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Manufacturer: Microsoft
Model Name/Number: 6650d-1c (RM-400)
Technologies and Bands:
(3G)
UMTS FDD: Band I   Band V  
(2G)
GSM: 850 MHz   900 MHz   1800 MHz   1900 MHz  
Certification DateHardware VersionSoftware Version
2009-05-193000, 4005, 4108, 500503.33
2008-11-183000, 4005, 4108, 500503.13
2008-08-183000, 4005, 4108, 500503.13

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