You Want to Make a Phone Call or Send a Text message or Browse the Web The Problem is you Dont Have any Signal
Some Spots Are Dead Zones Thats Why
However There are Some Cases Where There is Signal And The Phone is Not Showing it For Some Reason
And That is Something That you Would Need to Trouble Shoot and Figure Out Whats Going on
Make Sure The Cover on the Back is on
i Learned This The Hard Way When i Lost My Cover and Had Signal Problems And When i Found it Signal Started to Come Back
up Again
It May Also Be a Bad Sim Card Try Getting a New Sim Card And See if That Fixes the Problem
Check For Phone Updates If There Are Any Phone Updates For your Device Install Them
if your Updates Are Up To Date And you Have your Cover on
Contact your Wireless Carrier For Further Help
They May Be Able to Reset your Network and Reassign you But you Cant Do That From your Phone Tho Only your
Wireless Carrier Can Do It
If That Does not Fix The Problem
your Wireless Carrier Will Tell you What your Options Are on Fixing the Problem