Share your experience!
My country Azerbaijan not in Contact us page.
And I don't know best service in Baku.
This phone dead for me.
I'm sorry to hear that, what if you contact the seller? reinstalling lollipop with PCC will smooth things out but you need to repair the volume keys first.
I don't know has any problem my phone motherboard.
For that I don't want to replace MAIN Flex cable. If have any problem in phone motherboard, why me need replacement flex cable?
For broken touchscreen I replaced phone LCD too. Now I have not money to replace phone motherboard 
Thank's for all answers.
You will have to get someone to inspect your phone,t here's no other way around it