If you have ever purchased a travel eSIM advertising “unlimited data”, you may have noticed something frustrating: your connection starts out fine, then suddenly crawls along at barely usable speeds. That is because most eSIM providers give you full speed for only the first 1 GB or so, then throttle your connection down to anywhere between 128 and 512 Kbps — with some budget plans going even lower. SIMzip takes a fundamentally different approach. We offer uncapped data speeds with every package, delivering genuinely fast, real-network speeds with absolutely no throttling.

The Dirty Secret Behind “Unlimited Data”

Many eSIM providers market their plans as “unlimited data” to attract travellers looking for worry-free connectivity. What they do not tell you is buried in the fine print: at best, you get 1 GB at full speed, and once that high-speed allowance runs out, your connection is throttled so severely that you can barely load a webpage. The providers do this deliberately — by capping your speed, they ensure you never consume enough data to eat into their margins.

Let us do the maths. At a throttled speed of 256 Kbps, the maximum data you can physically consume in 24 hours is roughly 2.7 GB (256,000 bits/s × 86,400 seconds ÷ 8 = ~2,764 MB). At the lower end of 128 Kbps, that drops to just 1.35 GB per day. The “unlimited” label is nothing more than a marketing trick — your speeds are throttled so you simply cannot go above their limits, allowing providers to sell the illusion of endless data whilst keeping their costs rock-bottom.

Read the Fine Print

Before purchasing any travel eSIM that claims to offer unlimited data, there are three things every consumer should check in the fine print:

  • High-speed data allowance: How much data do you actually get at full speed before throttling kicks in? This is usually just 1 – 2 GB.
  • Throttling period: Is the speed cap applied per day or for the entire validity of the plan? A daily reset is slightly better, but a plan-wide cap means once your 1 – 2 GB is gone, you are stuck at crawling speeds for the rest of your trip.
  • Throttled speed: What speed is actually promised after the cap? Anything between 128 – 512 Kbps is common, and at those speeds even basic tasks like loading maps or sending photos become painfully slow.

How SIMzip Does It Differently

At SIMzip, we believe in transparency. We sell clearly defined data packages — you know exactly how many gigabytes you are getting — but with unlimited speed. There is no throttling, no speed cap, and no fair-usage trick hiding in the small print. When you connect with a SIMzip eSIM, you get the full, uncapped speed that the local network provides.

And those speeds are genuinely super-fast. Here is what our users typically experience in major cities:

  • New York City: 50 – 300 Mbps on 5G networks
  • London: 50 – 300 Mbps across multiple carriers
  • Dubai: Up to 800 Mbps on 5.5G networks

These are real, measured speeds delivered by the actual mobile networks — not artificial limits imposed by us. When a network delivers fast connectivity, SIMzip passes that speed straight through to you.

“We would rather give you 5 GB at 300 Mbps than ‘unlimited’ data that gives you 1 GB and then throttles you to 128 Kbps for the rest of your trip. One lets you video call, stream, and work without interruption. The other can barely load a webpage.”

Why We Are Not the Cheapest — And Why That Matters

SIMzip is not the cheapest eSIM provider on the market, and we are upfront about that. Providers who offer rock-bottom prices for “unlimited” plans can afford to do so precisely because they throttle speeds after just 1 – 2 GB of full-speed data, ensuring customers never consume enough to cost them real money. The “unlimited” label shifts product — but it does not deliver genuine connectivity.

With SIMzip, you pay for genuine, uncapped network performance. That means your video calls connect instantly, your maps load in real time, your photos upload in seconds, and your streaming plays without buffering. You are paying for a connection that actually works the way fast mobile internet should.

Honest Data, Unlimited Speed

Our approach is simple: fixed data packages with unlimited speed. You choose the amount of data you need — whether that is 1 GB for a quick trip or 20 GB for an extended stay — and every single megabyte is delivered at the fastest speed the local network can provide. No throttling to 128 Kbps after a hidden cap. No misleading “unlimited” claims. Just super-fast, uncapped data speeds from the moment you activate your eSIM.

Ready for genuinely fast travel data? Visit the SIMzip app and experience uncapped speeds on your next trip.