The 22-year-old, from Renfrewshire, had been competing in the cross-country phase of the prestigious four-star event aboard her grey gelding McFly.

BBC: Scottish rider injured at Burghley Horse Trials

Sprint, which has just begun to build out its 4G LTE service, offers 4G today on a competing technology known as WiMax that it will phase out.

WSJ: Fast Phones, Dead Batteries

Given the current gold rush to offer mobile payment services, promises like these seem likely to attract at least some developers, particularly since competing services remain far from the developer recruitment phase.

FORBES: Sprint Recruiting 'Mobile Wallet' Developers To Outrun Rivals