Trouble Transferring My Number to New iPhone 17

I’m having issues transferring my number from my old iPhone to my new iPhone 17 and would appreciate some help.

I currently use (339) 208-**** on my iPhone 15, and I want to transfer this number to my new iPhone 17. However, multiple Xfinity representatives have told me they cannot find this number registered to Xfinity.

That said, when I check on my iPhone 15 under Settings → General → About, the Network Provider is listed as Xfinity Mobile 64.0.1. My service works without issue on this phone — I can make and receive calls, send texts, and use data.

At the same time, my Xfinity account shows a different number, (508) 975-****, which has never been used. I believe this is the free line that was included with my Xfinity Internet plan.

So at the moment:

• The number I actually use (339) works fine on my iPhone 15 but doesn’t appear in Xfinity’s system.

• The unused number (508) shows on my account, but that’s not the one I want to transfer.

This seems like a technical issue on Xfinity’s side that is preventing my number from being properly recognized. I also want to make sure that my 339 number is treated as the included line on my Xfinity Internet plan, not the unused one.

I’ve already spent nearly two hours today between chat and phone support without a resolution, so I’m hoping the forum team can escalate and help me get this corrected so I can activate my new iPhone 17.

Thank you in advance for your support.