The device may freeze and you may not be able to close the application while taking the test.
We recommend a forced reboot of the device In this case.
Here are recommendations for different generations of iPhone/iPad devices. You can also choose the language/country at the bottom of the page and the iOS version at the top of the page (for iPhone only).
If you use Android smartphone or tablet:
- Use the universal combination: press and hold the power and volume buttons (+ or -) on the device for 7-10 seconds. The combination maybe different depending on the device model.
- If the device has a removable battery, remove and reinsert the battery.