The first time I trekked the Everest Base Camp route, I'd planned to be offline for the whole thirteen days because I'd assumed mobile coverage stopped somewhere around Namche Bazaar. It didn't — Ncell towers reached further than I'd expected, all the way to Gorak Shep at the end of the trail. What I hadn't prepared was a working eSIM that would actually connect to Ncell from my foreign phone. I used teahouse Wi-Fi at pay-per-hour rates the whole trek. The next trip I bought a Nepal eSIM at the Kathmandu layover and had intermittent but real 4G at most lodges along the trail.
Why buying an eSIM beats the airport kiosk
Ncell and Nepal Telecom both operate prepaid counters at Tribhuvan International. A SIM is a real option for a longer stay, especially for trekkers planning multi-week trips. But the counters require your passport, a local verification step (biometric), and can be slow during peak trekking-season arrivals. An eSIM installs from a QR code before you fly, activates on first Nepali tower contact, and skips the arrivals queue.
Most travellers into Nepal fit one of three shapes: trekking visitors for Everest Base Camp, Annapurna Circuit, Manaslu, or Langtang; cultural visitors to Kathmandu, Pokhara, Chitwan, and Lumbini; and pilgrimage or volunteer-NGO visitors on longer stays. All three want data from the gate onward.
What Ncell and Nepal Telecom coverage actually looks like
Kathmandu has solid 4G across the central Thamel tourist district, Boudha, Patan, Bhaktapur, and the airport corridor. Pokhara has strong 4G across Lakeside, Damside, and around Phewa Tal. Chitwan, Lumbini, and the main pilgrimage centres have 4G in town.
The Everest region has Ncell 4G deployments along the EBC trail. Lukla, Namche Bazaar, Tengboche, Dingboche, Lobuche, and Gorak Shep all have coverage at lodge clusters. Base Camp itself has marginal coverage. High passes like Cho La and Kongma La can drop signal briefly.
The Annapurna region has coverage along most of the classic circuit. Teahouse villages in Chame, Manang, Muktinath, and the lower Mustang valley have 4G. Thorong La pass (5,416m) thins coverage but usually reconnects during the descent.
Other trekking routes (Manaslu, Langtang, Upper Mustang) have variable coverage depending on route and altitude. Remote treks may run largely offline.
Most travel eSIMs route through Ncell, which has the widest trekking-trail footprint.
How the major eSIM providers compare in Nepal
Pricing models vary across providers. Custom plans, where you set data amount and validity independently rather than picking from preset bundles, are 99esim's distinguishing feature and the only option in the tracked set for that level of flexibility. Airalo sells fixed bundles with the widest country list in the category. Holafly sells unlimited-day windows at premium Nepal pricing. Nomad covers Nepal on a fixed-bundle model. Ubigi prices on short-validity country tiers at high Nepal rates.
Nepal pricing varies meaningfully — 99esim and Nomad are the cheapest country-plan options; Holafly and Ubigi price Nepal as premium markets. The matrix below spells out the per-axis shape for Nepal specifically.
Install timing: when to set it up
Install the eSIM the night before you fly, or during a Delhi, Bangkok, Doha, or Istanbul layover. The QR code generates immediately after payment; scan it with your phone's eSIM settings; the profile installs but doesn't activate until it first sees a Nepali tower. At the gate, switch your home SIM's data off and land at Tribhuvan with data already working.
iOS 17.4+ devices can install directly from a provider's app without scanning a QR code, on providers that support it. Android users still scan a QR code, which takes thirty seconds.
Who should pick what
A two-week Everest Base Camp trek benefits from a 10 GB / 30 day plan because pre-trek prep, trail photo uploads, and daily communication add up. 99esim or Nomad offer the most competitive pricing for this use case.
An Annapurna Circuit or shorter trek fits a 5 to 10 GB plan.
A two-week cultural circuit (Kathmandu-Pokhara-Chitwan-Lumbini) works on a 5 GB plan.
A heavy streamer or content creator posting daily trek content without meter anxiety fits Holafly's unlimited-day model only if the premium Nepal day rate is worth it.
A short business or cultural visit to Kathmandu fits any provider's 1 GB or 3 GB starter.
A group of three or more travelling together, particularly a trekking party, benefits from 99esim's group eSIM, which covers up to four devices on one purchase. None of the tracked competitors offer that product today.
A note on altitude and battery
Trekking at altitude drains phone batteries faster than sea-level conditions. Combined with heavy trekking-app use (map, weather, Peak Finder, AllTrails), phone-battery management becomes a trek-critical skill. Carry a USB power bank rated for cold weather, keep the phone in an inside pocket against your body at night, and accept that even a full charge may only last a day of active trail use. The eSIM handles connectivity; the cold handles the battery on its own terms.