Make end-to-end encrypted voice and video calls

A voice or video call can feel more private than a text, because nothing is written down. That feeling is often wrong. Whether a call is genuinely private depends entirely on the app you use and how it is set up, and the differences between popular apps are larger than most people expect.

What “end-to-end encrypted” means for a call

End-to-end encryption (E2EE) means the audio and video are scrambled on your device and can only be unscrambled on the devices of the people you are calling. The company running the service, your network provider, and anyone watching the connection in between cannot listen in. Only the ends of the call can.

The alternative, which many business meeting tools use by default, is encryption in transit. Your call is protected on the way to the company’s servers, but the servers themselves can access the audio and video to route it, record it, or transcribe it. That is fine for a routine meeting and wrong for a confidential conversation.

Which everyday apps encrypt calls by default

Here is where the common apps stand as of July 2026. The headline question is always the same: is it end-to-end encrypted, and does that happen automatically or only if you turn it on?

Signal (recommended)

Signal end-to-end encrypts every voice and video call by default, including group calls. Signal built encrypted group calling so that its servers forward each participant’s already-encrypted audio and video without ever being able to decrypt them, and group calls now support up to 75 participants. There is nothing to switch on. This is why Signal is our default recommendation for any call you would rather keep private. See our guide to setting up private messaging to get started.

WhatsApp

WhatsApp end-to-end encrypts every voice and video call, one-to-one and group, using the same underlying protocol as Signal. The content of your calls is well protected. The trade-off is metadata: WhatsApp is owned by Meta and records information about when you call and whom. For the audio and video themselves, though, WhatsApp is a genuinely encrypted option.

FaceTime (Apple only)

FaceTime calls are end-to-end encrypted by default, and Group FaceTime (up to 33 people) is encrypted among the participants’ devices too. Apple states it cannot decrypt them. The catch is that FaceTime only works between Apple devices, so it is a strong choice when everyone is on an iPhone, iPad, or Mac, and no help otherwise.

Telegram

Telegram is the one to watch carefully. One-to-one voice and video calls are end-to-end encrypted, but group calls (and ordinary group chats) are not. Telegram’s regular cloud chats are also not end-to-end encrypted by default. So a private Telegram call means a one-to-one call, not a group. If you rely on Telegram for a sensitive group conversation, it is not protecting the content the way Signal or WhatsApp would.

Google Meet, Zoom, and Microsoft Teams

These are meeting tools first. By default they encrypt in transit and at rest, not end to end, which means the provider can access the media.

• Google Meet offers optional end-to-end encryption for calls, but as of July 2026 that option is limited (for example, calls between personal Google accounts on the newer Meet app). Standard scheduled meetings are not end-to-end encrypted.
• Zoom does offer end-to-end encryption, but it is off by default and has to be enabled by the host on a paid plan. Turning it on also disables features such as cloud recording, live transcription, and breakout rooms, which is exactly why it is often left off.
• Microsoft Teams offers optional end-to-end encryption for one-to-one calls, again off by default.

The practical takeaway: treat a standard Meet, Zoom, or Teams call as a room the provider can enter. That is acceptable for most meetings and the wrong tool for a confidential one, unless you have deliberately turned E2EE on and confirmed it is active.

How to verify a call is really private

An app claiming encryption is not the same as proving no one is in the middle. The strongest apps let you check.

Compare safety numbers on Signal

Every Signal conversation has a safety number (a code, also shown as a QR code) that is unique to you and the other person. If you compare it and it matches, either in person or over another trusted channel, you have confirmed there is no attacker secretly sitting between you. You do not need to do this for every call, but it is worth it before your most sensitive ones. Open the conversation, tap the contact’s name, and choose View Safety Number.

Look for the verification indicator

Telegram one-to-one calls show four emoji to both people; if they match, the call is verified end to end. FaceTime and WhatsApp calls are encrypted automatically, so the main thing to confirm is that you are actually calling the right person and not an impostor who has spoofed a familiar name.

Confirm E2EE is on in meeting tools

If you must use Zoom for something sensitive, the host should enable end-to-end encryption in advance, and every participant can then check for the green shield with a padlock in the top-left of the meeting window. No indicator means no end-to-end encryption.

When a plain phone call is the wrong tool

A normal cellular or landline phone call is not private in the way an encrypted app call is. Ordinary calls travel over the carrier networks and the aging SS7 signalling system, which was built without real security and can be abused to intercept calls and texts or track a phone’s location. Your carrier can also be compelled to hand over records of who you called and when.

So a regular phone call is fine for everyday logistics and the wrong choice for anything confidential. When it matters, place the call inside Signal, WhatsApp, or FaceTime instead of dialing the number directly. To understand why the number itself is sensitive, see what your phone number reveals about you.

You do not need every app. Pick one that encrypts by default, learn how to verify it, and route the conversations that matter through it.