I just spoke to Mark a bit earlier today! They were able to keep their phones only by hiding them!

 He said it was a long tough drive to China. Right now is the rainy season in that region and Nepal is a very poor country, most of the roads are dirt roads that wind around the mountain side. After enough rain hits the dirt roads, they turn into one big mudslide, not exactly the kind of drive anyone would want to be a part of.
They ended up making it safely to Tibet around 2:30AM our time. They are in a town named Nyalam and their accommodations are at what is called a "Tea House" they have to sleep three to a small room, the toilet is a hole in the ground which is just down the hall from them! Imagine the smell UGH! They plan to stay where they are for the next two days before making their way up closer to base camp. The elevation is a bit over 12,000 ft so everyone needs a chance to acclimate.
My next update may not be for a few days since life for them all will be a bit uneventful staying in one location! Until then...