I have tried to contact my granddaughter on my mobile using the stored contact mobile number that I have used for years. The BT voice (it sounds like at least) keeps telling me the number is not recognized. She hasn't changed her number. I have removed her from my contact list and re entered it. Still the same. My husband (with BT mobile too) tried and got the same result. He has an old Samsung phone and I have a fairly new Samsung A20e. Any ideas please? Haven't tried BT direct yet, thought I'd come here first!