Overheating spells all kinds of troubles for your phone, including seriously reducing performance, battery degradation, and decreasing the overall lifespan of the device. In worst-case scenarios, the unchecked heat may cause the melting of the phone’s CPU, and in rare cases, even explosions.
While the last scenario is unlikely to happen, it’s worth pointing to the Samsung Galaxy Note 7 debacle that happened a few years back as a cautionary tale. The bottom line: don’t ignore overheating issues and make sure you take immediate action to avoid anything serious happening to your device.