How to Use


To use Otubio, all you need is access to a cellphone or land line. THE OTUBIO APP, on the other hand requires a smartphone with either cellular connection or Wi-Fi connection and can be downloaded from the app store or play store.


To start using Otubio services, the user is required to set up an online account. All new users require verification prior to first use. Upon registering, you will get a confirmation message via text on your cellphone. You will also get a verification code that is required to register your account. Please ensure to list your actual cellphone number as the verification code will be sent as a text message to this number. To get an account, you need :

  • A cellphone number
  • An email address

Download the Otubio

Download the Otubio app from the Apple Play Store (Otubio App - Apple Play store link) or from the Google Play store (Otubio App - Google Play store link). You can sign up either from the Otubio website or through the app. You can also add credit to your account through the app or via your account login page online.

Making calls using your phone via Pinless Calling

To start making calls through the Pinless calling service (Home Service), just dial any of our numerous access numbers. Once connected, the IVR will prompt you to dial the destination number you want to call. Always remember that you need to add the international dialing code when calling an international number. If you would rather skip the process of entering the number you wish to call, you can use our Otubio app which lets you directly call from your contact lists. You can also use our DID forwarding service which lets you allocate specific access numbers to your frequently called numbers. Please see : Using Otubio App and DID Forwarding

Making calls using your phone via Calling Cards

We also have several calling cards (which can either be Pinless or Pin option) that enables you to call several destinations at extremely low rates. To use the phone cards, simply select the type of phone card you would like and then checkout. If you chose the PIN option, you will get a unique card with a serial number pin. To use the card, simply call the access numbers and the IVR will ask you to enter your pin. Once this is done, you can enter your final destination numbers. For the Pinless calling cards, there is no need to enter a pin. Once the system verifies your phone number, it will allow you dial your intended destination numbers without the need for a pin.

DID Forwarding

DID forwarding enables you to designate 5 access numbers to your frequently called contacts. As an example, if you call Tom Smith (fictitious name) all the time and you do not want to enter the number every time you dial our access number, all you need do is log into your account and select DID forwarding. Here you will pick any of our access numbers and assign it to Tom Smith’s number (fictitious name). Any time you dial that access number, you will be connected directly to Tom Smith (fictitious name)

Using Otubio App

Our Otubio app simplifies the entire calling process. You no longer need to remember long numbers. You can simply dial directly from your contact list. The Otubio app uses either Wi-Fi or cellular connection so you can always reach family and friends. To make a call, simply open the Otubio app, select the contact you want to dial from your contact list and dial away. Please note, in order to ensure that your numbers are dialed correctly, please store your international contacts with the international prefixes or simply add the + sign. For example, if you have a contact that lives in the UK and the person’s number is 11111111. We know that the international prefix for the UK is 44. As a result, when saving this contact in your phone, you should save the number this way: +4411111111.

Checking Call Rates

Our call rates are publicly displayed. We do not charge any hidden or connection fees unless otherwise explicitly stated for certain promotional call cards. To check our rates just visit RATES.

Refer a Friend

Otubio has a reward program for our customers. For every new customer you refer that signs up with at least $10, you will get a referral bonus worth $3. You can refer as many friends as you want and keep earning bonuses. In order to start referring friends, you have to be a registered customer with at least a minimum initial call credit of $5 on your account. To start referring friends, log into your account and select the Tell Friends link. An email will be sent to the email address you provide. Once that friend signs up with at least $10 call credit, you will receive a $3 bonus

Call/Usage History

Each customer has access to their call history and can check to see the numbers last dialed. Log into your account, click on usage history and you will be able to see called numbers, call duration, and the rate per minute for the calls.

Download Otubio App to make UNLIMITED CALLS - Sticky logo

Otubio provides excellent quality calls with no hidden, maintenance or monthly fees. Calls are charged using one minute rounding. By using this website or Otubio services, you are agreeing to our terms of service and privacy policy. Taxes and fees may apply where applicable.

Quality is our Top Priority
Email: Contact Otubio
Phone: 832-2-OTUBIO (832-2688246)