Sony Ericsson W715 mobile on Vodafone with battery. 

Unlock capable Forget the Nokia 3310, if you want to go old Skool with a touch of class look at the W715 slide phone 

See Techradar for full review
 http://www.techradar.com/reviews/phones/mobile-phones/sony-ericsson-w715-588383/review#best-price-article-top

 • 2.4-inch, QVGA 262k-colour display • Wi-Fi and HSPA 3G high-speed connectivity. 
• Up to 8GB memory card capable. 
• Walkman software (including Shake Control), with a 4GB Memory slot 
• Video calling • Support for a variety of online services. 
 • A 3.2-megapixel camera with flash is also built in with Geo tagging. 
• Attractive slider phone. 
 • Brushed aluminium front panel with angular edges, 
 • Rubber-feel back panel, and fine finishing touches.  
• The silver fascia with its low-key gold trim. 
• Excellent audio performance from the Sony music software. 
International shipping available so guided shipping cost and might vary depending on the buyers location.