First, confirm that cellular data is turned on and that you have a strong signal. Then log in to your MyBundle account and open Mobile Dashboard to check your current usage. If you are on the 2GB or 5GB plan and you've used all your data, your service will be at 256 Kbps until the next billing period.
Log in to your MyBundle account, click the person icon in the top right, then click 'Mobile' to open your Mobile Dashboard. Select 'Get Help' to start a chat with our mobile support team, who can help with any questions or issues.