Calling all Samsung owners! How can you tell if it’s time to replace your battery? Try the 2-second "spin test."

If your phone has been acting up lately and the problem is not software, the culprit could be the battery. Here’s a quick, fun, no-brainer test.

Take your battery out of your device and lay it on a flat surface. Flick one of the corners lightly and if it spins like a top, you have a bad or “swollen” battery. Conversely, a good battery should not spin. It should also be completely flat, but since the physical difference between a bad and good battery is not always visible to the naked eye, the “spin test” is preferable.

Your phone’s battery can turn bad by a number of factors such as overheating, using a faulty cable, and playing graphics intensive games through a prolonged period of time.