I’d say it was a “smart phone” and not a “smartphone”. It, and other Symbian phones like it, existed before the iPhone came out and made touchscreen smart phones a thing. Basically a PDA + Phone.
Even Samsung had a colour touchscreen before iPhone but no one saw it as the first “smartphone”. The iPhone was the ‘first’ true smartphone though you could argue several others before it were smartphones. But I’d class them as “smart phones”.