Unlimited data · 2026 guide
The truth about “unlimited” eSIM plans.
Three kinds of unlimited exist, and only one of them is actually unlimited. Here's how to tell them apart before you buy.
Know the tiers
Three flavors of “unlimited.”
The word is the same. The experience is not.
Truly unlimited
No speed throttle, no daily cap
The rarest tier. Full-speed 4G/5G with no FUP (fair-use policy) clause. Usually only available on premium regional plans or 30-day+ subscriptions. Expect $40–80 / month.
Daily cap unlimited
Full speed up to X GB/day, then throttled
The most common 'unlimited' — typically 1–3 GB of full-speed data per day, after which speed drops to ~512 kbps or ~1 Mbps until midnight local time. Priced $8–25 / week.
FUP unlimited (the asterisk tier)
Full speed up to X GB total, then heavily throttled
Full speed until you hit a total cap (often 10–20 GB), then throttled to 128–256 kbps for the rest of validity. Marketed as 'unlimited' but effectively a capped plan with an emergency trickle.
Our verdict
Should you actually buy unlimited?
3–5 day city break
Skip unlimited — a 5–10 GB plan is cheaper and you won't hit the cap.
7–14 day travel + work
A daily-cap unlimited is the sweet spot. Predictable, worry-free.
Digital nomad, 30+ days
Go truly unlimited if you tether a laptop. Otherwise 30 GB wins on price.
Cruise / remote area
Unlimited doesn't help — coverage is the bottleneck, not data volume.
Rule of thumb
If your average day is under 1 GB, skip unlimited.
Most travelers use 0.5–1.5 GB/day. A 20 GB plan lasts two weeks at that rate and costs less than almost any unlimited option. Unlimited wins only when you're tethering, streaming, or genuinely unsure of your usage.
Where unlimited is actually worth it
Unlimited plans carry a premium that only pays off in a handful of destinations — usually ones where you are navigating constantly, tethering, or cannot rely on wifi.
South Korea eSIM plans
Google Maps is crippled here, so you lean on data-hungry Korean map and transit apps all day. One of the few places unlimited is a sensible default.
China eSIM plans
Mobile payment and ride-hailing are close to mandatory day to day, which makes running out genuinely disruptive rather than inconvenient.
Vietnam eSIM plans
A popular month-long remote-work base, where a 30-day unlimited plan beats stacking short bundles.
Turkey eSIM plans
Long intercity drives with constant live navigation, and thinner wifi outside the main tourist centres.
FAQ
Are unlimited eSIM plans really unlimited?+
Some are, most aren't. The three common tiers are: truly unlimited (no cap, rare and premium-priced), daily-cap unlimited (full speed up to 1–3 GB/day, then throttled until midnight), and FUP unlimited (full speed up to a total cap, then throttled to near-unusable 128 kbps). Always read the fair-use clause before buying.
Which is best: unlimited or a 20 GB plan?+
For trips under two weeks, a 20 GB capped plan is almost always better value. Unlimited makes sense when you're tethering a laptop daily, streaming frequently, or on a 30+ day trip where running out mid-month is a real risk.
Can I use unlimited eSIM for hotspot / tethering?+
Most do allow hotspot, but some budget unlimited plans block tethering entirely or throttle hotspot traffic separately. If tethering is important, confirm it's explicitly allowed in the plan terms before buying.
What speed do unlimited eSIMs offer?+
Full-speed unlimited plans deliver whatever the underlying 4G/5G network supports — typically 50–400 Mbps on 5G. Once throttled, speeds drop to 128 kbps to 1 Mbps depending on the provider. That's fine for messaging, bad for video.
Are unlimited plans available everywhere?+
No. Most unlimited plans are regional (Europe, Asia, Americas) or single-country for popular destinations. In smaller markets, you'll only find capped plans.