There could be several reasons why your phone is not updating, here are some steps you can take to troubleshoot:
1. Check if your phone is compatible with the latest version of the operating system. If your device is too old, it may not support the latest updates.
2. Make sure your phone has enough storage space available to download and install the update. You may need to free up some space by deleting old files or apps you no longer use.
3. Check if you have a stable Wi-Fi or cellular connection. If your internet connection is poor, the update may not download properly.
4. Make sure your phone's battery level is sufficient. If your battery is running low, connect your device to a charger and try updating again.
5. If none of the above steps work, try resetting your phone's network settings or performing a factory reset. This can sometimes fix issues that are preventing the update from installing.
If you are still having trouble updating your phone, you can contact your phone manufacturer's customer support for further assistance.