Save and Dial Phone Extensions Automatically on your iPhone
Dec 16, 2010 - 4 Comments

You can save phone numbers that automatically dial extensions with your iPhone, here’s how:
- Enter a contact number as usual, let’s say 1-800-000-0000
- After entering the number into the iPhone, tap on the # button to bring up extra options
- Tap on the “pause” button to insert a comma, this causes a pause after the phone number has been dialed
- Now enter the extension you wish to save to the number, let’s say 123
- Your finished result will look like: 1-800-000-0000 , 123
Now when you dial that saved contact from your iPhone address book, it will automatically pause and dial the extension! This is really helpful for customer service numbers or for when adding an office contact to your phone.
Thanks to LifeHacker for the tip!

This is a valuable tip, but it is not limited to the iPhone or any smartphone. I was using this with my dumbphone for the last few years.
This does not work on my iPhone.
I tried the exact procedure. When I dial a voice tells me that this number does not exist.
I don’t know how to produce the blank shown between the comma and the extension.
You’d have to add a contact in order to do that.
Basically;
Add a new contact, and in the numbers field input the number, followed by tapping the “+*#” button. You will now see “pause”. Press it and voila – add the extension.
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