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I am sorry to hear of your S22 Ultra overheating and having poor battery life, and can understand the inconvenience. Whether you're using a phone, tablet, smart watch, or earbuds, all Galaxy devices have a set temperature range, where they operate at their best. While they may feel warm under certain conditions, like charging, this does not affect the device's lifespan or performance. However, if your devices get too warm, it could cause some issues. Use this guide to help keep your devices at their normal operating temperature: https://www.samsung.com/us/support/answer/ANS00076952/
There is also a handy guide to maximizing the battery life on your phone. Full performance will naturally drain the battery quicker than anything, but you can extend your battery life with this guide: https://www.samsung.com/us/support/answer/ANS00078987/
Lastly, you can adjust the color contrast on your S22 Ultra. Here's another guide that can walk you through customizing your settings: https://www.samsung.com/us/support/answer/ANS00063051/
If your phone is getting too warm to touch, repairs would be recommended in order to have the technicians evaluate the device. You can use the following link to find a list of service centers in the U.S. that can do the repair: https://www.samsung.com/us/support/service/ or by calling customer service at 1-800-726-7864.
For service outside the U.S., please use this link: https://www.samsung.com/us/common/visitlocationsite.html