smarty on a dumb phone

Hi PhilipMo_232714 

You can check using this link if a handset is compatible with the SMARTY 4G (VoLTE) network.
https://help.smarty.co.uk/en/articles/8985136-checking-if-your-device-is-4g-volte-compatible

There aren't many non-smartphones that support VoLTE but I have found this website that may help in choosing a handset (just remember to check if it is on the SMARTY Approved handset list for it to work) and add the filters of 'VoLTE Support' and 'Region'...
https://www.dumbphones.org/
There is also these.....
https://www.goodhousekeeping.com/uk/product-reviews/tech/g33440915/best-dumb-phones/
https://www.androidcentral.com/phones/best-dumb-phone

You can also do your own research using a search term like 'dumb phone that supports VoLTE UK' or similar.

Good luck x