We no longer have a phone.
We opted out of a true "landline" phone, when the rental for it and call charges whether packaged or piecemeal just got to silly money.
We however retained a physical phone so our decades old number survived and we could receive calls along with making outgoing calls, and in particular the lengthy international calling our circumstances needed.
We simply transferred our landline number onto a VoIP phone piggy backed on our internet, at a "rental" cost for that of £1.20 pm, with calls even to our international destinations of a 1.5p/m.
Recent changes have greatly improved our direct mobile phone connectivity, and we could use calling via our PC but my wife in particular is more comfortable using what for all intents and purposes is a normal landline handset.
Our VoIP service is with Andrews & Arnold and its being very good, with a consistent clarity BT's analogue, it replaced, rarely had.
Still on copper as our only viable option out here, but fibre to the box which is in eye sight just down the lane.