I'm using the same T-Mobile SIM that I used with my 650: a Gemplus, with the following numbers on the front: 8901, 2603, 9000, 3350 and 999. I've never experienced any of the problems you describe.
_______ Bill > -----Original Message----- > From: [email protected] [mailto:[EMAIL PROTECTED] On > Behalf Of [EMAIL PROTECTED] > Sent: Sunday, September 16, 2007 12:19 PM > To: [email protected] > Subject: [Treo] 3G GSM system? > > I received a new 680 unlocked GSM phone last week. It worked > fine for about > 24 hours. Then it started randomly rebooting spontaneously. > When it wasn't doing that it wouldn't always connect to the > T-Mobile system. When it wasn't doing that it would drop > calls or reboot mid-call. > > Palm Corporate Customer Support said all of these problems > were caused by the SIM. They said the phone requires a 3G > SIM. T-Mobile doesn't operate a 3G system. They gave me the > most up-to-date SIM they have and for the following 3 days > the phone has behaved as it should. > > Palm Corporate Customer Support even told me I should return > the phone for credit if I don't get a 3G SIM. Yet I can't > find one notation that this as a requirement for successful > operation of the 680 in any of Palm's sales or support info. > on their website or the website of the Palm Store. > > Is anyone familiar with this? > -- > Larry Hess
