Dear old Ma has been migrated from copper to wireless landline.
Reading documentation she had at hand, it costs $50/m, with mobile & 'toll calls' incurring a p/minute charge.
Also in there was a statement "you will not change the sim card in the modem"
Out of pure curiosity, what would happen if I were to pop a Skinny sim with a $17 prepay plan in?
She has a St John medical alarm too if that will have any bearing
She has tried a mobile phone, too confusing - fair enough.
Thanks for your time