mode then rebooting it. THat usually does the trick but its driving me crazy cuz even that usually takes a couple of tries too. So if anyone can PLEASE help me. THANKS
Why don't you upgrade to newer version firmware, google the net how to preserve baseband for unlock before upgrade. Grab your 4.2 SHSH before it too late.
I think it's weird too. Sometimes it picks up and sometimes it has no bars. Might just be something to deal with. I also have to reboot to get it to come back. I was on 4.2.1 1.59.00 before I sold it.
The frequency is a lot but I wouldn't say it is the phone. Could be firmware, or whatever. The two iPhone 4's I just sold did the same thing. They just didn't do it like 10 times a day.