Lumia 520 is now available at CarphoneWarehouse and surprisingly the retailer is offering the device at some of the best deals. The PAYG price is the lowest in UK at £99.95, SIM-Free price also is again the lowest £149.95. Not only this, it is available as Free phone on Monthly plans starting from £7 only. Color availability is Cyan and White. Cyan seems unavailable at other network operators.