Follow these steps to share your Wi-Fi password and let people join your Wi-Fi network using a QR code: Visit QiFi.org in a web browser. Enter your Wi-Fi network's name in the SSID (Service Set IDentifier) field. For Encryption, make sure WPA/WPA2/WPA3 is selected as most routers use this.
Tap Agree & Continue. Tap > Link as Companion Device. You'll see a QR code to be scanned by your primary phone. Open the WhatsApp Business app on your primary phone. Android primary phone: Tap > Linked devices > Link a device. iPhone primary phone: Go to WhatsApp Settings > Linked Devices > Link a Device. Unlock your primary phone.