This is why the last 1% of your phone battery lasts so long! Now, you've probably noticed this at one point in your life and wondered if it's like a weird bug, and questioned if your phone is working correctly, don't worry it's not a bug and the reason for it is actually pretty surprising! When you see that your phone says 1%, it's not actually at that level. In reality, it has much more battery. Modern batteries cannot go to 0%.