Not sure about the quality as it is just like another Chinese phone nothing special and battery goes down quickly. Common issues are like your contacts book and call records disappears regularly, wifi disconnects regularly. My receiver is not working from 21st Aug 2016, I have bought it in Jan 2016 only.
Service is pathetic.
Service Centers available only in few cities and they don’t have any spare parts and if you have to get it fix you have to left it to the service center after deleting all your data. Also the support guys as usual crap and no help no consideration. Better avoid using this crap phone without service.
So never buy this phone you will not any support from Amazon as well after sell.