Experiencing issues with mobile data connectivity after a software update on your phone can be frustrating, but there are several steps you can take to troubleshoot and potentially resolve the problem:
Restart Your Phone: A simple restart can often address glitches or temporary issues.
Check Mobile Data Settings: Ensure that mobile data is enabled in your phone's settings.
Toggle Airplane Mode: This action can refresh the network connections and may resolve mobile data issues.
Update Carrier Settings: Some software updates may require corresponding carrier updates. Check if there are any carrier settings updates available for your device and install them.
Reset Network Settings: Resetting network settings can resolve connectivity issues.
Check APN Settings: Access Point Name (APN) settings control how your phone connects to the internet. Make sure the correct APN settings are configured for your carrier. You can find these settings in the mobile network or cellular data section of your phone's settings.
Contact Your Carrier: If the issue persists, reach out to your mobile carrier's customer support. They can provide assistance, check for network issues, and offer specific guidance based on your carrier's network configuration.
Factory Reset (as a last resort): If all else fails, you may consider a factory reset.

By systematically going through these steps, you increase the chances of resolving the mobile data connectivity issue on your phone after a software update. If problems persist, seeking assistance from your phone manufacturer or carrier is recommended.
Read also: Why won't my computer recognize my SD card after an update