It is located a your Apps Menu with all of your other apps and has an icon similar to the one above. The SIM Toolkit app is the control center of the KnowRoaming SIM Sticker. After applying the SIM Sticker to your SIM card and putting it back into your phone, the SIM Toolkit will be available in your Apps Menu.

What does SIM Toolkit do on Android?

The SIM Toolkit (STK) is a set of commands or applications that define how a SIM card interacts with the outside world. The toolkit, which is usually programmed into the SIM card, enables the card to: Drive mobile equipment interface. Build up interaction between the network application and end user.

How do I activate my SIM card Toolkit Android?

Settings –> Wireless Settings -> Sim & Network Settings -> Click on a sim (SIM 1 or SIM 2, this one is dual sim) -> Scroll to the bottom of the list and click on SIM Toolkit.