Unlimited Data Mobile Proxies on Real SIMs

Unlimited, unmetered and fair use

Three words get used as if they meant the same thing.

Unmetered means the provider does not count your traffic for billing. You pay for time, such as a day, a week or a month, and the bill does not change with GB.

Unlimited is a marketing word, and regulators read it with its qualifications. In July 2026 the UK Advertising Standards Authority ruled on a mobile operator's "unlimited data" claim that carried a 500 GB personal usage cap in its fair usage policy. The ASA said such limits must be made clear in the ad itself, because consumers were unlikely to understand from the headline alone that any restriction applied (ASA ruling on Utility Warehouse).

Fair use is the set of conditions that sits behind "unlimited": what counts as normal personal use, what happens above a threshold, and whether the operator may slow, charge or suspend. In the EU, the Open Internet Regulation lets access providers apply reasonable traffic management, provided it is transparent, non-discriminatory and proportionate, and requires contracts to explain how it can affect the service (Regulation (EU) 2015/2120).

For a proxy buyer, the takeaway is to separate two layers. The provider decides how you are billed. The carrier behind the SIM decides how its network treats heavy traffic. A good provider tells you about both.

Per-GB versus per-line billing

Proxy products sit on one side or the other of a simple divide.

Pooled mobile and residential products are usually metered. DataImpulse lists mobile traffic at $2 per GB on pay-as-you-go, with traffic that never expires (DataImpulse mobile proxies). Decodo's mobile pricing page showed plans from $3.75 per GB at 2 GB down to $2.25 per GB at 500 GB on a discounted display, against higher listed rates (Decodo mobile pricing). ProxyEmpire's rotating mobile list rates run from $9.00 per GB for a single GB down to $4.00 per GB on its 1,000 GB plan (ProxyEmpire pricing). All rates were read on 30 October 2026.

Dedicated mobile products are usually priced per device and period. ProxyEmpire lists its dedicated mobile plans as including one device with unlimited GB. IPRoyal lists dedicated mobile proxies from $10.11 per day or $130.00 per month, but its FAQ states a daily data limit of 30 GB per proxy (IPRoyal mobile proxies). That is a good example of why the plan page matters more than the banner: a per-line product can still carry a cap.

The pattern is straightforward. Metered billing is cheap for light, irregular use and expensive for heavy, steady use. A flat line price is the reverse.

A real SIM on every line

"Real SIM" claims are worth unpacking, because they explain why unmetered mobile data costs what it does.

A dedicated mobile line is a physical modem or phone with a SIM from the local carrier, sitting on that carrier's network in a fixed region. The provider pays for the hardware, the SIM's data plan, power and connectivity for the management side. When you rent the line, all of that is yours for the period, and no other customer routes traffic through it.

That has two consequences for data. First, the carrier's plan behind the SIM sets the ceiling. If a carrier deprioritizes or slows heavy users, your line can be affected however the provider bills you. Second, the provider can only promise unmetered data where its SIM plans allow it, which is why exceptions exist country by country.

Each Coronium line is one physical device with its own SIM, rented to one customer, with HTTP and SOCKS5 on every line. See dedicated mobile proxies for how a line is set up and handed over.

Where Coronium data is not metered, and the Brazil exception

On Coronium, data is not metered on dedicated lines. You pay for 24 hours, 7 days or 30 days in USD, and the price does not change with traffic. Not every carrier offers all three periods.

The exception is Brazil. Brazil lines include 20 GB of mobile data per month only, and they rotate on request only, with no timer. That makes them a fit for account work, app checks and light browsing from Brazil, not for bulk downloads. See Brazil mobile proxies for current carriers and stock. Today the Brazil listing shows Vivo in stock; 30 days: From $129.

Across the catalog, the countries with lines in stock right now are Brazil, Georgia, Germany, Netherlands, Poland, Singapore, United Kingdom and United States. Prices, carriers and stock on this page come from the live catalog each time it loads, so they match what you can buy.

Two practical limits still apply everywhere. Throughput depends on the carrier and the cell, so a line that is not metered is not the same as a line that is always fast. And a line has one exit address at a time; you change it by dashboard button, API call, rotation link or timer with a 60-second minimum, so heavy collection that needs many addresses at once may want more than one line.

Cost at your volume

The two metered columns use the DataImpulse pay-as-you-go mobile rate and ProxyEmpire's 1,000 GB list rate, both cited above, and leave out plan fees. The Coronium columns are the cheapest in-stock 30-day line in each country today.

The break-even point is the line price divided by the per-GB rate. At $2.00 per GB, a 30-day German line costs the same as about 60 GB of metered traffic, a UK line about 49 GB and a US line about 70 GB. At $4.00 per GB those volumes halve. Below the break-even, metered traffic is cheaper; above it, the line is. Our proxy cost estimator runs the same sums for your own rates.

Remember the Brazil exception when you model costs. A Brazil line's 20 GB monthly allowance caps how much traffic it can carry, so do not use it as the per-line side of a heavy-traffic comparison.

Planning heavy traffic on a line

If you expect to move a lot of data through one line, plan for the network rather than the bill.

Measure first. Run your real workload for a day and log bytes transferred per hour along with response times. That tells you whether the job is limited by the line's throughput or by the target's own pace. Many scrapers spend most of their time waiting on the site, not on the radio link.

Spread the load in time. Carrier networks are busiest in local evenings, when traffic management is most likely to apply. Shifting bulk transfers to off-peak hours in the line's own time zone is the cheapest performance gain available.

Split by job, not by volume alone. A line that runs a logged-in account session should not also carry a bulk download, because the session suffers when the link is saturated. Give heavy transfer its own line.

Watch for a trend, not a single slow hour. One poor reading usually reflects a busy cell. A steady decline across several days on the same line is worth raising with support, who can check the device and, where needed, replace it. Coronium allows up to 2 device replacements per rolling 24 hours; a replacement comes with new credentials and may be on a different carrier.

Questions to ask any provider about "unlimited"

Before you pay for an unlimited or unmetered mobile proxy, get written answers to five questions.

1. Is the product billed per GB, per period, or both? If both, what does the period include?
2. Is there a daily or monthly data threshold, and what happens above it: a slowdown, an extra charge or a suspension?
3. Which countries or carriers are exceptions? Ask for the list rather than "some locations".
4. Is the device dedicated to you, or shared with other customers who also use its data?
5. How do you change the IP, and is there a minimum interval?

For Coronium the answers are: billed per period with data not metered; Brazil lines include 20 GB a month; each line is one device for one customer; and the IP changes by button, API, rotation link or timer with a 60-second minimum. Compare live countries and carriers on the mobile proxies overview, or go straight to plans and current prices.

How we checked

Regulatory sources are the ASA ruling and the EU regulation linked above. Provider rates and caps come from each provider's public pages, read on 30 October 2026, and can change. Coronium facts come from the published product facts; prices, stock and break-even volumes are computed from the live catalog when the page renders. We did not measure carrier throughput or traffic-management behavior.

Frequently asked questions