Rotary cellphone to FR ?

[WilfordJ]

hello ,

First of all, please forgive my bad English, I come from France

I have always liked this kind of project and I came across your "rotary cell-phone", which I find really original and surprising and I would like to know if I were to order it one day if it was compatible with the French telephone networks...

we operate at home, in 3G (2028) and 4G currently

[WilfordJ]

and I would have liked to know:
How does this read in terms of battery and network?