Make sure your iPhone isn't on Airplane Mode because it turns off cellular and Wi-Fi services. Restarting your iPhone can ...
Common causes include carrier outages, outdated carrier settings, corrupted network configuration, and SIM/eSIM provisioning errors.
When your iPhone 6 shows ‘No Service,’ ‘Searching…’ or ‘Invalid SIM,’ you lose cellular connectivity entirely. This can be due to SIM card problems, carrier settings, or software glitches. Follow ...