[japper88]

I think it's all about kick backs. Some important guy at Sprint wanted to hookup his friend's industrial design firm. So he gave him a contract to make a battery cover, which he didn't need to do because HTC already paid bought some Dutch industrial design firm to design battery covers. With some of the money he was paid to make a special "Sprint" battery cover he paid his buddy that hooked him up. Either that or HTC was going to have a bigger speaker and changed their mind at the last minute (someone else posted this idea too). Imagine how thick the TP2 would be with a speaker that big???