AT&T: What can i do when i received AT&T Free Msg: It looks like you want to use data but have none available.

Phenomenon

Some consumers who use AT&T SIM cards have encountered such a problem, the 4G router LED light turns blue (IP obtained), but cannot access the Internet. When opening the webpage, the browser will pop up a message like this:

'AT&T Free Msg: It looks like you want to use data but have none available. You may need to add a data package or change to a plan that supports data for your device. To check your plan and manage your account, login to att.com/myprepaid.'

Solution

Usually this is because you are using a SIM card with a voice and data plan, which is the type of card used for mobile phones. AT&T does not allow this kind of card to be used in routers, so the solution is to call AT&T to change the SIM card to a data-only plan.