Apple iPhone 5s Capable of Motion Tracking Even With Seemingly Dead Battery

m7 chipReddit user, Glarznak, was on vacation when his iPhone 5s ran out of juice. When he returned home to check on his Argus activity tracker, he noticed that it was capable of tracking his steps, despite the phone’s inability to function. Here is his own account of what happened:

While traveling abroad, my iPhone cable stopped working so my 5s died completely.

I frequently use Argus to track my steps (highly recommended if you have any health bands or accessories) since it takesadvantage of the M7 chip built into the phone.

Once I got back from my vacation and charged the phone, I was surprised to see that Argus displayed a number of steps for the 4 days that my phone was dead.

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