Okay guys, thanks for your replies. I gues Apple don't have this functionality built in their phones.
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Lee_Bo I didn't say that this is something that "Apple need to fix" I am merely trying ti understand whether this is possible in apple or not. It would be nice to have this functionality as it would make dialling a person easier.
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Annie_8plus I haven't turned on Siri because I worry about the conversations that the phone records. I disabled Galaxy in my android phone because it used to just randomly record our conversations and I discovered the place where the recordings were kept.
Everyone, thanks for your help; it's much appreciated.