AT&T shook up the wireless world yesterday when it announced that it would be purchasing T-Mobile USA for $39 billion in cash and stock.

Today T-Mobile customers are flooding message boards and blogs in hopes of finding out what the merger means for their wireless service. Both companies seem to be slowly trickling out information about how current subscribers will be affected.

So far it doesn't seem like anything drastic is going to happen, but Yahoo! Finance is reporting that in a few years, no 3G T-Mobile phones will work, due to AT&T dropping $8 billion to turn the current T-Mobile 3G network to 4G.

That means customers will need to get an AT&T phone in order to access 3G. However, according to AT&T's head of wireless and consumer services, Ralph de la Vega, they really have nothing to worry about as the process will take several years to complete.

"There's nothing for them to worry about ... it will be done over time, in a way that's good for customers and good for AT&T," he said in an interview.

Sounds to us like it's only good for AT&T. Just sayin'.

[Yahoo! Finance via Slash Gear]