How to Hide Your Number to Protect Your Privacy?

The numbers speak for themselves: with 73% of French 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 test a service. Not to commit fraud, but to stay in control of your data.

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

The #31# Myth: Why Natively Hiding Your Number Doesn't Work for Texts

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

In reality, the #31# code is a network command designed only for voice calls (the GSM protocol). Texts, on the other hand, travel via different protocols (SS7 or IP) where the 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 need to be aware of the downsides:

• Often restricted destinations: many of these sites only cover North America.
• One-way communication: the recipient gets the message, but they usually can't reply to it.
• An average user experience: expect interfaces loaded with ad banners.
• Personal data concerns: your IP address is always logged, and some free sites monetise your browsing data.

In summary, it's a handy method for a one-off, immediate need. For more regular or secure use, it's better to use 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:

• Verify an account creation (social media, e-commerce) without providing your personal number.
• Chat with a stranger from a classified ad (e.g., Trade Me, Vinted) while keeping a safe distance.
• Test an app 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 packages. Technically, these numbers rely on the Cloud and VoIP, which makes them highly 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 — Using a virtual number (VoIP)

Here, we're taking it to the next level. A virtual SMS number is a real second phone number, stable over time, and managed through an app on your smartphone.

To understand the difference:

• A disposable number is designed to be used once and then thrown away.
• A virtual number is designed to last, allowing you to separate your work and personal life or maintain a separate digital identity.

The main advantage is that you can both send AND receive texts anonymously (from the recipient's point of view). Well-known apps like Onoff, Burner, and Google Voice dominate this market. Here’s what you need to know if you are in France:

This is the best option if you're looking to send texts from another number regularly.

Method 4 — Secure messaging apps with a disposable number

This is the privacy purist's approach. 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 developer.
• Disappearing messages: you can set up (especially on Signal) a self-destruct for your chats after they've been read.

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

Comparison table — Which solution is right for you?

To keep it simple: if you just want to send a quick message, a free web service will do the trick. If you need a real two-way conversation, you’ll need to turn to a virtual number or a dedicated solution like SmsJuice.

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

Faced with the limitations of existing tools, we've designed an approach that prioritises ease of use, without compromising on privacy.

It's a straightforward process, in 4 steps:

1. Customise 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, with no intrusive ads.
• We don't sell your browsing data.
• Routing is optimised for all French carriers.
• 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, anonymous text (or through our freemium options), confident that your data is not the product.

It's a tool designed for sending a text anonymously in France, within a legal framework that respects your privacy.

Try SmsJuice — send anonymous texts, no sign-up required

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

Let's be clear: total anonymity doesn't exist on the internet when it comes to the law. Sending platforms are legally required to store IP addresses and connection logs. In the event of a legal 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 shouldn't be used as a shield to commit abuse.

What is perfectly legal:

• Protecting your privacy when messaging a stranger (e.g., on classified sites, dating apps).
• Testing the reliability of an online service without giving out your real number.
• Playing a harmless prank on someone you know.
• Discreetly sounding out 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 and following).
• Fraud and phishing attempts (article 313-1).

Conclusion — Protect your privacy today

Maintaining control over your privacy and digital security has become essential. If you need to communicate without exposing your identity, try SmsJuice to send a free anonymous SMS in New Zealand, easily and with no sign-up required.