How to Hide Your Number to Protect Your Privacy?

The numbers speak for themselves: with 73% of internet users facing scams in 2025 and over 210,000 cases of identity theft annually, handing out your real phone number left, right, and centre has become risky. Sometimes, you just need to send an anonymous text to protect yourself or try out a service. Not to commit fraud, but to stay in control of your data.

Here, I'll explain exactly how to do it, with methods that actually work and a comparison table to help you make sense of it all.

The #31# myth: why hiding your number natively doesn't work for texts

We've all thought it at some point: dial #31# before the recipient's number to send a text from a hidden number. It's a very common mistake.

In reality, the #31# code is a network command designed solely for voice calls (the GSM protocol). Texts, on the other hand, travel over different protocols (SS7 or IP), and their technical architecture requires the sender's ID to be transmitted every time.

In short, if you type #31# before an SMS, your message will be sent, but your number will be clearly displayed on the recipient's screen. Let's look at the real solutions instead.

The 4 methods for sending an SMS without revealing your identity

Method 1 — Use an anonymous SMS web service

This is the easy option. Many online platforms allow you to send a free anonymous SMS directly from your browser. You type in the number, your text, and the message is sent via a generic number. There's nothing to install.

However, you should be aware of the drawbacks:

• Often restricted destinations: many of these sites only cover North America.
• One-way communication: the recipient gets the message, but they generally can't reply to it.
• A poor user experience: expect interfaces loaded with advertising banners.
• The personal data issue: your IP address is always logged, and some free sites monetise your browsing data.

In summary, it's a handy method for an immediate, one-off need. For more regular or secure use, it's better to move on to the following methods.

Method 2 — Get a disposable phone number

A disposable phone number is the modern equivalent of a prepaid SIM card. It's a temporary number (active for a few minutes or a few days) that isn't linked to any of your identity documents.

This is particularly useful in several situations:

• Validate an account creation (social networks, e-commerce) without giving your personal number.
• Chat with a stranger after responding to a classified ad (e.g., DoneDeal, Vinted) while keeping a safe distance.
• Test an application that requires an SMS verification code.

The use of these numbers has become widespread, to the point that some VPN providers now include disposable number generators in their offerings. Technically, these numbers rely on the Cloud and VoIP, which makes them very responsive.

A few things to keep in mind:

• It's perfect for one-off use (like receiving a PIN code).
• The lifespan is short, so don't use this number for important contacts.
• Some systems have become strict: many banks and government agencies detect and block the use of VoIP numbers.

Method 3 — Use a virtual number (VoIP)

Here, we're stepping things up. The virtual number for SMS is a real second phone number, stable over time, and managed through an app on your smartphone.

To understand the difference clearly:

• The disposable number is designed to be used once and then discarded.
• The virtual number is designed to last, allowing you to separate your professional and personal lives or maintain a separate digital identity.

The main advantage is that you can both send AND receive SMS anonymously (from the other person's point of view). Well-known apps like Onoff, Burner, or Google Voice dominate this market. Here's what you need to know if you're in Ireland:

This is the most suitable option if you're looking to send texts with another number on a regular basis.

Method 4 — Secure messaging apps with a disposable number

This is the approach for privacy purists. The idea is to combine the anonymity of a number with robust encryption. You get a disposable number, and use it solely to create an account on Signal or Telegram.

Why it's effective:

• End-to-end encryption: the content of your messages is mathematically unreadable to anyone, including the app's publisher.
• Disappearing messages: you can set up (especially on Signal) a self-destruct feature for your chats after they've been read.

This method requires a bit more setup, but it offers top-level digital security without exposing your personal number to your contacts.

Comparison table — Which solution is right for your needs?

To put it simply: if you just want to send a quick message, a free web service will do the job. If you need a proper two-way conversation, you'll need to turn to a virtual number or a dedicated solution like SmsJuice.

Our solution: send an anonymous SMS in France in under 2 minutes

To address the limitations of existing tools, we have designed an approach that prioritises ease of use without compromising on privacy.

It's a straightforward process, in 4 steps:

1. Personalise the sender: choose a name or leave the field blank.
2. Type your message.
3. Enter the recipient's number.
4. Confirm sending — all without having to create an account or provide any personal information.

What makes our tool different:

• The interface is clean, without intrusive ads.
• We do not sell your browsing data.
• Routing is optimised for all French operators.
• The tool is strictly GDPR compliant.
• Receiving replies is possible, as we use our own virtual number infrastructure.

We wanted to create a trustworthy alternative in this market. You can use our service for a free and anonymous SMS (or via our freemium options), with the assurance that your data is not the product.

It's a tool designed to send an SMS anonymously in France, within a legal framework that respects your privacy.

Try SmsJuice — send anonymous SMS with no sign-up

What the law says: anonymity, legal limits, and responsibilities

Let's be clear: total anonymity doesn't exist on the internet when faced with the law. Sending platforms are legally required to keep IP addresses and connection logs. In the event of a judicial warrant (during a criminal investigation), this information is handed over to the authorities.

Identity protection is a serious matter. With a recent 700% increase in identity theft in France, wanting to remain anonymous is a perfectly legitimate right. But this right should not be used as a shield to commit abuse.

What is completely legal:

• Protecting your privacy when interacting with a stranger (e.g., on classifieds sites, dating apps).
• Testing the reliability of an online service without giving your real number.
• Playing a harmless prank on an acquaintance.
• Discreetly checking in with a former employer or partner.

What is strictly illegal (and punishable under the Penal Code):

• Harassment, whether psychological or sexual (Article 222-33-2-2 of the Penal Code).
• Threats, insults, and intimidation (Articles 222-17 et seq.).
• Fraud and phishing attempts (Article 313-1).

Conclusion — Protect Your Privacy Today

Staying in control of your privacy and digital security has become essential. If you need to communicate without exposing your details, try SmsJuice to send an anonymous SMS for free, easily and with no sign-up required.