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.
iPhone screen repair pricing. You need to replace your screen due to accidental damage or mishandling. Accidental damage isn't covered by the Apple warranty. Your iPhone screen gets broken while it's still under warranty and you don't have AppleCare+ coverage. Your screen stops working and your iPhone isn't covered by the Apple warranty, consumer law, or AppleCare+.