The phone slows down as it heats up, and then slows down infinitely when the battery dies. (With some workloads and chargers, it's possible running on a phone

The phone slows down as it heats up, and then slows down infinitely when the battery dies. (With some workloads and chargers, it's possible running on a phone would drain the battery faster than it can recharge even if you plugged it in.)