Several users report that they encounter the following error: Could Not Activate Cellular Data Network: You Are Not Subscribed to a Cellular Data Service. Follow the tips below to fix cellular data issues on your iPhone. After performing each step, please test to see if the issue is fixed.
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It’s always a good idea to backup all your iPhone Data before troubleshooting. Backing up ensures your personal data is secure and safely tucked away just in case you need it or if your iPhone requires a restore.
Fixes for iPhone: “Could Not Activate Cellular Data Network”
- Turn off and back on cellular data (Settings > Cellular (or Mobile))
- Turn off and on (or vise-verse) Enable LTE (Settings > Mobile> Mobile Data Options > Enable LTE)
- Connect your phone to a WiFi network and let the phone sit for about 30 seconds.
- Restart your phone by pressing and holding the on/off button
- Update your carrier settings by tapping Settings > General > About. You see a prompt if there is an update.
- Reset your network settings by tapping Settings > General > Settings > Reset Network Settings
- Update your iOS, if there is an update, by tapping Settings > General > Software Update
- Remove your SIM card and reinsert again
- If you used a foreign SIM, go to Settings>General>About>Carrier. Check that it displays the name of your current mobile carrier. If not, reset your iPhone’s settings by going to Settings>General>Reset>Reset All Settings
- First back up your device (if you have done so using iCloud or iTunes) then tap Settings > General > Reset and choose “Erase All Content and Settings”
- Restore your iPhone as new using iTunes