I know this isnt for everyone, but thought I would post it in case someone wants to tinker or use it for gps tracking/mp3 player/ebook reader
This is a great little phone for 29.99 (regular 70) with no activation required. It has a 3.5 inch capactive touchscreen, 3.2mp camera (no flash though), bluetooth, wifi b/g/n, micro sd card slot, and GPS. I found the device to be very responsive in most aspects...
I bought 2 just to play with and I was impressed with it for a 30 dollar gadget. It's a prepaid service called cricket. I didnt care about the phone portion so I turned airplane mode on then re-enabled wifi and GPS. I installed edmundo gps tracker just because thats what I had already purchased in the past, but Gaia GPS seems to be supported on the device as well.
I did a quick and dirty test to see how well it would do for GPS tracking and was able to run it for an hour (gps on) with only 5% battery usage. Downloading topo maps and only using it occasionally I could see this lasting for days. Edmundo also has a low power setting but I wanted to see how it lasted full on. The GPS had a lock in just a few seconds (maybe 20 or so)
Full specs here: http://pdadb.net/index.php?m=specs&id=3148&c=zte_score_x500
It weighed 4.3 ounces on my scale, has a removable battery so spares can be taken if you need more juice. I bought 2 so I have a spare unit, and an extra battery to carry with me if needed (battery alone is .95 ounces) and now I can leave my expensive smartphone behind and use this without worry of destroying it