CERTIFIED DEVICE DETAILS
Below are all of the certified versions of this device.
| Manufacturer: | Microsoft |
| Model Name/Number: | 311 (RM-714) |
| Technologies and Bands: | (3G) UMTS FDD: Band I Band II Band IV Band V Band VIII (2G) GSM: 850 MHz 900 MHz 1800 MHz 1900 MHz |
| Certification Date | Hardware Version | Software Version |
|---|---|---|
| 2013-05-29 | 0420, 0621, 0710 | 07.36 |
| 2012-10-31 | 0710 | 03.90 |
| 2012-10-30 | 0420, 0621 | 03.81 |
| 2012-10-30 | 0420, 0621 | 05.92 |
| 2012-06-28 | 0420, 0621 | hwi3.42 |
The PTCRB certification program provides confidence that devices conform with global standards and perform optimally on mobile wireless networks.
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