quickymart:coffeebaron:I installed a Vodafone version Cel-Fi at my office and locked it to 4G. Now I get nice VoLTE calling there :)
Do you mean this one?
https://www.cel-fi.co.nz/cel_fi_pro_vodafone_booster.html
Would love to improve my Mum's reception at her place but I think the 4G where she lives is 700, so that probably wouldn't help her situation :(
The model I installed was the Cel-Fi Go and is LTE700 capable. Feel free to get in touch if you need more info.