![Amazon.com: Microsoft Lumia 640 XL 8GB Quad-Core Windows 8.1 Single Sim Smartphone (GSM Unlocked) - Black Amazon.com: Microsoft Lumia 640 XL 8GB Quad-Core Windows 8.1 Single Sim Smartphone (GSM Unlocked) - Black](https://m.media-amazon.com/images/I/81L88lwctjL.jpg)
Amazon.com: Microsoft Lumia 640 XL 8GB Quad-Core Windows 8.1 Single Sim Smartphone (GSM Unlocked) - Black
Goldtech Electronics - The Nokia Lumia 535 uses the Windows 8.1 operating system (but you can upgrade this to Windows 10), a fast quad-core 1.2 GHz processor, comes with a 5 MP
![Update: Not GDR2] Windows Phone 8.1 Update 2 now available for the Microsoft Lumia 535 - MSPoweruser Update: Not GDR2] Windows Phone 8.1 Update 2 now available for the Microsoft Lumia 535 - MSPoweruser](http://mspoweruser.com/wp-content/uploads/2015/01/lumia-535-feat.jpg)