We have seen a whole lot of LG Optimus 3D hardware show up in FCC documentation. It’s showed its face as the P920, P920H, P925 (the Thrill 4G on AT&T), and now it’s back as the P929, apparently sporting compatibility with T-Mobile’s 4G band.

What’s odd about this particular model, is that while it has the 1700MHz band that we’d expect for T-Mobile, there’s also support for 850MHz, used in the States by AT&T along with 1900MHz; you just don’t see it by itself, nor alongside 1700MHz like this. That could mean that, despite the FCC certification, this model may not be destined for the US, after all. Canada, perhaps? South America?

The model number pops up on the internet all over the place, usually tied to phone cases or referenced alongside the other Optimus 3D models we’re familiar with, but there’s no indication that we’ve been able to come across that points to just where this phone is intended for release.

Another oddity: while the P929 supports WCDMA as well as HSPA on 1700MHz, just like we’d expect, the 850MHz band specifically handles only WCDMA 3G speeds – no HSPA. Any guesses as to what LG’s up to with this model?

Source: FCC