I have used this phone. I suggest every one to not purchase this product. This product is too much hanging and I have purchased it 2 month before. It has a problem of sensor I has visited 5 times service centre but my mobile still problem. Hanging Problem is main problem.
The 4G feature did not work . Its speed is only 100-200 kb/ps but a 4G phone has minimum 1-2MB /ps speed. This mobile is not made for those people who want fast surfing. It starts the application in too much time. J1 is very lazy features.