"My phone is stuck on headphones" için yanıtthere might be somthing stuck in it so try to take a 3.5mm jack headphone and keep putting the headphones and it might chsnge I had the same thing with my iphone 6.
"home buttom replace two times but still dosn't work" için yanıtThe home button is not swappable it is paired to the logic bored. But you can get a blueooth home button online and it pairs through the bluetooth in your phone
"The battery replacement is beyond me. Can I send it in?" için yanıtif you are in warranty see this site for more info https://support.microsoft.com/en-us/help/4023527/surface-how-to-get-service-for-surface.