- WhatsApp can be activated on a device without a SIM card as long as another phone is available to receive the verification code.
- It is possible to link a second mobile phone as a complementary device to use the same account on two terminals simultaneously.
- Virtual numbers and the web version are viable alternatives for those who do not have a traditional physical line.
I'm sure it's happened to you, or you know someone in this situation: you have a mobile phone lying around the house, maybe an old one or one you bought for work, but it doesn't have a SIM card inserted. The first thing that comes to mind is that WhatsApp is impossible to use without an active line, since the app asks for your phone number as soon as you open it. However, there's a little secret that many people overlook: the SIM card doesn't have to be physically in the device you want to chat with.
The key to all of this is that WhatsApp doesn't check if your phone has a mobile network connection; it simply needs to verify that the number belongs to you . As long as you have a way to receive that security code, whether on another phone, a landline, or through a virtual service, you can use the app on a phone that only works with Wi-Fi. Below, we'll tell you all the possible ways to do this, from the simplest methods to some slightly more elaborate tricks so you don't get left without communication.
The essentials before starting
For this to work, there are a couple of things you need to be aware of. First, it's essential that the SIM-free device is connected to a stable Wi-Fi network, since without mobile data the phone relies entirely on wireless internet to send and receive messages. If you leave home and lose the Wi-Fi signal, the app will stop working immediately.
Another crucial point is the verification process . WhatsApp will always require a valid phone number to create an account; there is no official option to register with just an email address. Therefore, you'll need another mobile phone with a working SIM card that can receive the confirmation SMS or call, even if only for a couple of minutes, to activate the account.
Method 1: Verification via another device
This is the fastest way and the one most people use. It doesn't matter if phone A doesn't have a SIM card, as long as phone B does and can receive messages. The steps are very simple:
- Download the official app from the Play Store or App Store. mobile phone without SIM.
- When you open it, enter the phone number of the SIM card that you have in the other mobile.
- WhatsApp will send a verification code via SMS to the phone that has the active line.
- Copy that code and enter it into the mobile phone without a SIM card. And that would be it!
Keep in mind that if you activate the full account on the new device, the session on the original phone will be automatically closed , as WhatsApp typically only allows one active account per number in the main app. If you're concerned about security, remember to protect your WhatsApp account to prevent unauthorized access.
Method 2: Linking the mobile phone as a complementary device
If you want to use WhatsApp on two phones simultaneously without either one being logged out, the best option is paired device mode . This is ideal for those who have a primary phone and want to use a second phone like a tablet.
To do this, install WhatsApp on the phone without a SIM card and, instead of entering your number, look for the "Link as companion device" option in the three-dot menu . This will generate a QR code on the screen. Now, go to your main phone, open Settings > Linked devices , and scan the code from the other phone. This way, the phone without a SIM card will mirror your main phone and won't need its own SIM card.
Method 3: The use of virtual numbers and VoIP
If you don't have a second physical phone, you can use technology. There are apps like Hushed or VoIP services that let you rent a virtual number . These numbers work over the internet and can receive verification SMS messages.
The process involves subscribing to the service, obtaining a phone number (for example, from the United States or the United Kingdom), and using that number when registering for WhatsApp. You'll receive a confirmation code within the virtual number's app and can then activate your account. However, be aware that many of these services require payment after a short trial period, and some virtual numbers may cause WhatsApp to block or suspend your account for security reasons.
Alternative options: Landlines and WhatsApp Web
It used to be very common to use your home phone number. Although WhatsApp has greatly restricted this, in some cases it still works if you use the "Call me after SMS delivery fails" option. An automated voice will dictate the code to you over the phone, allowing you to validate it on your mobile phone without a SIM card.
If you prefer not to install anything or you're using a tablet, you can always use WhatsApp Web . Just open your browser (Chrome or Safari), enable the option to request a desktop site , and scan the QR code from your main phone. On the iPad, you can even add a shortcut to your home screen to make it look like a regular app, although the experience is less smooth than the native app, so you might need to clear the WhatsApp Web cache to optimize it.
As we've seen, it's entirely possible to chat without a SIM card in the device, either by using verification on another phone, linking the account as a secondary device, or using virtual numbers. The only essentials are an active Wi-Fi connection and a valid mobile phone number to bypass the initial security code.
