easy way to tell 903kc vs 902kc

In my home country, my relatives tried to help find me a 903kc, but they could only find 902kc in person. So I'm going to buy one online and ship it to them, and they'll ship it to me! The thing is, they don't know much about flipphones, and I want to check if its 903kc for real, because theres a chance it's fraudulent and I got a 902kc instead.

Does anyone know how to check if its 902kc versus 903kc?
eg. in settings it might say y mobile or softbank.. the imei... etc!
(is using a screen or outershell protector useful? should i get it? also what kind of keychains can be dangled on it? regular or a specific type? hfgksdfg sorry for asking so much))))

second post!! sorry to bother haha ill stop asking so much after i get it!!! cant wait for it :))) maybe ill post an edc !!!!!!