AboutDebiN Expertise I can answer questions on cellular phones, the physical device, the network, contracts, billing, ordering, porting and what to look for when purchasing cell phones. I am located in the United States. I am an expert on BlackBerrys, Treos, HTC devices and iPhones as well as cellphones and aircards. I have over 15 years of experience in both the wireless and wireline world with the carriers. I have a lot of knowledge regarding the wireless providers - their services, prices and policies, both GSM (AT&T (formerly Cingular) and T-Mobile) and CDMA (Verizon, Sprint/Nextel (iDEN)). I am very familiar with the individual devices and their specifications. I can also answer questions regarding BlackBerrys, iPhones and other PDAs, both Palm-based and Windows-based. I can troubleshoot most any problem someone is having with their cellular device or with the provider.
Experience Over 15 years in the Telecom industry working for the carriers with individuals, small business, medium business and large corporations(Fortune 500)
Education/Credentials Master's in Telecommunications
Question Ihad myat&t bb 8310 unlocked to use with tmobile service now that's the phone is unlock when I put sim card in it works fine for about three hours then it shuts down during,after, or making a call then only the red lcd comes then I pull the battery that work but I remove sim card all together phone comes right back on.... Is this a software problem cause I upgraded the os to 4.5 , or the sim card, or just the phone.
Answer The problem was most likely caused by the upgrade to the software. If you upgraded the device to software designed for T-Mobile, then it is possible that this device cannot handle it. I would strongly recommend going back to the original software and that should resolve your issue. I believe that 4.5 may be fine for the 8900 Curve, but for the 8310, it may be an issue. Where did you get the 4.5 and did it state that it was for the 8310? Let me know and I'm happy to try to help you further. It's definitely not the SIM card, that is for certain. Thanks. DebiN
