voicemail number change 'failed to read data' 'voicemail number change unsuccessful'

[neuronetv]

I have a slaxy S8 and I don't know why I'm getting this error when trying to change the voicemail number. I'm with 02 and trying to change it to 901. Any ideas?

 

[neuronetv]

bump.
anyone?

 

[mary beth hale]

bump.
anyone?

I thought the voicemail number was set by the carrier. Not sure. Have you tried calling customer support at O2?