I have a Nepali SIM card for my mobile phone now, so I can call home. Rates are good to Canada - only 3 rupees per minute (less than 4 cents). We'll find out what coverage is like in the mountains when we head out on trek. There is supposed to be some coverage - even Everest base camp has 3G! Some of the remote valleys probably won't have any coverage though. Telecom here isn't bad, we even have free wifi at the hotel.