https://wccftech.com/how-to-clear-iphone-11-pro-max-ram-and-boost-performance/

You have to take some measures when your iPhone starts acting up. However, before you go for a full reset, there are certain tricks that might help you out. Sometimes all your iPhone needs a RAM boost in order to boost performance and clear certain errors. If you’ve been having some issues, here’s how to clear RAM on your iPhone 11 Pro Max and older models with Face ID.

The process to clear RAM on iPhone 11 Pro Max and older models is fairly simple. It does not involve any hassle where you would need to put your device in a risky state. In addition, iOS 13 has brought some changes in the arrangement of the settings. For instance, the Accessibility option is no longer available in Settings > General, so follow the step-by-step instructions listed below to clear RAM and boost the performance of your iPhone.