Will my Verizon extender continue to work if I switch to Xfinity Mobile?

We are Verizon customers for cellular, and Xfinity customers for Internet.

We'd like to switch to Xfinity Mobile, but we're concerned about coverage, particularly in our home.

Apparently Xfinity Mobile is a Verizon MVNO, which means that it uses Verizon's cellular infrastructure and radio signals.

The Verizon signal is so weak where we live that we had to buy a Verizon-approved cellular extender (a Samsung SLS-BU10B).  That gives us 5 bars in the house, via our Internet service.

Will the Verizon extender work with Xfinity Mobile?

That's a deal-maker or -breaker for us.