Help--"No Service" on 3G

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apologize if has been asked. i'm doing on iphone , don't have internet access.

have original ipad 3g + wi-fi. activate 3g service every , then. when i'm not paying data plan, ipad still shows bars of coverage.

couple of weeks ago, noticed showing no bars , said "no service." though i'm in area strong coverage. when tried activate 3g service last night, can't access network. again, don't have wi-fi am, i've been able activate before same location.

i've tried reset settings, powered on , off, done hard reset, nothing. when reset network, momentarily show 1 bar of coverage, go away before can connect internet.

have idea of problem or can try next? i'm stuck iphone internet next couple of weeks, isn't going cut it.

thanks.

tom

 

sim card died.

 

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