Welcome to the forum. Returning calls to mobile phones has to be done by selecting the required number from the phone's call history or the contact. If the caller has withheld their number, leaving a message doesn't override that, nor should it.
Try dialling 55 from the message.
Not always true!
Someone called me last week while I was out of range of the network (and had no coverage). When I came out of the shop that I was in I received an SMS message saying that I had a voicemail but THERE WAS NO CALLER's NUMBER.
I called my voicemail and listened to the (very importanat) message but the caller did not tell me her number and I was not offered any means of returning her call.
This is a fundamentally rubbish situation and falls way short of my expectations for a modern mobile telephony service EVEN if it is a "price differentiated service" such s the BT SIM only deal.
Before BT I was with EE and hed the full benefit of visual voicemail on my iPhone. I'm still using the same phone and BT uses EE to provide their mobile service so why the hell can't they just give us visual voicemail!!!
VERY POOR SHOW BT. I will be leaving as soon as my contract finishes
The number was NOT withheld because she rang me back (eventually) and her number came up immediately. I asked her if she had withheld her number before and she said no
maybe you're right Devon_Dave.
I guess we could just carry on making random guesses though. You never know, we might get lucky one day.
Thanks for your valuable contributions.