Google Nexus 4

Now this looks like a great phone! Looks like it has a quad core processor, along with 2gig of ram and 8 gig or 16 gig of storage, besides Google Drive. The 8 gig version unlocked is only $299 - probably almost half of most unlocked smartphones cost. It doesn't have LTE capabilities, but since it can run on HSPA +, which looks to be plenty fast at 41Mbs for either AT&T or T-Mobile.