Double-check the dialing format — always start with “+” followed by the country code (e.g., +44 20…).
Top up your SMS credits from the Billing section. Once funds are added, refresh the app to update your wallet balance.
Some countries may be temporarily under maintenance or not yet supported for outbound calls. Check back later or contact support for updates.
Poor internet or unstable Wi-Fi often causes this. Switch to mobile data or a stronger signal and try again.
Yes, most online services support CallMama numbers. However, some banks block VoIP-based OTPs for security reasons.
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Get connected with your friends and family, no matter where you are
Get connected with your friends and family, no matter where you are.
212 (New York)
