What "Unlimited" Actually Means

Read this before you buy an "Unlimited" plan

Almost no eSIM on earth is truly unlimited at full speed forever. When you see "Unlimited," it almost always means one thing: you'll never be cut off. It does not mean you get unlimited fast data.

The honest version is this. You get a fixed bucket at full speed. Once you burn through it, your speed drops to a slow trickle instead of stopping. The connection stays up. The speed does not.

The three words, defined

• Unthrottled means full network speed, no artificial cap. It's not unlimited data. It's unlimited speed, usually on a fixed data allowance.
• Throttled means your speed is cut to a fixed low rate. That's typically 512 kbps to 2 Mbps, which is fine for messaging and email and rough for streaming.
• Unlimited means you're not cut off entirely. After a daily or total allowance, you drop to throttled speed rather than stopping.

The real question is never "is it unlimited?" It's "what's the speed after the allowance, and how big is the allowance?"

The "Unlimited" model that trips people up

Most "Unlimited" eSIMs work on a daily bucket. You get a set amount of full-speed data per day, and that allowance resets every 24 hours from first use. So a plan might say "Unlimited" but really hand you 1 or 2 GB per day at full speed, then slow you to a trickle until the next 24-hour window.

That's great if your usage is spread out. It's a problem if you binge one heavy day, because the daily cap catches you regardless of what's left in the week.

Fair use: the throttle no one advertises

Some plans include a fair-use policy. You get a large unthrottled allowance over the whole plan, and only after you cross that threshold does the speed drop. A 30-day plan might give you 60 GB at full speed, then throttle to 2 Mbps for the rest of the month. If you're a heavy user, that's usually a better deal than a daily bucket, because the allowance is bigger and the throttle is gentler.

What to actually check

• The throttle speed. 2 Mbps is usable. 512 kbps is not, past email.
• The allowance before the throttle. Is it per day or per plan? How big is it?
• Whether you actually need "unlimited." If you use 5 GB a week, a fixed-data plan at full speed is often cheaper and faster than an "Unlimited" plan that throttles you.

The best value is frequently a fixed-data plan with no throttle, not an "Unlimited" one. "Unlimited" is a marketing word. "Unthrottled" is an engineering fact. Trust the engineering.

Our take

simZILLA doesn't pretend "Unlimited" means something it doesn't. We show the speed on every plan card, and when a plan is throttled after a fair-use allowance, we tell you. You deserve to know what you're buying. That's the whole point of us.

If you're on the fence, start with a Reloadable fixed-data plan. You get full speed, and if you run low you top up instead of getting throttled.