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24 Seven national roaming SIM compatible with Xperia X and XA
Jump SIM, which runs on EE, O2 and Vodafone, switches to the next available network when signal is lost
Kazam targeting taxi industry with handset and SIM bundle
Kazam has teamed up with roaming SIM specialists 24 Seven Communications for the package
Galaxy S III is biggest selling handset of 2012 at Phones 4U
Latest high-end Galaxy handset from Samsung becomes retailer’s best selling of the year, based on pre-orders and first day sales