When biking to Leh it is advisable to travel at a slow pace to allow acclimatization. A suggested itinerary is: Day 1 Manali - Jispa (138 km; 86 mi), Day 2 Jispa - Pang (161 km; 100 mi), and Day 3 Pang -Leh (174 km; 108 mi).
Screen repairs cost $109 for an iPhone 6 and $129 for the iPhone 6 Plus. If the Apple store near you has the parts, it will repair your phone. If it doesn't, it may replace it. There is a slim chance it may be sent out for repair. AT&T will not be involved in the repair nor will it be notified.
I have never had a screen protector on my iPhone (and I've had the original, 3G and now the 3G S). THe iPhone screens are sapphire glass, which is very difficult to scratch. None of the screens on any of my iPhones have any marks or scratches on them.I used a screen protector when I bought the first gen iPod Touch and it feels really nasty to use. Much prefer an unprotected screen. just read an article at iphonealley.com about how the new 3G S screen is highly scratchable. Take it for what it's worth. I use the InvisiSheild whole body kit love it (I used one on my 3G model and loved it too). I'm not one to take chances with ANY scratches on my phone-especially the screen.