Apple responds to videos about crash detection.

Recently a number of influencers have been testing apples new "Crash detection" feature, Youtubers Luke Miani, TechRax and a slew of others have all run various tests all of which showed mixed results.

Tests ran by Youtuber Luke Miani showed that crash detection didn't work, despite totaling multiple cars during testing. But on the other hand Youtuber TechRax tests showed much better results, he was able to trigger crash detection during most of the testing.

Apple has issued a response to these tests, an apple spokesman stated that most of these testing conditions don't provide enough signals to the iPhone and Apple watch to trigger crash detection, and the GPS wasn't able to identify a road and other factors during those tests.

Apple says that crash detection relies on "advanced Apple-designed motion algorithms trained with over a million hours of real-world driving and crash records.

• Motion sensors: All the devices have a three-axis gyroscope and high-g force accelerometer, which samples motion more than 3,000 times a second. It means the devices can detect the exact moment of impact and any change in motion or trajectory of the vehicle.

• Microphones: The mics are used to detect loud sound levels that might indicate a crash. The microphones are only turned on when driving is detected, and no actual sound is recorded, Apple says.

• Barometer: If the air bags deploy when the windows are closed, the barometer can detect the change in air pressure.

• GPS: Readings can be used to detect the speed prior to a crash and any sudden lack of movement, as well as inform the device that it's traveling on a road.

• CarPlay and Bluetooth: When connected, these give the algorithms another signal that the phone is on board a car, so it knows to look out for a crash.