CERTIFIED DEVICE DETAILS
Below are all of the certified versions of this device.
| Manufacturer: | Microsoft |
| Model Name/Number: | RM-289/6555b |
| Technologies and Bands: | (3G) UMTS FDD: Band II Band V (2G) GSM: 850 MHz 900 MHz 1800 MHz 1900 MHz |
| Certification Date | Hardware Version | Software Version |
|---|---|---|
| 2009-08-31 | 5000, 5001, 5002, 5003, 5004, 5005. | 03.46 |
| 2008-11-19 | 5000, 5001, 5002, 5003, 5004, 5005. | 3.45 |
| 2008-08-15 | 5000, 5001, 5002, 5003, 5004, 5005. | 3.44 |
| 2007-12-04 | 5000, 5001, 5002, 5003, 5004, 5005. | 3.43 (SV 05) |
| 2007-09-28 | 5000, 5001, 5002, 5003, 5004, 5005. | 3.31 (SV 03) |
| 2007-08-29 | 5000 | 3.31 (SV 03) |
The PTCRB certification program provides confidence that devices conform with global standards and perform optimally on mobile wireless networks.
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