san francisco 2 force close

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http://androidforums.com – Hi guys I'm having issues with a force close, Force close started coming up on a daily basis stopping me from viewing my picture gallery and facebook. Now i turn on my phone and get a message saying the phone was doing a force close, "it is turning my screen to idle and says i have no sim or nthe process com.android.phone has stopped unexpectedly. please try again" phone is saying no sim and no network. I have taken the sim and battery out with no effect. any ideas? Cheers (General)