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How can I DELETE MY OLD CELL PHONE NUMBER

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I can't get my old cell phone number out of my settings.I need a code to reset my password.I have put my new phone number in but keep getting my code sent to the old cell.Please help!!

I can't get my old cell phone number out of my settings.I need a code to reset my password.I have put my new phone number in but keep getting my code sent to the old cell.Please help!!

被選擇的解決方法

How is that related to Firefox browser support?

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選擇的解決方法

How is that related to Firefox browser support?