CERTIFIED DEVICE DETAILS
Below are all of the certified versions of this device.
| Manufacturer: | Microsoft |
| Model Name/Number: | 2720a-2b/RM-520 |
| Technologies and Bands: | (2G) GSM: 850 MHz 1900 MHz |
| Certification Date | Hardware Version | Software Version |
|---|---|---|
| 2010-03-23 | 0302, 0402, 0404 | 09.85 |
| 2009-12-07 | 0302, 0402, 0404 | 09.55 |
| 2009-11-09 | 0302,0402,0404 | 08.64 |
| 2009-10-15 | 0302, 0402, 0404 | 08.71 |
| 2009-09-22 | 0302, 0402, 0404 | 08.42 |
| 2009-08-07 | 0302,0402,0404 | 08.62 |
| 2009-07-28 | 0302, 0402, 0404 | 08.20 |
| 2009-07-08 | 0302 | bf8.01 |
The PTCRB certification program provides confidence that devices conform with global standards and perform optimally on mobile wireless networks.
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