SMETS1 meters are not transferable if you change suppliers. SMETS2 are transferable
Some suppliers still do not facilitate SMART meter readings
SMART meters do not reduce your usage, they just show you how much you are using.
When I last changed suppliers about 6 months ago, no suppliers offered or planned to offer discounts for SMART meter use.
SMART meters do not work in every home, they are dependent on signal strength, they don’t use your WiFi (that would be a security nightmare),
My SMART meter was a piece of pooh and got thrown, didn’t link to the supplier, so I had to send readings anyway.
A prime example of the technology not keeping up with the idea.