Sirina love and happy with this phone. Received on 13 Dec 2014. It handy and palm size to gripe and hold. Most important it battery saving. She charge the phone only once a week but compare to redmi note it take daily to charge. Smooth phone with no lag and good photo shoots. No complain from her after 3 weeks of use. Upgrading rom is easy, just follow jiayu main web and update to latest rom.