Compare coverage for where you'll actually be
Network coverage and signal quality can vary meaningfully between Kathmandu Valley, other cities, and remote trekking or rural areas. Ask specifically about coverage along your planned route rather than assuming uniform service nationwide.
For trekking regions, ask local guides or trekking shops which network typically has better coverage on that specific route, since this can change between valleys and passes.
Example: A trekker buys a SIM based on strong coverage experienced in Kathmandu, assuming it will work similarly throughout an Everest region trek, only to find signal drops out entirely for long stretches above certain villages, while a different network maintains at least intermittent coverage on the same route. Asking a trekking shop or guide specifically 'which network works best on this exact route?' before buying gives more route-specific, reliable guidance than a general assumption based on city coverage.
For a multi-region trip covering both a city stay and a remote trek, consider whether it makes sense to have two SIMs from different networks if budget allows, since relying on a single network's coverage gaps in a remote area could mean days without any connectivity at all.
Understand registration requirements
Buying a SIM card in Nepal generally requires identification, and specific documentation requirements can differ for residents versus visitors. Carry your passport or relevant identification when purchasing.
Confirm current registration requirements directly with the network provider or an authorized dealer, since procedures can be updated.
Example: A tourist arrives at a small SIM outlet without their passport, having left it at the hotel, and is turned away since registration requires original identification, not a photo or copy. Carrying the actual passport (or relevant ID) specifically for this purchase, rather than assuming a photo will suffice, avoids a wasted trip.
Registration procedures can change, so a returning visitor relying on what was required during a previous trip years earlier should confirm current requirements rather than assuming the process is identical, since documentation rules for visitor SIMs are periodically updated.
Compare data and calling plans honestly
Ask about actual data speeds in the areas you need coverage, not only the advertised plan size, and compare per-day or per-week tourist packages against monthly plans if you are staying longer.
Ask about international calling rates and roaming charges if you need to stay in touch with contacts outside Nepal.
Example: A visitor staying for three weeks buys a series of 3-day tourist data packages because that was the first option offered, not realizing a single monthly plan would have worked out considerably cheaper for the same total data allowance over their actual stay length. Asking 'given I'm staying three weeks, what's the most cost-effective plan option?' rather than defaulting to the first tourist package suggested can meaningfully reduce total cost.
For anyone needing to make regular international calls, compare the network's specific international calling rates rather than assuming they are similar across providers, since these rates can vary considerably and a data-focused plan sometimes has notably higher voice call rates than a plan designed around calling.
Buy from authorized dealers
Purchase SIM cards from authorized outlets, official network stores or the airport, rather than from unverified street vendors, to reduce the risk of an improperly registered or faulty SIM.
Keep your purchase receipt and any registration documentation in case you need to resolve an activation issue later.
Example: A traveller buys a SIM from an unofficial street vendor at a lower price than the airport kiosk, only to find the SIM never properly activates, and with no official receipt or registration record, has no straightforward way to resolve the issue or get a refund. Paying the slightly higher price at an authorized outlet or the airport, where activation is handled properly and a receipt is provided, generally proves worth the small cost difference.
Keeping the physical or digital receipt, along with any activation confirmation message, means that if an issue arises days into the trip, you have the documentation needed to get help from an authorized outlet rather than starting from scratch with no proof of purchase.
Plan for practical connectivity needs
If you rely on mobile data for navigation or translation apps while travelling, download offline maps and any essential app content in advance in case of coverage gaps in remote areas.
Carry a portable power bank, since checking a weak signal frequently can drain your phone battery faster than usual.
Example: A traveller relying entirely on a live map app for navigation in a remote area loses signal completely for several hours, and without having downloaded an offline map in advance, has no way to confirm the correct route. Downloading offline maps for the entire planned route before losing reliable connectivity, done as a five-minute task while still in a city with strong signal, avoids this problem entirely.
In areas with weak or intermittent signal, a phone constantly searching for a network signal drains battery noticeably faster than normal use, making a portable power bank a practical necessity rather than an optional extra for any extended time in a low-coverage area.
Know what to do if your SIM stops working
Keep the network provider's customer service number saved separately, such as written down or in an email, in case you cannot access it through your phone.
For a data or activation issue, visiting an authorized outlet in person is usually more effective than relying only on phone support, especially outside major cities.
Example: A traveller's SIM suddenly stops receiving data mid-trip, and since the customer service number was only saved as a contact on the now-non-functional phone connection, there is no easy way to call for help using a different method. Having the number written down separately, or saved in an email accessible from any device, provides a fallback when the phone itself is the source of the problem.
For a persistent activation or data issue outside a major city, phone support may be limited or the queue lengthy; visiting the nearest authorized outlet in person, even if it requires some travel, is often the fastest path to an actual resolution rather than repeated unanswered calls.
