To get unlimited data on Q Link Wireless, you need to ensure you have the correct APN settings configured on your device. The APN you need to enter is "Qlink". You can access your APN settings by going to your phone's wireless & networks section in the settings app. From there, select Mobile networks then Access Point Names. Click the plus icon to add a new APN. Enter "Qlink" as the name and in the APN field. For the APN type, select "default,supl" and save your changes. With the Qlink APN (#QlinkAPN) active, all of your data usage will now be unlimited rather than subject to any monthly caps. You should then be able to use data freely without overage charges. Just be sure to only use data and not tether/hotspot your phone.