Can I swap speakers between two iPhone 6 devices?

Hi. My parents own iPhone 6 - a 16gb and 32gb versions. My dad’s iPhone is a 16gb but he has been facing issues with the touch screen. My mum’s iPhone is a 32gb and off late she has been complaining of not being able to listen to conversations and has to switch on speaker mode to speak. I’m upgrading her to a XR. Is is possible to swap the speakers or mics from the 16gb to the 32gb? If possible, my dad can start using the 32gb and dump the 16gb with touch issues. Kindly let me know or point me to answers in the forum. Appreciate your help. Thank you.