How does the new Moto Z4 compare?

How does the new Moto Z4 compare to my three-year-old Moto Z Force?
I am starting to have some issues with the MZF. Mainly after talking on it for several hours in my job, everyone says "you're breaking up" when I have 5 bars of 4G.
Should I jump to the Moto Z4 and if I do what will I gain?

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