The term "burner" inherits its mystique from older prepaid SIM cards that you could buy with cash and discard after use. That era is largely over. SIM card registration laws now apply in most of the EU, much of Asia, Australia, and parts of Latin America. In the U.S. and Canada, prepaid SIMs are still available without ID at most retailers, but the carrier still records the IMEI of every device that uses them, and the cell tower data ties your physical location to whoever else was there at the same time.
Modern "burner" services occupy a different niche. They're not anonymous — they require payment and usually a real email address. What they are is compartmentalized: a number you give to dating apps, classifieds buyers, or web signups so your primary number doesn't end up in marketing databases, data broker dumps, and inevitable breaches.
The four real use cases
Before picking a service, decide which of these you're actually solving:
- Compartmentalization — a separate number for low-trust contexts (Craigslist, Tinder, signups) so your primary doesn't leak. Anonymity not required.
- Account verification — receiving SMS codes for services you don't want associated with your real number. Some services explicitly block VoIP numbers from verification.
- Travel and roaming — a number in another country to avoid international rates or to maintain presence while abroad. This is mostly an eSIM problem, not a burner problem.
- Genuine anonymity — a number that cannot be traced back to your identity. Hard to achieve in 2026. Requires significant operational discipline.
MySudo
MySudo is the most polished of the consumer burner services. It gives you multiple "Sudo" identities, each with its own phone number, email address, and optionally a private browser. Numbers are real US/CA/UK numbers that can send and receive SMS and calls. The app is published by Anonyome Labs, which positions itself as a privacy-focused company.
The strengths: clean interface, working calling and SMS to most networks, persistent numbers that don't churn between users, and reasonable cross-platform support. The model is subscription-based, which aligns the company's incentives with users rather than advertisers.
The limits: numbers are tied to your billing account, which is tied to a payment method. MySudo can be legally compelled to identify a Sudo number's owner. Privacy from advertisers and casual lookups — yes. Privacy from law enforcement — no.
Hushed
Hushed is similar in concept to MySudo but uses a different pricing model — pay-per-line, with options for short-term numbers (7 days) up to lifetime plans. Numbers are sourced from real telco partners and work for most use cases.
Hushed's main differentiator is the breadth of country coverage — they offer numbers in 60+ countries, which makes it useful for travel and for receiving codes from services that geofence verification. The downside is the same as MySudo: it's a business with payment records, and numbers can be linked to the account that purchased them.
Google Voice
Google Voice has been around since 2009 and remains free for U.S. residents with a U.S. forwarding number. The trade-off is obvious: every text and call goes through Google, which means it's logged, indexed, and (per Google's stated policies) subject to legal process under U.S. law.
Google Voice is the worst option for privacy because the whole point of the service is metadata aggregation. But it's the best option if your only goal is compartmentalization and you're already deep in the Google ecosystem. It will not work for many SMS verification flows because services routinely flag Google Voice numbers as VoIP and refuse to deliver codes.
Prepaid SIMs
The traditional burner. In jurisdictions that don't require ID for activation (still the U.S. and Canada), a prepaid SIM bought with cash gives you a real cellular number with normal SMS verification behavior. Costs vary but are typically $20-40 to start plus monthly top-ups.
The privacy properties are mixed. Activation is anonymous, but the moment you put the SIM in a phone, that phone's IMEI is registered with the carrier. If that phone also contains your personal SIM, or has previously contained one, the carrier has a record linking the two. If you carry the burner with your personal phone, the cell tower data co-locates them constantly.
A "burner" phone carried in the same pocket as your primary phone is not anonymous. The two devices ping the same towers at the same times. Even without any explicit account link, the colocation pattern is a high-confidence identifier — and cell carriers retain this data for years.
Data-only eSIMs
A newer option: services like Airalo, Holafly, and similar providers sell data-only eSIMs in dozens of countries. The eSIM gives you mobile data in the destination country; you make calls and send messages over encrypted apps like Signal or Haven rather than via the cellular voice network.
For travel and roaming, this is dramatically better than getting a local SIM with a local number. You don't need a "burner number" at all — you have a real identity in your encrypted messaging app and just need network connectivity. Costs are often a fraction of carrier roaming fees.
For account verification, data-only eSIMs do not help — you still need an SMS-capable number for that.
What to pick
| Use case | Best fit |
|---|---|
| Separate number for signups and classifieds | MySudo or Hushed |
| SMS verification codes for services that block VoIP | Prepaid SIM (where legally available) |
| Travel data, calls and messages via encrypted apps | Data-only eSIM (Airalo, etc.) |
| Light compartmentalization, already on Google | Google Voice (with eyes open) |
| Genuine anonymity from a sophisticated adversary | None of these are sufficient |
The thing the marketing won't tell you
Phone numbers as identifiers are fundamentally broken for privacy. Every commercial burner service exists in a regulatory environment where it can be compelled to identify customers. Every prepaid SIM is tied to an IMEI and a colocation history. There is no commercial product in 2026 that provides phone-number anonymity against a determined investigator.
What burner numbers can do is reduce the size of your attack surface. Your primary number stays out of breaches. Spam goes to a number you can throw away. Strangers on dating apps don't get a permanent identifier they can search against people-finder sites. These are real benefits, and they're worth paying for. They are not the same as anonymity, and conflating them leads to false confidence.
For communication itself — where the burner number is only a means to an end — the better answer is to move the communication to a channel where the identifier is decoupled from your phone number entirely. Signal's username feature, contact-discovery-resistant messengers, and email-based identities like Haven all let you give out an identifier that isn't a phone number at all. That's the durable fix. Burner numbers are a patch on a broken system.