I used it for almost two years, switched to a Sony. The Sony has some battery issues and i`m still using this now as the back-up phone- it has more than 3 years running.
Good as a phone, not so great as a smartphone.
Is a good phone for the price ratio. Battery life was decent need more ram but is a good phone
If you want to use this smartphone at full performance, change to custom rom to SlimDroid 4C
I use this device from january 2013, and I'm completely satisfied. I made two upgrades of software(from producer's site) succesfuly. The only minus I can mention is that the device is not DSFA(dual-SIM full-active).