I am flying JFK-IST-BUD. When I check in online with my mobile, no boarding pass. After I updated passport info on my computer, I can print the boarding pass for the first leg, but not the second leg. However, I went to my mobile, I can get mobile pass for the second leg.

My question, Does JFK-IST take mobile boarding pass? If it does, is there anyway that I can obtain the mobile boarding pass?