Do both parties have to have WhatsApp to call?

Do Both Parties Need WhatsApp to Make a Call?

Historically, yes. Both the caller and the receiver needed the app and an active account to connect. But theres one hidden cost to these free calls that catches many international travelers off guard - Ill reveal what it is in the data usage section below.

The core structure of the platform relies on Voice over Internet Protocol (VoIP) routing through proprietary servers, not standard cellular networks. This closed ecosystem meant that reaching non-users was impossible for over a decade. Rarely does a single software update change user behavior so drastically. The new link-based system fundamentally shifts the platform from a closed messenger into an open meeting tool.

The Game Changer: Joining via Web Browser

Guest Calls - currently in beta testing and rolling out globally - remove the app barrier entirely for the recipient. The platform boasts over 3 billion monthly active users globally in 2026, yet millions still prefer other tools or lack smartphone storage.

This feature bridges the gap. The host generates a unique URL from the Calls tab and sends it via email or SMS. When clicked, the recipient joins via a standard web browser (usually Safari or Chrome) on their phone or desktop. End-to-end encryption remains intact through a temporary session key, keeping the conversation secure. The host still retains control and must approve unregistered guests before they enter the room - ensuring absolute privacy.

Standard Account Requirements and Limitations

If you arent using the new guest links, traditional rules apply. Both devices must be registered with an active phone number. In regions like the UK, 92% of iOS devices and 88% of Android phones have the app installed, making app-to-app connections feel almost universal. But theres a catch. If the person you are trying to reach has uninstalled the application, your do both parties have to have whatsapp to call question becomes highly relevant because your call will simply ring on your end indefinitely without connecting.

When I first managed a remote team, I made the mistake of assuming everyone lived in the same digital ecosystem. I spent three days trying to call a contractor who had quietly deleted his account. Total waste of time. You need to confirm their active status first.

Can You Call a Regular Phone Number?

Many users wonder if they can use the app to dial a standard landline or a mobile number that isnt registered. The short answer is no. The platform operates as a closed network. You can i use whatsapp to call a regular phone number instead? No, you cannot type a random 10-digit number into the dialer and expect a traditional phone to ring.

To bridge this gap, some businesses use third-party VoIP integrations to connect their landlines to a business account. However, for everyday users, if the recipient can you call someone on whatsapp if they don't have the app installed, you must switch back to your phones native cellular dialer. Game over. You simply cannot force a VoIP call onto a traditional PSTN network without specialized enterprise software.

Data Usage and International Connectivity

Here is that hidden cost I mentioned earlier: data roaming fees. While the platform does not charge per-minute fees, calls are never entirely free. Not even close. A standard voice call uses approximately 0.3 to 0.5 MB of data per minute, meaning a one-hour conversation consumes about 18 to 30 MB. Video calls are worse. They pull around 5 MB per minute - up to 480 MB per hour for high-definition streams on strong networks.

I learned this the hard way during a trip to Europe. I left my data roaming on for a 45-minute video call, thinking it was completely free - and returned to a massive carrier charge. Seldom is a free service actually free when roaming. Always use Wi-Fi when traveling to avoid shocking data bills.

Rethinking Communication Strategy

Conventional wisdom suggests consolidating all your communication into one platform to simplify your life. But based on my experience managing remote teams, this creates a massive single point of failure. If the network goes down (and it does) or someone refuses to install it, your workflow breaks entirely. Diversification is actually safer. Having a fallback cellular number or a browser-based meeting link ensures you never miss a critical connection.

Comparing Calling Methods

Standard App Call (Recommended)

• Direct dial through the platform's proprietary contact list
• Uses internet data only, no per-minute charges apply
• Both caller and receiver must have the app installed and active accounts

Guest Link Call

• Host generates a URL and shares it via any external medium
• Uses internet data for both parties; no installation required
• Only the host needs an account; guests join via web browser

Traditional Cellular Call

• Direct dial to a standard 10-digit telephone or landline number
• Incurs standard per-minute rates or consumes voice plan minutes
• Requires active SIM cards and carrier network coverage

Client Consultation Setup

Freelance consultant David spent months trying to force clients onto the platform for international calls. He assumed everyone used it, but three critical introductory meetings failed because older clients were fumbling with SMS verification codes at the last minute. The frustration was real - he almost lost a major contract over a missed 15-minute call.

He realized that imposing a specific app on new clients created unnecessary friction. Let's be honest - convincing someone to download software for a single conversation is terrible onboarding.

He switched to using the new Guest Call links. It wasn't entirely smooth at first - some clients got confused by the browser prompt requesting microphone permissions, causing a few awkward silences and dropped connections.

After tweaking his invitation email to include a quick one-line instruction about browser permissions, the process stabilized. Missed meetings dropped to zero, proving that flexibility usually beats enforcing a single communication channel.