Once you arrive in Kathmandu airport, we recommend you purchasing a local SIM card. You can use this SIM card to communicate with your friends or family when you are in Kathmandu and during the entire trek. But, when you are climbing the Everest, the SIM card won’t work, and if it does, communication is possible on a very limited basis. You can use a satellite phone (if you have one) or you may request us to supply a satellite phone for your expedition journey to the Everest.