Dish on Wednesday increased its bid to acquire wireless broadband wholesaler Clearwire. The company is now offering $4.40 per share, a 29% premium over Sprint’s proposal, which values the firm at $6.47 billion. Sprint recently raised its offer to $3.40 per share after shareholders had criticized its original proposal of $2.97 per share. Dish, whose offer comes two days before Clearwire shareholders are scheduled to vote on Sprint’s proposal, is also locked in a battle with Japanese company SoftBank to acquire Sprint.