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

Voice sounds robotic or metallic during calls.

Voice sounds robotic or metallic during calls.

That happens when network packets are lost in transmission. Reconnect to a stable signal to restore normal audio clarity.

Related QNAs

I completed payment but the number didn’t appear in my account.

Sometimes syncing takes a moment. Try refreshing the app or logging out and logging back in. If the number still doesn’t appear, contact CallMama Support with your transaction ID.

Can I receive OTPs on virtual numbers?

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

Why can’t I purchase a virtual number?

If you’re unable to purchase a number, please ensure:

Your payment card is active and authorized for international transactions.
Your CallMama account is verified and linked to a valid email.
Try refreshing the app, clearing cache, or switching your internet connection before retrying.

Error 30005: Unknown subscriber.

The recipient’s SIM might be inactive or disconnected. Verify their number before resending your message.

What are your feelings

Was this helpful?

Affordable Calls, Global Reach

Download the Callmama App Now!