"Carrier Hub Processing Requests" is a notification that appears on Android devices and is caused by the Hub app, which is a system app that comes pre-installed on most Android devices. The app is used to manage the phones settings and keep track of usage, and it allows users to customize their device, set up Wi-Fi hotspots, and manage other connected devices. The notification can appear more frequently on T-Mobile and Sprint networks, and it may be caused by misconfiguration of the app with that of the device. The notification can also appear after restarting the device since it tries to connect to specific mobile network towers. If you keep getting the notification, there are several things you can do to fix it, including:

• Restarting your device
• Updating the Carrier Hub app
• Clearing the cache and storage of the Carrier Hub app
• Disabling notifications for the Carrier Hub app
• Uninstalling and reinstalling the Carrier Hub app
• Checking for any pending updates for the Carrier Hub app
• Contacting your carriers network for further assistance if the issue persists

Its important to note that uninstalling the Carrier Hub app may disable some system features on your phone, such as voice over Wi-Fi and secure Wi-Fi, so its recommended to try other solutions first.