Check for network outages. Use a site like Downdetector to see if your provider is having local issues.
Call barring is a network feature that allows you to stop certain types of calls. If "All Outgoing Calls" is toggled on, your phone will stay silent. Navigate to your Call Settings. Find the Call Barring option. Ensure all "Outgoing" categories are turned off. unblock outgoing calls
Test the SIM in another phone: If the SIM doesn't work in a second device, the SIM card itself is likely damaged and needs replacement. Resolve "Caller ID" Restrictions Check for network outages
Fixed Dialing Numbers is a service mode that restricts outgoing calls to a pre-approved list of contacts. If this is on, you won't be able to call anyone else. Open the Phone app. Go to Settings or Call Settings. Look for Supplementary Services or More Settings. Select Fixed Dialing Numbers. If "All Outgoing Calls" is toggled on, your
Apps like Truecaller or other "spam blockers" can occasionally malfunction and block your own outgoing dialer.