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To dial an extension on iPhone: Add a pause after the main number by holding * and entering the extension. Dial extension on Android: After entering the main number, add a 2-second pause in settings, ...

We don't remember phone numbers too often nowadays because our smartphones remember them for us. But what about when you need to dial an extension, too? Rather than write it down in a note, Yahoo!

Having friends with an office job in the typical corporate environment often times means having to dial a desk phone with an extension. As Lifehacker points out, this usually results in having to ...