How to delete number from mobile phone but not sim card

I want to delete numbers stored on my phone handset and not on the simcard- how do I do that? I don't want to find that when the simcard is in another phone all the numbers have disappeared.
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More about delete number mobile phone card
  1. Dear can you say phone name with model then I suggestion you more easily.
  2. Take out the card, delete any names left on the phone.
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