So I finally convinced my mother to buy a 'smart' phone and we settled on the Lumia 520 but we're having some troubles as of today.
When she tries to send an SMS to my partners iPhone (Vodafone) they always fail with a SMS error 69.
She can send a picture message fine, but text only always fail.
Mum's on Telecom and can message my S4 (also on telecom) no problem.
Thoughts?