Cellphone owners in the UK could upgrade their on-contract handset as often as every six months, retailer Phones 4U have promised, with a new double agreement system that splits device subsidy from service. Trialled since May last year, Phones 4 U JUMP - "Just Upgrade My Phone" - is now rolling out across the UK; subscribers sign up to a double contract that includes a talk/text/data package with a carrier and a separate phone contract with the retailer itself, along with various trade-in options for switching device before the service agreement is up.
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