Can a jailbroken iphone get service?

I've been getting a no service SIM card failure error. Does this have anything to do with my jailbroken phone?

Iphone 3gs
sn0wbreeze for iOS 6.1.2 (hacktivated)

The best way to determine if the jailbreak is causing the issue would be to do a factory reset to your iPhone through iTunes. If your iPhone is already jailbroken, download a free app through Cydia called xBackup that will allow you to back up your repositories and Cydia apps before doing the factory reset. This way, you can put all of your information right back on your phone after you do the factory reset (if you still want your iPhone to be jailbroken) and re-jailbreak your iPhone. You will need to note the save location of the backup file and copy it to a location other than your iPhone. Open iTunes on your computer and plug your iPhone into your computer. When iTunes detects the phone, click on the tab for the phone and scroll down to "Restore iPhone". Please make sure all of the contents of your phone are backed up through iTunes or iCloud before proceeding with the restore. If your phone works after the restore has been completed and all of your regular (non-Cydia) apps and files have been loaded back onto your phone, you will know that the issue is associated with either the jailbreak or a Cydia tweak/application.

I've had no problems in the past with jailbroken iPhones & service.

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