What is regular chat, and why would a WhatsApp-type app have been suggested?
Is regular chat texting?
“Regular chat” like the one that is installed with the phone when you buy it. Not sure what Apple calls it but on my google phone it is simply called “messaging.” Every phone has it installed and the people you are wanting to keep in touch with won’t have to download, install, and get an account to use whatsapp or signal.