The SIM Applications menu 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 on your device.
The SIM Applications menu is found on iPhone, iPad, and Windows devices. For Android devices, see the SIM Toolkit article for more information.
Go to your iPhone Settings > Phone > scroll all the way down to find the SIM Applications menu
Go to your iPad Settings > Cellular > SIM Applications
*in some iOS versions you may need to select Cellular Data Options after Cellular to find the SIM Applications menu
Go to your Settings menu > mobile network > sim applications