Thank you

Thank you!

An Ooma Office Sales Representative will be in touch shortly.

If you do not receive the call within a few minutes, please call: 877-353-5185

Popup images - person doing consultation

Let’s talk!

Our team can help you find the right solution.

Spectacular Spring Specials for Small Businesses! Call 877-353-5185 today.
Chat support

Thanks — We’ve Got Your Request.

A member of our support team will reach out to you as soon as we’re back online. In the meantime, you can keep browsing our support articles.

Need an answer right now?

Most questions are already answered in our support articles — setup guides, troubleshooting and how-tos.

Visit the Support Site
Or leave a message and we’ll follow up
By clicking below you expressly agree to and acknowledge the statements set forth in this
link By submitting your contact information, you are giving express written consent to receive on your telephone, mobile or other electronic device auto-dialed, pre-recorded, artificial or other automated telemarketing calls or texts (SMS & MMS) from Ooma, its marketing partners, or third parties acting on Ooma’s behalf, even if your number is a on a corporate, state or federal Do Not Call (DNC) list. Carrier fees may apply. Consent is not a condition of purchase. It also indicates that you agree to Ooma’s Privacy Policy.
and in the Ooma Rewards Program Terms and Conditions.
Fix error

How to choose the best calling mode with the mobile app

Last Updated: July 21, 2025

The Ooma Office mobile app features two different calling modes:

VoIP mode

VoIP stands for Voice over Internet Protocol. Use this option if your phone is connected to a strong, reliable, and cost-effective Internet connection.

Advantages

  • Using VoIP allows you to use call control features like hold music and call transfer.
  • VoIP can be a less expensive option in some cases. For example, you can use a free Wi-Fi connection to make free calls while traveling internationally.

Disadvantages

  • If you are not connected to Wi-Fi, VoIP calls will use your cellular data.
  • VoIP calls on cellular data may be less reliable, especially while you’re in motion, like if you’re driving or riding a bike.

Cellular mode

Use this option for greater reliability when making and receiving calls, especially if you’re in the car or otherwise in motion. Instead of making calls over the Internet, the app uses your standard cellular voice minutes.

Advantages

  • Superior performance while you’re driving or otherwise active.
  • Works better when your cellular data or Wi-Fi connection is slow or unstable.
  • May cost less than using cellular data.

Disadvantages

  • Most modern cell phone plans have unlimited minutes, but this mode will consume minutes from cellular plans that are not unlimited.
  • Cannot access in-call features such as hold music and call transfer.
  • Requires additional initial setup.

The first time you place an outgoing call in Cellular mode, you’ll see a popup that contains additional information about this calling mode. Tap Continue if you want to see this popup each time you call. Otherwise, tap Don’t show again to permanently dismiss the message.

When a call comes in via Cellular mode, your phone will notify you before it rings. Your phone will ring a moment later. Depending on your preferences, you may hear an automated prompt asking you to press 1 to accept the Ooma Office call.

Changing your calling mode

If you don’t choose a calling mode, your app will default to VoIP mode. You can change your calling mode at any time by following these instructions:

  1. Log into the mobile app.
  2. Tap the More tab, then tap Calling.
  3. Tap Calling Mode.
  4. Toggle your app’s calling mode.
  5. Tap Save.

If you are switching from VoIP to Cellular mode, you will need to enter your 10-digit cellular number.