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

Why does international calling use so much data?

Why does international calling use so much data?

Each minute of HD voice call uses about 1MB of data. Use Wi-Fi when available to avoid mobile data charges.

Related QNAs

Can I get a refund for unused numbers?

Yes, if the number hasn’t been used or assigned within seven days. Contact our support team and provide your purchase reference for verification.

I was charged but didn’t get my number.

Sometimes payments take longer to reflect. Email your transaction ID to support@callmama.com — we’ll either activate your number manually or issue a refund.

Why are some calls more expensive than others?

Rates vary by network and line type mobile, fixed, or premium lines may have different costs.

There’s voice delay during calls.

High network latency can cause echo or delay. Try reconnecting to a faster network or closing background downloads.

What are your feelings

Was this helpful?

Affordable Calls, Global Reach

Download the Callmama App Now!