As of 2014, there are two mobile operators that offer mobile connectivity for tourists. Some have reported that Nepal Telecom works better on the trekking circuit while in other locations, Ncel has a stronger signal. A passport, copy of passport, and passport photo are required to purchase a SIM card.
Top Prepaid SIM options
1. Ncel
Cost: 100 – 300 NPR ($1 – $3 USD) for the SIM, 199 NPR ($1.99 USD) for 100 mb lasting 30 days, or 699 NPR ($6.99 USD) for 1 gb lasting 30 days. Link
2. Nepal Telecom
Cost: 200 NPR ($2 USD) for the SIM, 1 NPR ($.01 USD) for 1 mb, or 100 NPR ($1 USD) per 100 mb data. Link
Where to Buy: Authorized outlet.
Call for Information: +977 1-4256909
Call for Emergency: 100