If mobile data isn’t working, start by confirming that data is enabled in your device’s settings. Restart your phone, as this can often reset the connection. Check if you’re in an area with poor coverage—try moving to a different location. Verify that your data plan is active and hasn’t reached its limit; some providers restrict speeds or cut off data entirely after usage caps. You may also need to update the device’s APN (Access Point Name) settings, which are responsible for connecting to the mobile network. Resetting network settings to default can also resolve persistent data issues. If problems persist, contact your carrier for assistance.