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Manufacturer: Microsoft
Model Name/Number: RM-346 / E71-1
Technologies and Bands:
(3G)
UMTS FDD: Band I  
(2G)
GSM: 850 MHz   900 MHz   1800 MHz   1900 MHz  
Certification DateHardware VersionSoftware Version
2009-02-130508, 0701, 0910, 0911, 0912210.21.005
2008-12-090508, 0701, 0910, 0911200.21.118
2008-11-250508, 0701, 0910200.21.98
2008-10-170508, 0701, 0910110.07.127
2008-09-190508, 0701, 0910110.07.124
2008-09-170508, 0701, 0910102.07.81
2008-09-170508, 0701, 0910101.07.79
2008-08-040508, 0701, 0910100.07.76

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