The good: cheap, it tethers very nicely. The bad: almost everything else.

I gave my android phone to my son when I decided to try FFOS as my only phone on the ZTE open. The hardware isn't good enough and it often lags. I can live with it since I almost always have my tablet which is wifi only.

My biggest concern is that Mozilla hasn't done a good job of providing an update path. I can live without OTA updates, but I'm not going to spend the time hunting in random websites for builds that have vague instructions to update my phone.