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Samsung Galaxy Note10
Android 9.0
1 Find "Message Centre"
Press the message icon.
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Press the menu icon.
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Press Settings.
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Press More settings.
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Press Text messages.
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Press Message Centre below the required SIM.
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2 Set the message centre number
Key in +6421600600 and press Set.
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+6421600600
3 Return to the home screen
Press the Home key to return to the home screen.
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