Sometimes FCC filings are rife with details. T-Mobile and ZTE aren't playing that game right now: a device has shown up at the US agency bearing only the T-Mobile Aspect name and a ZTE F555 model number. That already tells us that it's likely to have 1,700MHz 3G inside, but the rest is left to our imaginings. It could be anything from a humdrum basic feature phone to a hotspot or future smartphone. We're hoping it's something as sleek as the upcoming Athena, but it could be