BlackBerry is definitely the strongest king

BlackBerry is definitely the strongest king of full-keyboard phones. Historically, Nokia, Sony, Ericsson, Motorola and other brands have promoted their respective full-keyboard smartphones, but now manufacturers are more focused on cost and product optimization, and differentiation is in front of this. It is not worth mentioning that the full keyboard is obviously no longer suitable for smart phones. The full keyboard smart phone seems to have stopped at the brand outsourcing BlackBerry and ended in KEY-2, and has not even crossed the 5G era.