Brand names are do like RCA, Motorola, Uniden, VTech, Samsung, Panasonic, Philips, Sharp, and Xiaomi. All of these major brands who makes cordless phones with WhatsApp.
Yes, major brands such as RCA, Motorola, Uniden, VTech, Samsung, Panasonic, Philips, Sharp, and Xiaomi make cordless phones with WhatsApp.