Why Am I Not Receiving Verification Codes (2FA/MFA) on My Unitel Voice Number?

If you're trying to receive a verification code through text messaging on your Unitel Voice number, you may find that certain websites, banks, apps, or online services do not deliver these messages.

These codes are commonly called:

Unitel Voice uses VoIP (Voice over Internet Protocol) technology. Some companies restrict or block verification codes from being sent to VoIP phone numbers as a fraud prevention measure.

This is an industry-wide limitation affecting VoIP providers, not an issue specific to Unitel Voice.

Many websites and financial institutions use SMS verification to protect accounts and prevent fraud.

Because VoIP phone numbers can sometimes be used to create fraudulent accounts, certain companies choose to send verification codes only to traditional mobile carrier numbers.

These restrictions are particularly common with messages sent from short codes, which are shortened phone numbers used by businesses to send automated messages, including six-digit security codes.

Even if SMS messaging is active and working properly on your Unitel Voice number, some verification messages may still be blocked by the company sending them.

Our underlying SMS carrier, Bandwidth, has identified several companies whose verification codes may not be delivered to VoIP numbers on its network.

These include:

Important: This is not a complete list. Other companies, banks, websites, and applications may also restrict verification messages to VoIP numbers.

Unitel Voice numbers with SMS service enabled may receive verification codes from some providers. However, we cannot guarantee delivery of 2FA, MFA, OTP, or short-code verification messages.

Whether a verification code is delivered depends on the policies and restrictions of the company sending the message.

Activating SMS on your Unitel Voice account does not override these restrictions.

If you're having trouble receiving a verification code, we recommend the following:

Unfortunately, Unitel Voice cannot override restrictions imposed by banks, websites, apps, or other companies that choose not to send verification messages to VoIP numbers.

If regular SMS messages are working but verification codes from a specific company are not arriving, the issue may be related to the sending company's VoIP restrictions rather than your Unitel Voice service.

For important accounts that require reliable SMS verification, we recommend using a traditional mobile carrier number.

If you're experiencing issues receiving regular text messages or need assistance with your Unitel Voice SMS service, our Support Team is happy to help.