Hey guys I am not used tata docomo but my dad did. Tata docomo is nothing but a trash! Even trash is better than this. There customer care survice is joke. They will never give the proper answers of your problem. It has poor connection everywhere. Whenever I try to call my father it always say out of coverage or something else.and and the one of the major problem is sometimes it show roaming. Really! I am not kidding.it shows roaming steel u can call at normal rates. But due this u cant use your net. So I personally recommended you to do not use it.