Solucija - Where is SIM card in my Treo 600?

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Where is SIM card in my Treo 600?

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My treo 600 doesn't get service at work or other places, or dips in and out. Others get T-mobile service fine. I tried changing the sim card and now the phone itself (to a Blackberry curve) but STILL get no service. Any ideas? Answerbag.com

Can i put a cingular SIM card in a Treo 600? Answerbag.com

CINGULAR PALM TREO-- ""your phone cannot be used with this sim card."? Yahoo! Answers

My phone doesn't read my sim card...but receives and makes calls under my phone number? Yahoo! Answers

I need to pur. a pay as you go SIM card that will work on an unlocked GSM phone purchased in the US (Treo 600) Yahoo! Answers