I just bought this mobile 5 months ago and I dont think so about any problem related to any thing.
It network coverage is amazing. There are 4 slots where 3 are sim slots and 1 is memory card slot.And I am using 2 jio cards in same mobile and mobile is recieving perfect network. Uptill now I dont want the help of customer service as no problem has arised but I can say you all that if mobile is this much nice, customer service would be also perfect.
Price of this mobile is rs 7000 and no other extra charges. I prefer you to buy this mobile as this mobile has lots of features in such a small price. It has 13 mp rear and 8 mp front camera. And many more things available.thank you.