The NEW ZTE open C - sim-free unlocked to all networks
Update 31/07 The price from ZTE UK has now dropped to £38.99
This is a brand new device from ZTE with the latest qualcomm processor running the latest version of either Firefox OS or Android KitKat.
Android flash tool and firmware for Open C are here: http://ul.to/2o7e10vm
For less than 40 quid you are not going to find a better unlocked smartphone. Moto E/G fanbois please look away.
Specs for those who care:
Fiefox1.3 OS with 1.2GHz Qualcomm Snapdragon 200 MSM8210, Dual core processor
Firefox OS is the free and open source operating system from Mozilla. Its mission is to promote openness, innovation, and opportunity by keeping the power of the Web in your hands.
Display: 4.0”WVGA (480x800Pixel)
Camera: 3 megapixel camera
Network: GSM 900/1800/1900 MHz | WCDMA 900/2100 MHz
Battery: 1400 mAh
Memory: 512MB LPDDR2/3 + 4GB eMMC | MicroSD (Up to 32GB)
Other: GPS with AGPS, WiFi 802.11 b/g/n, Bluetooth 4.0
Can update to Android 4.4 OS. If you are not accustomed to using Firefox OS.
Also available from eBay / Amazon sellers for the same price:http://www.ebay.co.uk/itm/New-Unlocked-ZTE-OPEN-C-Dual-Core-CellPhone-Latest-Firefox-OS-1-3-3G-Smartphone-/351077440090?pt=UK_Mobile_Phones&hash=item51bdd89a5a
If you don't like 3rd party sellers you can now get the device from ZTE UK directly for £38.99 http://www.ebay.co.uk/itm/171301269724