I definitely understand how concerning this is. Clearing the cache partition can be especially helpful after an update. Here are the steps to follow:  https://www.lifewire.com/clear-cache-on-samsung-s10-5182265  I am also including some additional steps you can try:  https://bit.ly/3sYktby   If the phone continues to overheat and restart, it would be recommended to have the phone evaluated by a certified technician. You can take the phone to a local uBreakiFix,  https://www.ubreakifix.com/samsung . For additional service options, please reach out to us via one of the following options: 1. Facebook Messenger:  http://m.me/samsungsupport  2. Twitter:  https://twitter.com/messages/compose?recipient_id=18768513-  3. Private Message:  http://bit.ly/2XERsky ... View more