Engadget - MetroPCS is known for offering 4G LTE smartphones on the cheap, but it's going for a record today. The Activa 4G isn't just Huawei's first LTE smartphone in the US, it's temporarily the least expensive LTE phone in the country at $149 contract-free for a "limited time."
Cnet: The Huawei Activa 4G has LTE support, a decent camera with a dedicated camera shutter button, and sells for a good price for a prepaid handset.