Right now, I have an iPhone 6S Plus on T-Mobile, and my wife has a LG VX5200 on PagePlusCellular.

I'd like to switch us both to Xfinity like so:
  1. Port my T-Mobile number to a new iPhone XS (which I'll buy from Xfinity)
  2. Activate my old iPhone 6S Plus on Xfinity and port wife's PagePlus number

Will I lose anything switching from T-Mo to Xfinity?

Should I expect any issues getting my wife's number activated on my BYOD iPhone 6S Plus?