Avoid tapping the “Send” button multiple times if your network is slow. The system automatically retries if the first attempt delays.
Some international carriers don’t support Unicode characters. Use plain text for guaranteed delivery.
Echos often result from weak Wi-Fi or device feedback. Try using headphones or switching to a wired connection.
Ensure you’ve entered both a message body and recipient number. Blank fields can cause this error.
Open Settings → Call Features → Record Calls. Once activated, recordings appear in your call logs after each session.
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