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eSIMrat

Fair use policy

Buying and comparing

Updated August 19, 2026

by Rony

The fair use policy (FUP) covers the conditions framing an “unlimited” plan: most often a daily data threshold beyond which speed is heavily reduced, sometimes restricted uses (tethering, continuous streaming). It is the clause turning “unlimited” into “unlimited, but”: it sits in the plan's terms, rarely on the front of the product page.

Why it matters when travelling

On the travel eSIM market, most unlimited plans apply a daily high-speed threshold, then a reduced speed until the next day. Depending on that reduced speed, the difference is enormous: at 1 Mbps you browse and message without suffering, at 256 kbps even a web page crawls. Those two “unlimited” plans are not remotely equivalent.

Also in FUPs: the ban or limitation of tethering, and the “tourist use” clause capping how long some offers can be used continuously. Reading them before buying takes two minutes and avoids genuine disappointment.

The misconception

“Unlimited means no limit at all.”

Commercially, “unlimited” means “no billing by volume”. Technically, almost every unlimited plan has a FUP: daily threshold, reduced speed after it, framed uses. The right question is not “is it unlimited?” but “how much high speed per day, and what speed after?”.

Reading an unlimited offer: the 4 questions

QuestionWhere to find the answerWhy it is decisive
What daily high-speed threshold?FUP / plan termsThat is your real daily volume
What speed after the threshold?FUP1 Mbps usable, 256 kbps painful
Is tethering allowed?FUP / provider FAQCrucial for laptops and travel companions
When does the threshold reset?FUPPer calendar day or rolling 24 h

What it changes when you compare

This is a pillar of the esimrat method: an unlimited plan is compared through its FUP, not its label. In the end, an “unlimited” with 2 GB/day at high speed is really a 60 GB/month plan: that real volume is what belongs in the price-per-GB comparison.

Compare eSIM plans by destination

The rat's tip: Multiply the daily threshold by the number of days of your trip: you get the real volume of the “unlimited” plan. Compare THAT figure to the price of a regular plan of the same size: unlimited loses more often than people think.

See also

Frequently asked questions

How do I know whether an unlimited plan has a fair use policy?

Assume it does: search for “fair use” or “acceptable use” in the plan's terms, or for a daily threshold mentioned in the FAQ. A provider that clearly displays its threshold and throttled speed is more trustworthy than one that hides them.

What happens when I pass the daily threshold?

Speed drops to the stated value (often between 256 kbps and 1 Mbps) until reset, usually the next day. Nothing extra to pay: it is a speed reduction, not an out-of-plan charge.

Is a fair use policy legal?

Yes, as long as it is brought to the customer's knowledge in the offer's terms: it is a common contractual clause in telecoms. The point to watch is not its legality but its readability: good providers display it, others bury it.