8/F CHINA HONG KONG TWR, 8-12 HENNESSY RD, Wan Chai, Hong Kong

The app says ‘Invalid Number’.

The app says ‘Invalid Number’.

Always include the correct country code (e.g., +1 for US, +44 for UK). Re-enter the number in international format before redialing.

Related QNAs

Can I receive OTPs on virtual numbers?

Yes, most online services support CallMama numbers. However, some banks block VoIP-based OTPs for security reasons.

The app freezes while loading numbers.

Restart your device and reopen the app. If it still hangs, reinstall CallMama to reset all cached files.

My number isn’t activating after payment.

Activation usually completes within minutes, but delays can occur.

Restart the app or log out and back in.
Ensure your payment was successfully processed.
If still inactive after 10 minutes, contact support@callmama.com with your transaction ID.

Why can’t I send SMS from my CallMama number?

Ensure your account has SMS credits and a good internet connection.

Use international format (+countrycode) when sending.
Restart your app if the message queue freezes.

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