Which unlimited eSIM is best in 2026? Plans and limits compared

This guide is based on the plans and policies each brand publishes as of October 2026, not on a test trip. Parts of Saily's site could not be read directly, so those points are marked unconfirmed. No prices appear here because they change weekly.

Which brands sell unlimitedのパッケージ

Airalo, Holafly, Nomad, Saily and Ubigi all sell unlimited plans. Holafly makes day-based unlimited its main model. Nomad has both Unlimited and Day Plans, where you choose a daily full-speed quota. Ubigi lists unlimited plans in 90+ destinations.

Unlimited rules side by side

The limits behind the word unlimited

• A daily threshold: past it, speed drops until the next cycle. For Airalo and Nomad the 24-hour cycle counts from activation, not from local midnight.
• Hotspot rules vary widely. Airalo has no device limit on unlimited plans, Holafly limits it by destination. If a laptop will share your connection, check this first.
• Topping up mid-trip: Holafly has discontinued it, and Nomad says add-ons start when the original plan expires, so pick enough days up front.
• No phone number: most plans are data only, so keep the Thai SIM on for bank OTP texts.
• Refunds: Nomad says all Unlimited plans are non-refundable, so confirm your phone supports eSIM and is not network-locked before paying.

The table compares published rules only. Real speed depends on the local network, signal and time of day, so treat the figures as thresholds and not as a promise of performance.

Which type fits which trip

For a trip of 10 days or less with uneven use, Nomad Day Plans let you pick a full-speed quota of 500MB to 3GB a day. It suits someone who knows roughly what a day costs in data. Past the quota speed falls to 512 kbps, much slower than the fallback on a typical unlimited plan.

On a trip of several weeks in one place, continuous roaming matters. Holafly's terms limit continuous roaming in one destination to 90 days and bar domestic use, so it does not suit a long stay.

If you travel with friends or family and want to share one connection, hotspot is the deciding point. Compare hotspot rules before you compare data size.

When unlimited is worth it

Unlimited suits people who use a lot of data every day, such as watching video, working over a hotspot or uploading photos all trip, and who do not want to watch a counter. The trade-off is slower speed past the daily threshold: 1 Mbps handles chat and maps but is uncomfortable for video.

When a fixed-GB plan is enough

If the trip is a few days and you mostly use maps, chat and social apps, a fixed-GB plan is usually enough, and a brand with top-up packages such as Airalo lets you add more if you run out. The sizing method is in the guide “How much data do you actually need abroad?”, which breaks it down by usage pattern.

購入前に確認すべきこと

• The daily full-speed threshold and the speed after it. Look for the figures on the plan page or the fair-use page.
• The hotspot rule for your destination, not the brand's general rule.
• The validity rule: whether days count from install, first connection or purchase.
• The refund policy for unlimited plans specifically.

This site sells eSIMs too: data-only plans priced in baht, delivered as a QR by email with no app needed, and each plan page states its networks and terms. Compare them with the other options using the same checks.

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Common questions