The latest affordable Lumia 640 LTEis now available in the US, but prospect buyers must note that they cannot install Windows 10 preview as it was confirmed by Microsoft.
According to Technology Tell, ahead of Lumia 640 LTE with dual-SIM support and LTE connectivity release to carriers in the US an unlock version of the phones are now available on Expansys.
The black variant of the Lumia 640 costs around $220, and the orange and cyan are priced at $245. It is also expected to be available on prepaid plans for $99.
Specs wise, the Lumia 640 offers a 5.0inch HD LCD display protected by Corning Gorilla Glass 3 and available in black or orange colour options. It is powered by a quad-core Qualcomm Snapdragon 400 SoC each core clocked at 1.2 GHz coupled with 1GB RAM.
The Lumia 640 has an 8GB of expandable storage that can be expanded up to 128GB; sports an 8MP rear camera with LED flash and 1MP front snapper; DLNA support, and 2,500 mAh battery. (via GSM Arena)
GSM Arena added that buyers must check their supported LTE bands "to make sure that the device supports their carrier" before purchasing an unlock version.
Also, prospect buyers must be reminded that devices like the Lumia 640 can't download Windows 10 preview due to some issues of its Windows 8.1 OS build, Windows Cenrtal reported.
"If your 640 handset is on Windows Phone 8.1 and has an OS version greater than 8.10.15116.125, you will not be able to upgrade to Windows 10 Technical Preview currently," written on Microsoft's forums.
"I know this news is disappointing. This is a temporary, not permanent, situation. Without going into great technical detail, I will summarize and say that if you are on a build greater than the one noted above and update to Windows 10 Technical Preview, your device would not be able to recover back to Windows Phone 8.1 if you were to encounter any device troubles or decide the Preview wasn't to your liking."
