Expired subscriptions or insufficient balance cause that. Tap “Renew Now” or contact support to reactivate.
Check if sound permissions are allowed and your device isn’t on silent. You can also change ringtone type in settings.
This delay may occur due to temporary carrier congestion or DND (Do Not Disturb) filters. Messages are usually delivered within 5–10 minutes.
Battery optimization or data saver mode can interrupt ongoing VoIP calls. Add CallMama to your phone’s “Unrestricted Apps” list.
Yes, under Notification Settings, assign unique tones to specific contacts for easy identification.
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