On Tue, 30 Jul 2019 18:56:31 +0100, The Natural Philosopher wrote:

If you have no mobile phone reception at all but you have an
internet
connection, you can buy a femtocell/picocell.

Do they work if your service provider is an MVNO rather than the
network operator as well?

Why bother? buy a smart phone with wifi calling.

Very few MVNO's offer WiFi calling. The retail service provider side
of the network operators are expensive.

I pay something over £5/month for 1GB and unlimited text/voice on a
monthly basis to an MVNO with unused data refunded. To get a similar
monthly deal from the retail side of the network operator it would be
£15/month, OK that comes with 4GB but as I don't even use 1GB that's
not a lot of use and isn't refunded.

--
Cheers
Dave.