The microcurrent sensor on your iPhone can measure and monitor your device’s backflow devices, and then the device will automatically shut off if it detects any abnormal readings.
If the device detects an abnormal backflow, it will shut off and you’ll see a notification that your iPhone’s device shutdown is ongoing.
Here’s how to configure the iPhone’s microcurrent monitor to measure and alert you if the device’s data is abnormally low: Open the Settings app Tap About Phone Scroll to the bottom of the page and tap More Tap About MicroCurrent Click the More button at the bottom and tap MicroCurrent.
Turn on the device checkbox.
The device’s microdata will display on the monitor, along with an LED, indicating the device is reporting low power.
Tap the button to confirm.
If you’re using a microcurrent device to measure the device, you should be seeing the LED.
If your device doesn’t report low power, you can use your phone’s accelerometer to measure your device with the iPhone.
The accelerometer is usually a little larger than your iPhone and should give you a better idea of the device power level.
For example, if you’re measuring the device with a accelerometer, the device should be measuring between 10 and 50 milliamps.