# Chiang Mai Wi-Fi, SIMs & Internet for Remote Workers > Set up connectivity in Chiang Mai — SIM/eSIM options, home fibre, pocket Wi-Fi and backup plans for when the connection drops. URL: https://chiangmaibrief.com/guide/wifi-sims-internet-remote-workers/ Last-Modified: 2026-09-07 Author: The Chiang Mai Brief ## Sort this in the first week Connectivity in Chiang Mai is genuinely good — cheap fibre, strong mobile coverage, and enough competition to keep prices honest. But arriving without a plan means a few days of hunting for Wi-Fi passwords and missing a call because a café network dropped. Do it in this order. This guide sits under our coworking hub [/coworking-and-remote-work/ →](/coworking-and-remote-work/) , which covers the spaces themselves. ![A home fibre router on a shelf in a Chiang Mai condo](/images/content/home-fibre-router-with-blinking-lights-on-a-shelf-.webp) ## Day one: a Thai number A local mobile number is not optional. Bank accounts, food delivery, ride-hailing, verification codes for almost everything — all of it assumes a Thai number. **Where to get one:** the airport on arrival, any mall counter, or an operator shop. Bring your passport. **Prepaid or postpaid:** prepaid is simpler and doesn’t need a long-stay visa or bank account. Top up in any 7-Eleven. Postpaid gets you slightly better rates but needs documentation. **eSIM:** if your phone supports it, an eSIM saves the counter visit and can be activated before you land. Slightly less convenient to top up and switch, but fine for most people. Data packages are cheap by international standards. Buy a generous one — mobile data is your fallback when everything else fails. ## Week one: test before you commit Before signing any lease, test the internet in the actual unit at the actual time you’ll be working. A speed test at 10am on an empty building tells you nothing about 8pm when everyone’s streaming. Until the fibre is in, one of the best coworking spaces in Chiang Mai [/guide/best-coworking-spaces-chiang-mai/ →](/guide/best-coworking-spaces-chiang-mai/) is the reliable fallback. Things to check: 1. **Download and upload speed**, in the room where you’ll work 2. **Whether it’s building-provided or a private line** — building-wide internet is often shared and slower 3. **Whether you can install your own line** if the existing one isn’t good enough 4. **Whether there’s a wired option**, which matters for calls ![A phone showing an internet speed test result in front of a laptop](/images/content/phone-screen-showing-an-internet-speed-test-result.webp) ## Once settled: home fibre If you’re staying more than a few months and taking calls for a living, install your own fibre line. It’s the single biggest quality-of-life upgrade in a remote worker’s setup here. | Detail | Typical | | --- | --- | | Monthly cost | 500–800 THB | | Speed | Several hundred Mbps, often symmetric | | Installation | A few days to a week | | Contract | Usually 6–12 months | | Requirements | Passport, address, sometimes a Thai account | Symmetric upload is the point. Video calls, large file uploads and screen sharing all depend on upstream capacity, and consumer connections in many countries skimp on it. Thai fibre generally doesn’t. ## Backup plans Chiang Mai’s infrastructure is reliable, but building-level outages happen and green-season storms occasionally take lines down. A layered setup means an outage costs you five minutes, not a day: - **Primary:** home fibre, wired where possible - **Secondary:** phone hotspot on a generous data plan - **Tertiary:** a nearby café or coworking space you already know works If you have a critical call schedule, keep a second SIM on a different network. It’s a small monthly cost against the specific failure mode where one operator has a regional problem. ## A note on VPNs and remote access Many people working for foreign employers run a VPN. Speeds are generally fine, though routing adds latency. If your work requires a specific corporate VPN, test it in the first week rather than assuming — occasionally a particular configuration behaves badly on Thai networks and you want to discover that before a deadline. Got questions? ## Common questions Which is the best SIM provider in Chiang Mai? AIS, TrueMove and dtac all provide good coverage across the city and reasonable data packages. AIS tends to have the widest rural coverage if you travel out to the mountains. For city use the differences are marginal — compare current data plans rather than agonising over the network. Can I get home fibre on a short lease? Sometimes. Providers usually want a contract of 6–12 months, though shorter arrangements exist. Many condos already have building-wide internet included or available, which is the simpler route for short stays. Otherwise a mobile hotspot on an unlimited data plan works well. How fast is internet in Chiang Mai? Home fibre packages routinely deliver several hundred megabits symmetric for roughly 500–800 THB a month, which is far beyond what video calls need. Mobile data is fast and cheap. The weak point is usually a busy café network rather than the city's infrastructure. More in this area ## Related guides Explainer ### Best Coworking Spaces in Chiang Mai Chiang Mai's main coworking spaces — Yellow, Punspace, Alt\_ChiangMai, Hub53 and more — with pass prices, Wi-Fi and community notes. 6 min read [Best Coworking Spaces in Chiang Mai →](/guide/best-coworking-spaces-chiang-mai/) Scenario ### Best Work-Friendly Cafés in Nimman & Santitham Cafés in Nimman and Santitham that genuinely support laptop work — Wi-Fi speed, plugs, noise, seating and long-stay etiquette. 5 min read [Best Work-Friendly Cafés in Nimman & Santitham →](/guide/work-friendly-cafes-nimman-santitham/)