That country may not support SMS from VoIP numbers. Please check the list of supported destinations before sending.
Rates vary by network and line type mobile, fixed, or premium lines may have different costs.
Some banks or websites restrict OTP delivery to VoIP numbers. If possible, use an alternate number or contact the provider for manual verification.
The destination network might block VoIP connections. Try calling another line or contact the recipient via a different method.
Go to “Rates” in the app, select your destination, and view per-minute pricing before dialing.
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