How to Dial an Extension on iPhone

The basic method: pause, then the extension number

To dial an extension on iPhone, call the main number first, then use the pause feature to automatically send the extension digits after the call connects. Open the Phone app, tap the keypad icon, and dial the main number. Before you hit call, tap the + button (or * on older iOS versions) and hold it until a comma appears — that comma is the pause. Type the extension number after the comma, then call.

The pause gives the phone system time to answer and play its menu before sending your extension digits. Most systems need about 1 to 2 seconds, which is what a single comma provides. If the system is slow or you keep getting cut off, add a second comma for a longer pause.

Example: if the main number is 555-123-4567 and your extension is 890, you would enter 555-123-4567,890 and then tap the green call button.

Key Takeaways

A comma in the phone number field creates a pause that lets the system answer before your extension is sent.
Hold the + button on the keypad to insert a comma; older iPhones may use * instead.
If the extension doesn't go through, add a second comma to make the pause longer.
You can save numbers with extensions in your contacts so you do not have to enter the pause every time you call.
The wait feature (semicolon) pauses and waits for you to manually send digits, which is useful if you need to enter information after the extension.

Saving a number with an extension in your contacts

Once you have dialed a number with an extension successfully, save it to your contacts so the next call is automatic. Open the Phone app, find the number in your recent calls, and tap the info icon (the i in a circle). Tap Create New Contact or Add to Existing Contact, then save it as normal.

The comma and extension will stay in the saved number. When you call that contact later, the pause and extension will happen without you having to enter anything manually. This is the fastest way to reach a department or person you call regularly.

Using wait instead of pause for interactive systems

Some phone systems ask you to enter information after you reach an extension — like a PIN, account number, or menu choice. For these situations, use a semicolon instead of a comma. The semicolon is a wait, which pauses the call and shows you a prompt to manually send the next set of digits.

To insert a semicolon, hold the + button until a comma appears, then tap it to cycle through to the semicolon. Example: 555-123-4567;890 will call the number, pause, and then show you a button labeled 1 that you tap to send the extension. This gives you control over the timing if the system is unpredictable.

Troubleshooting when extensions do not go through

If you dial a number with a comma and the extension never arrives, the pause is too short. Add another comma to double the wait time: 555-123-4567,,890. Each comma adds roughly 1 second, so two commas give the system about 2 seconds to answer before your extension is sent.

If adding pauses does not work, the system may not accept tone dialing (DTMF) automatically. Try calling without the extension, wait for the menu to play, and manually tap the extension digits on your keypad. If that works, you know the system needs manual input — use the semicolon method instead so you can control the timing.

Some older or unusual phone systems do not accept pauses at all. In those cases, call the main number, listen to the menu, and enter the extension by hand each time. There is no workaround for systems that require real-time interaction.

Differences between pause and wait in practice

A pause (comma) is automatic and silent — the phone sends your extension without you doing anything. Use this when you know the system is fast and reliable, or when you call the same number repeatedly and want it to be completely hands-off.

A wait (semicolon) stops the call and shows you a button to tap before sending digits. Use this when you are calling a new number, when the system is slow, or when you need to enter multiple pieces of information (extension, then PIN, then account number). It gives you control and lets you see what is happening.

Saving extensions in your iPhone notes or contacts

If you call a business that has multiple extensions, write down the main number and a list of extensions in your Notes app or in the contact's notes field. Open the contact, tap Edit, scroll down to Notes, and type something like "Main: 555-123-4567 | Sales: 890 | Support: 891 | Billing: 892".

This way, when you need to reach a specific department, you can quickly dial the main number with the right extension without having to search for it elsewhere. You can also add the full number with pause to your contacts — for example, save "Sales Line" as 555-123-4567,890 — so each department has its own contact entry.

Frequently Asked Questions

What is the difference between a comma and a semicolon when dialing?

A comma is a pause that automatically sends digits after a delay. A semicolon is a wait that pauses and shows you a button to tap before sending digits. Use a comma for automatic extensions, and a semicolon when you need to control the timing or enter multiple pieces of information.

Why does my extension not go through even with a pause?

The pause may be too short, or the system may not accept tone dialing. Try adding a second comma to lengthen the pause. If that does not work, call without the extension and enter it manually when the menu plays. Some older systems require real-time input and cannot accept pre-recorded digits.

Can I save a number with an extension so I do not have to enter it every time?

Yes. Dial the number with the pause or wait, then save it to your contacts. The comma or semicolon will stay in the saved number, so the next time you call that contact, the extension will be sent automatically (or you will see the wait prompt, depending on which you used).

How do I add a pause or wait to a contact I already have saved?

Open the contact, tap Edit, tap the phone number field, and place your cursor after the main number. Hold the + button to insert a comma or semicolon, then type the extension. Tap Done to save the change.

What if the phone system asks for a PIN after the extension?

Use a semicolon after the extension: 555-123-4567;890. This will pause after the extension and show you a button to tap. When you tap it, you can then manually enter your PIN. Alternatively, use two semicolons if you want to pause again before entering the PIN: 555-123-4567;890;.

This guide is for general information only and is not medical, financial, legal, or other professional advice. For decisions specific to your situation, consult a qualified professional. See our Editorial Policy.