CERTIFIED DEVICE DETAILS
Below are all of the certified versions of this device.
| Manufacturer: | Microsoft |
| Model Name/Number: | RM-381 / 6750-1b |
| Technologies and Bands: | (3G) UMTS FDD: Band I Band II Band V (2G) GSM: 850 MHz 900 MHz 1800 MHz 1900 MHz |
| Certification Date | Hardware Version | Software Version |
|---|---|---|
| 2010-03-31 | 0500, 1000, 1001 | sy4.99 |
| 2010-01-13 | 0500, 1000, 1001 | sy4.97 |
| 2009-10-01 | 0500, 1000 | 4.96 |
| 2009-09-25 | 0500, 1000 | 4.89 |
| 2009-07-31 | 0500, 1000 | sy4.89 |
| 2009-07-06 | 0400 | sy4.74 |
The PTCRB certification program provides confidence that devices conform with global standards and perform optimally on mobile wireless networks.
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