how can I place a WhatsApp button in the popup of the device to send a WhatsApp to the device using the phone field of the device?
Please do not duplicate your questions.
This is not available as a built-in option in Traccar. If you want a WhatsApp button in the device popup, you will need to modify the web interface source code and add the functionality manually.
how can I place a WhatsApp button in the popup of the device to send a WhatsApp to the device using the phone field of the device?