SIM Mobile Proxies: One Real Carrier SIM in One Modem, Rented by the Month

SIM mobile proxies from SimProxies are the simplest kind of mobile proxy there is: one real US carrier SIM card, sitting in one modem we run in an American city, rented to one customer by the month. There is no pool behind it and no second tenant on the same card. The IP your traffic leaves on is the address the carrier assigned to that SIM, the same kind of address a phone in that city has, and for the length of your term that SIM answers to you alone. This page explains what a SIM proxy is and is not, whose SIM you are using, why we bill monthly, how rotation works on a single card and what happens when you need the line in another city.

SIM rental by the month, week, day or hour

The month is the plan we built the service around and the one we price best. The shorter terms are the same SIM for a shorter stay.

Create an account Plans on the homepage

A SIM proxy is a card, not a pool

A great deal of what is sold as a mobile proxy is a crowd: thousands of handsets running an SDK, lent out a few requests at a time, each address shared with whoever else happens to be routed through it. A SIM proxy is the opposite. It is one physical card from AT&T, T-Mobile or Verizon, inserted in one physical device, with one proxy port pointed at it. Whatever you do on that port, you do on that card, and nobody else does anything on it.

That is why people who run accounts for months choose a SIM over a pool. The address history belongs to you. If the card has been quietly logging into the same three accounts from the same metro for six weeks, that is the pattern the platform sees, because that is what happened. A pool cannot give you that, however clean its addresses look on the first day.

The SIM is on a consumer plan, which is the point. Its address sits behind the carrier's network translation together with real subscribers in that city, so a block on that address would hit real phones, and platforms are slow to issue one.

Numbers help here. A pool provider may advertise millions of addresses, but what reaches your target is whichever of them you were handed for the last few requests, along with the history every previous user left on it. A SIM gives you one address at a time, each one yours from the moment the carrier assigned it, and the full history of the card during your term is nothing but your own traffic.

Whose SIM it is

The card is ours. SimProxies buys the SIMs from the carriers, pays the plans and owns the modems, routers and phones they sit in. You are not borrowing a stranger's phone through an app, and you are not reselling a line from another provider with an extra hop in the middle. When you rent a SIM for a month it is reserved to your account for the whole month: the same card, in the same device, on the same carrier, from the first day to the last.

We do not pull a SIM back during a term, and we do not slot a second customer onto a card between your sessions. The dedicated part is not a tier you pay extra for; it is the only way the service works.

Why the month is the plan we price around

A SIM pays for itself over weeks, not hours, so the monthly plan is where we put the best price: $65 for thirty days on 4G LTE, $75 on 5G, with auto-renew optional so the card simply stays yours for the next month if you leave it on. A week costs $28 or $31 and a day $5 or $6, and both exist for tests and short projects rather than as the main offer.

Monthly billing also matches how the SIM behaves. Carriers hold an address on a card for long stretches when nothing forces a change, so a card rented by the month settles into a steady identity. Accounts created on it, warmed on it and run on it all come from one place, which is what account work asks for.

If you want to see a SIM before you take it for a month, the hourly plan is the way in: $2 for the first two hours on 4G and $2 for each hour after, $3 and $3 on 5G, up to four hours per order, never auto-renewed. Keep the same SIM for the full day and the hours you paid come off the day price.

Picking the carrier your SIM lives on

At checkout you pick AT&T, T-Mobile or Verizon, and 4G LTE or 5G. The card stays on that network for the whole term; a Verizon SIM does not quietly become a T-Mobile SIM after a rotation. Which carrier suits you depends on the metro and on the target, and the city pages linked below describe what each network looks like on that rack.

Speed on a SIM is the speed of its network: a 4G LTE card runs 20 to 45 Mbps on our racks, a 5G card 50 Mbps and more with good signal, and data is unlimited on every term, so there is no monthly allowance to watch.

Carrier choice also decides how the address geolocates. Each network registers its ranges differently, and the city pages note how a given carrier's addresses in a given metro resolve on the common geolocation services, so a SIM meant to look like Houston reads as Houston to the sites that check.

Rotation when there is only one card

One SIM does not mean one address. When the modem reconnects to the carrier, the carrier hands the card a new address from its pool for that metro, and that is what a rotation is. You trigger it from the dashboard button, from your rotation link, through the API or on a timer you set, as often as you like, with no cap on the count. The new address is from the same carrier in the same city, because it is the same card in the same place.

Do nothing and the card keeps its address, which is a sticky session. For most people on a monthly SIM, sticky is the normal state and rotation is the exception they use between batches of work. Only you can trigger a change on your SIM; there is no other tenant to rotate it under you.

Taking the SIM to another city

The card itself cannot travel, but your plan can. From the dashboard you move the line to any other metro we run, free, and the move is self-service: your plan transfers to a SIM on the rack in the new city, on the same carrier if it is in stock there, and the new host and port appear in a couple of minutes. Nothing about your term changes and there is no fee.

That makes a monthly SIM less of a commitment than it sounds. Rent a New York card, finish the job early, and spend the rest of the month on a Miami one.

Moves are also the answer when a carrier is out of stock in your city: take the same carrier in the nearest metro that has it, and move the plan back when stock returns. Nothing is lost on the way, since the term keeps running and the balance is untouched.

Three devices a SIM can sit in

Every plan is one SIM in one device, and you choose the device at checkout. A USB modem holding your SIM is the simplest dedicated line we run and the one most monthly customers choose. A cellular router holding your SIM gives the same carrier address with hardware built for long uptime, for lines that must not blink for a month. A real Android phone holding your SIM is the closest match to an ordinary subscriber, for work that must look like a handset end to end.

Each device exposes HTTP(S) and SOCKS5 with UDP on its own port, with access by username and password or by whitelisting your IP, and it drops into any browser, phone, tool or script that takes a standard proxy.

Eight cities, and how to rent a SIM

Racks run in Boston, New York, Miami, North Carolina, Chicago, Houston, Phoenix and Los Angeles. Create an account at the dashboard, add balance by card, PayPal, crypto, Zelle or wire, and pick the term, the network, the city, the carrier and the device. The SIM is assigned and live the moment payment clears, with the credentials on screen. Within the first twenty-four hours of a first order, if the SIM does not work for your target, write to support and we refund it. Every purchase also works from the mobile app and from our Telegram bot, on the same balance.

Support is also a person. Email or the Telegram bot reaches someone who can check a carrier's stock in a city, tell you which term suits the job and help with setup, at any hour.

SIM mobile proxies, explained