What a mobile proxy cannot do for you

I sell Singapore mobile proxies. The modems are mine, the SIMs are in my name, and the rack is in my house.

So this is an odd thing for me to publish. I am publishing it because almost every unhappy customer I have had was unhappy about something I never sold them, and they worked that out after paying.

Here is the list.

It is not anonymity

A proxy changes which network your traffic appears to leave from. That is the mechanism, the whole mechanism. It does not reach past the connection into what you do once you get there.

And the first thing most people do is log in.

The moment you authenticate, the platform knows exactly which account it is talking to, what that account has done since the day it was created, and what it did five minutes ago from a different address. Your address is the envelope. Your login is the signature at the bottom of the letter.

The half people miss is that a browser carries identity across an address change entirely on its own. Cookies, local storage, a service worker installed last week. Swap the address underneath a profile that has been signed in for a month and you have changed one field in a record the site already holds in full.

A customer once asked whether my lines would stop his employer seeing what he browsed. His employer had issued him the laptop. Nothing sold by a proxy company touches that problem.

If anonymity is the real goal, a proxy is close to the wrong tool, and the fact that it gets sold on the same shelf as VPNs is why people think otherwise.

It cannot referee an argument between your machine and your connection

Your traffic can arrive from a StarHub tower while every other signal your machine emits says you are in Frankfurt.

DNS is the classic. Plenty of setups push web traffic through the tunnel and leave name resolution going out over the home connection, so the address says carrier and the lookups say a residential ISP eight time zones away. Both are visible to the site. They disagree.

Same for the timezone your operating system reports, the language header your browser sends, the locale your scripts run under. None of that sits inside a proxy’s reach. A proxy moves packets. It has no opinion about what your browser is confessing while they move.

I had a customer spend two weeks certain his addresses were burned. The addresses were fine. His machine was answering a different question than his connection was, and every site he touched could read both answers side by side.

The payment rail is an identity graph and it never sees your IP

Behaviour gets accounts flagged, and most people buying proxies already know that part. Pace, timing, activity that looks machine driven.

The one that catches people out is money.

Nine accounts funded from the same card are linked. Nine accounts paying out to the same destination are linked. Same billing name, same wallet, same top up in the same minute. Payments are regulated and have to stay traceable, which makes them a far better link than anything the network layer exposes. A perfect address on every one of those accounts changes none of it.

Same story with a shared recovery mailbox. I have seen a set kept carefully separate at every layer the owner had read about, all pointing at one inbox for password resets.

And it reaches back further than people expect. A card used on an account that was closed two years ago is still that same card today.

When a whole set drops together and the addresses were all different, look at what they shared. It is almost always something living outside the browser.

Nobody can sell you approval

No proxy seller has a relationship with any platform you care about. There is no register, no whitelist, no arrangement. If a listing says its IPs are approved somewhere, or work with a named platform, ask what that relationship is, because there isn’t one.

Platforms also decline for reasons that have nothing to do with connectivity. A document that failed verification. A business name that does not match a registration. A country rule about who can hold that account type. An old flag attached to an identity years ago.

When somebody asks me whether my lines will get them approved on a named platform, the honest answer is that I do not know and neither does anybody else selling addresses. I can tell you which carrier the line sits on, that it is a real SIM, and that nobody else is on it. Past that I am guessing alongside you.

Guaranteed approval is not a product. Anyone offering it is making a promise about a decision they have no part in.

A slow job stays slow

The question arrives in a very specific form: my scraper takes nine hours, would better proxies speed it up.

Usually no, and often the opposite. A mobile hop adds latency, because there is a radio at the end of it.

Do the arithmetic on your own job before you blame the address. Forty thousand requests carrying an extra 180ms of proxy latency costs you two hours. The same forty thousand requests with a three second fixed sleep between them costs thirty three hours. The sleep is your problem. So is fetching every image on a page you only wanted the price from, and so is a retry that restarts the whole page instead of resuming where it stopped.

A proxy cannot make your code concurrent, and it cannot stop you downloading four megabytes to read one number.

And if your fix for a slow job is to hammer harder, you have traded a speed problem for a blocking problem. That second one is a genuine address conversation. It is also a conversation you only earn by fixing the first thing.

What you are actually buying, in one sentence

It changes which network your traffic appears to originate from, on real carrier infrastructure, with a genuine history of ordinary phone use behind the address.

That is the whole product. Everything good about it comes downstream of that single property. The address reads as a person because people have used it. It sits in Singapore because the SIM physically does. You can hold it for a full session or force it to change, because there is a modem on a shelf I can reach.

Narrow. Also worth real money, on the days when that narrow thing is the exact thing in your way.

Four cases where the address genuinely is the constraint

The content is geo restricted and you are outside Singapore. Pricing that only renders for local visitors, a listing that never appears, a redirect that sends you elsewhere. Code does not solve geography.

Your traffic leaves a datacenter range and the site treats you like the server you are. A problem about the type of address, with an answer about the type of address.

You are on a cheap shared pool and you have inherited whatever the previous twenty users did with it. Moving to an address nobody else touches clears that inheritance in one step.

You need several identities that must never share a connection. That is separation, a real requirement, and the most common good reason people buy from me.

Outside those four, be suspicious of your own diagnosis.

The test that costs nothing

One question before you buy from me or anybody else: what specifically fails today, and is the address the reason?

Write the failure down properly. The status code, the page, the exact moment it happens, what the response body actually contained. “It doesn’t work” is not a diagnosis, it is a feeling.

Then run the same job from a completely different network that is not a proxy. Tether to a phone. Borrow a neighbour’s wifi. If it fails identically, the address was never the cause and no proxy on earth changes that outcome.

If it runs clean on the phone and fails on your machine, you have learned something worth knowing and the network is implicated. That is the moment buying becomes a decision rather than a guess. Ten minutes, zero dollars, and I would rather you ran it before you paid me than after.

The order I should have refused

A buyer came to me certain a site was blocking him by region. His scraper returned empty pages. He bought lines for a month.

The site rendered its content with JavaScript in the browser and his scraper was reading the raw document. There had never been anything in what he was fetching. Where he fetched it from was irrelevant.

I had enough in front of me to catch it. He told me in his first message that the responses came back empty with a 200 status. Blocks do not usually look like that. A block announces itself.

I took the order anyway, because he was confident and because selling somebody a line is easier than arguing with a customer about his own stack.

I gave him the month back once it surfaced. He is still a customer and these days he buys lines for something lines are good at. That sale cost me more hours than any sale I have made.

What a straight answer sounds like

Undetectable. Ban proof. Guaranteed. Works with every platform. Nobody can sell you any of those, because none of them sit inside the seller’s control.

The answer worth trusting is duller. This removes one variable from your setup, and here is how you check whether that variable was the one hurting you. If you have run the check and the address is what is left, real Singapore carrier SIMs are what I run.

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