It's old news that AT&T will be pushing MMS out to iPhone users tomorrow, but the carrier has now offered a time frame. According to a post on the company's Facebook page, the service will be activated late morning Pacific Time Friday -- or, early afternoon for those dwelling on the East coast.

At that time, the iPhone's multimedia messaging service will permit the transmission of photos, contacts, audio, and locations. AT&T says you need to update your carrier settings if you want to access these features, which you can do via iTunes. This seems odd, because for the last 10 days or so, customers have been reporting that MMS has been activated on their phones.

Although the carrier is preparing to open the floodgates on MMS, I suspect there is no shortage of bitter AT&T customers. If you're an iPhone user on AT&T's network, will this smooth things over?