Blackberry sales double

Revenue jumped 22 per cent to £843m in the third quarter

Research in Motion shipped 3.9 million devices in the third quarter

Third quarter revenue at Blackberry manufacturer Research in Motion rose 22 per cent quarter on quarter to $1.67bn (£843m), doubling the $835m (£422m) recorded in the same period last year.

Profit jumped 64 per cent to $370m (£187m), up from $175m (£89m). The company shipped 3.9 million devices in the quarter, and added 1.65 million new Blackberry subscribers to its user base.