I bought karbonn A7 two years ago from snapdeal, this is very poor quality phone, very slow processing because it has very short ram, heating issue, the sound is very low you can not listen to anything clearly.
Always network problem, display colours are very poor touch is also not working fine and its camera quality is very poor, totally worst phone.
After 6 months of buy I had hanging problem so called to care service they come to me after 12 days, karbonn care service is also very poor, dont go for it.