CallMama SMS works over the internet (VoIP), not via your cellular provider. A stable connection is needed for sending or receiving.
Instant disconnection usually means:
Your message may contain restricted words or links. Simplify your content and resend after editing.
This usually happens if your card expired or funds are low. Update your payment details and tap “Retry Payment” in the billing section.
Your billing currency is tied to your country of registration. To switch, you’ll need to close the account and create a new one in the target country.
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