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

I can’t make international calls from the app.

Before placing calls:

Check that you have active calling credits.
Make sure international calling is enabled on your plan.
Some countries may be temporarily restricted — check the supported destinations list.

Related QNAs

Error 30008: Message blocked by carrier.

Your message may contain restricted words or links. Simplify your content and resend after editing.

Calls drop when I switch to another app.

Enable background running permission. Some phones suspend VoIP when multitasking — allow CallMama to run in background.

My message failed with an ‘Unknown Error’.

Restart your app, check your internet, and resend. If the problem persists, clear your cache or reinstall the app.

I hear a message like ‘Number not available’.

This is a network-level message from the recipient’s carrier. Retry later or verify the number format.

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