Water damage is one of the most common causes of iPhone failure. If you think your iPhone may have been damaged by water, it’s important to check for water damage as soon as possible. There are a few different ways to check for water damage on an iPhone.
One way to check for water damage is to look for the Liquid Contact Indicator (LCI). The LCI is a small, white sticker that is located inside the SIM card tray. If the LCI has turned red, it means that the iPhone has been in contact with water. You can check it by popping out your SIM card tray using a paperclip or a SIM ejector tool. If the LCI is red, that means your device has been in contact with water.