They are giving you a core and a RAN (Radio Access Network). The RAN uses “lightly licensed spectrum,” (CBRS in the US), which I believe is supported in newer iPhones.
That’s enough to make bars appear on your phone. What’s missing is the IMS, which adds traditional calling, voicemail, SMS, etc. However, FaceTime, iMessage, etc. will all work.
That’s enough to make bars appear on your phone. What’s missing is the IMS, which adds traditional calling, voicemail, SMS, etc. However, FaceTime, iMessage, etc. will all work.