How to Call an Extension on Android: A Step-by-Step Guide

Calling an extension on Android can seem tricky if you’ve never done it before. Unlike the iPhone, there’s no dedicated extension dialing feature built into Android.

But with the right tricks, you can easily reach any extension number right from your Android smartphone.

In this comprehensive guide, we’ll explain multiple methods to call extensions on Android depending on your specific needs.

Whether you want to call an extension number saved in your contacts, dial extensions ad-hoc during a call, use third-party apps, and more – we’ve got you covered.

Calling Extension in Contacts

The easiest way to call extensions on Android is by saving them directly in your contacts.

Here are the steps to save and call an extension number from Contacts:

  1. Open the Contacts app and select a contact to add an extension.
  2. Tap on the phone number field and enter the extension after the main number separated by a comma. For example: 555-1234,456
  3. Tap Done once you’ve entered the extension.
  4. To call this contact’s extension, simply tap on their name in the Contacts app.
  5. On the dialer screen, tap the phone icon with ‘1 Ext.’ to directly dial the main number and connect to the extension.

This approach saves you from re-entering or remembering extensions every time.

Just tap on the contact once and you’ll be connected to their extension automatically.

Dialing Extensions Mid-Call

If you forgot to add an extension to your contacts, you can still reach it during a call using your Android dialpad.

Follow these instructions to dial an extension once on call:

  1. While on call with the main number, open your dialpad.
  2. Key in the extension number you’re trying to reach.
  3. Tap on the call icon to dial the entered extension.
  4. You will hear a new dial tone once connected to the extension.

This method works reliably across all Android devices. Just remember the extension number you need to reach mid-call.

Calling Extensions with Plus Code Dialing

Modern business phone systems often use plus codes (+ code) along with extension numbers. Here’s how to dial extensions with plus codes on Android:

  1. Open the phone dial pad and enter the main number
  2. Long press * key on the dial pad to enter ‘+’ symbol
  3. After the main number, enter the extension number prefixed with the plus code
  4. Tap the call icon to dial the number + extension

As an example, to dial 555-1234 Ext. 456 with plus code 149*, you’ll enter: 5551234 149*456

The steps remain the same for any local or international numbers you’re trying to reach.

This comes in handy especially when calling company extensions abroad.

Using Third-Party Apps to Call Extensions

Besides the native phone dial pad, third-party apps provide even more options to dial extensions easily.

Some popular Android apps for calling extensions include:

  • Ext Number Dialer – Standalone app solely focused on extension dialing. Supports plus code dialing.
  • Skype – Make low-cost calls with extensions using Skype credits.
  • Google Voice – Integrates with your carrier number and provides features to store and dial extensions.

The advantage of using such apps is that they simplify extension management and save you money, especially on international extension calls.

Pros and Cons of Calling Extensions on Android

Here’s a quick rundown of some of the key advantages and limitations of using extensions on your Android device:


  • Direct access to specific contacts using dedicated extension numbers.
  • Bypass automated attendants and reach the correct department faster.
  • No need to memorize long extension numbers when saved directly in Contacts.


  • No native support for storing extensions in the Contacts app.
  • Dialing extensions mid-call can be tricky without the number handy.
  • International extension numbers may incur additional long-distance charges.

Frequently Asked Questions

Can I save extensions in Contacts on Android?

Yes, you can save numbers with extensions in the default Contacts app on Android. Simply enter the main number with the extension separated by a comma as shown: 555-1234,456

Do extensions work with VoIP calls?

Yes, extensions will work reliably with Voice over IP (VoIP) calls made using apps like Skype, WhatsApp, Google Voice, etc. The steps to dial the extensions remain the same.

Can I call international extensions?

You can call international extensions from your Android device using plus code dialing. However, charges may apply depending on the destination country and your cellular plan.

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