eSIM guide

“Unlimited”, decoded

No travel eSIM sold as unlimited is unlimited. Each one has a daily allowance at full speed and a throttled speed after that — and most providers make you go looking for the number.

ProviderFull speed untilThen throttled toHotspotPhone number
Saily 5GB/day1 Mbps Unlimited Optional paid add-on
Airalo 3GB/day1 Mbps Unlimited On some Data, Voice & Text packages and Discover+
Holafly ~2–3GB/day per third-party analysis; Holafly publishes no figure256–1024 kbps 1GB/day Never
Nomad 2GB/day512 kbps Supported Thailand 50GB plan only, per review; otherwise unclear
Ubigi No unlimited plan in several marketsn/a Unlimited Never — data only, no SMS
Prices checked by hand · 31 August 2026

What each provider actually does

ProviderThe fair-use policy in plain English
SailyFull speed until you use 5GB in a 24-hour period, then 1 Mbps for the rest of that day. The allowance resets daily.
AiraloFull speed until you use 3GB in a 24-hour period, then 1 Mbps for the rest of that day. The allowance resets daily.
HolaflyHolafly publishes no figure at all. Third-party analysis of its terms puts the cap at roughly 2–3GB a day, dropping to 256–1024 kbps. Not knowing is itself the problem.
NomadFull speed until you use 2GB in a 24-hour period, then 512 kbps for the rest of that day. The allowance resets daily.
UbigiSells no unlimited plan in the US, Thailand or New Zealand. Where it does sell one, it publishes no daily cap. Some plans instead run a fixed allowance with an unlimited 2 Mbps tail.

What the throttled speeds mean

The cap matters less than what happens after it. Once you are throttled:

  • 1 Mbps (Saily, Airalo) still carries maps, messaging, email, and standard-definition video that buffers. It is annoying, not crippling.
  • 512 kbps (Nomad) is enough for maps and text. Video is not realistic, and photo uploads crawl.
  • 256 kbps (the bottom of Holafly’s reported range) is close to unusable for anything but plain messaging.

How much data do you actually use?

Most travellers who are not streaming video use between 500MB and 1.5GB a day — maps, messaging, social feeds, a few uploads. On that pattern, none of these caps will ever bite, and buying unlimited is usually a waste. A 10GB fixed plan for a two-week trip costs a third of the unlimited price on almost every provider here.

Unlimited earns its price in two situations: you are tethering a laptop and working, or you genuinely cannot predict your usage. In the first case, check the hotspot rules before anything else — because that is where the real restriction lives.

Which eSIMs let you tether, and which quietly don’t →

How we got these numbers

Airalo and Saily publish their fair-use figures openly and we quote them directly. Nomad’s appears in its terms. Holafly publishes no figure, so the range shown comes from third-party analysis of its terms and is labelled as such throughout — we would rather show you an honest uncertainty than a confident guess. Ubigi does not sell unlimited in most of the markets we cover.