Hello, I have an iPhone 6 plus that works but I can not find the network and does not work speakers since I have read a lot about Baseband reballing whether it is to fix it and whether it pays to repair I do not have how to diagnose it because I'm abroad a problem like the movie
https://www.youtube.com/watch?v=mkDhzqq3Yuk
https://www.youtube.com/watch?v=mkDhzqq3Yuk