Let's get this issue fixed! I know I would be lost without access to the mobile network. Did this start after an application was downloaded? Please power down the device and remove and reinsert the battery.
If the issue persists I would recommend a hard reset. Here's how to accomplish this: http://support.verizonwireless.com/clc/devices/knowledge_base.html?id=44185
Please let me know if the issue persists after the hard reset.
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