I have been bourt the blackview bv7000 an really like the phone but very disappointed to find when I received a call afterwards my screen was unresponsive and 2nd issue is that when I plug headset in the sound still comes out of the phone I want to get fixed how would I check my warranty online

Hi there, unfortunately you'll have to contact your seller as he's the only one who manages warranty terms and repair/refund/replacement under warranty. I hope you bought from a trusted seller.