Try these tips if your iPhone or iPad freezes or has performance issues.
Apps often need an internet connection, and slow performance can occur due to network congestion or when a device reconnects to cell towers while moving. Even with a strong signal, you may need to wait, try a different location or use Wi-Fi. Contact your network provider if mobile data issues persist across multiple locations.
To force close an app on your iPhone or iPad:
Swipe up from the bottom of the screen (or double-click the Home button on older iPhone and iPad devices).
Find the app.
Swipe up on its preview to close the app.
Force closing apps unnecessarily can actually slow down your device because it takes longer to reload all of the data when you reopen the app.
Learn what to do if an app repeatedly stops responding
iOS and iPadOS manage storage automatically during tasks such as app installs and updates by removing items that can be downloaded again or that aren’t needed any more. To avoid slow-downs, maintain at least 1 GB of free space. To check your device’s storage, go to Settings > General > [Device] Storage.
iOS and iPadOS offer storage-saving recommendations in Settings > General > [Device] Storage. You can enable these recommendations or review apps to free up more space. If you can’t see any recommendations, or if you need to free up even more space, review the apps on your device. Your apps are listed on the same [Device] Storage screen along with the amount of space they use.
Tap an app, then choose from the options:
Offload the app, which frees up storage used by the app, but keeps its documents and data.
Delete the app, which removes the app and its related data.
Depending on the app, you might be able to delete some of its documents and data.
Learn more ways to optimise your storage
Low Power Mode is a feature that helps extend battery life by limiting device power consumption. When enabled, certain features are disabled or work slower, and the battery icon turns yellow. Low Power Mode can be turned on in Settings > Battery. Consider leaving Low Power Mode off if you need your iPhone or iPad to function without low-power restrictions.
Learn more about Low Power Mode
When your iOS or iPadOS device gets too hot or cold, it may run slower. To fix this, move it to a more moderate temperature.
Learn more about acceptable operating temperatures
All rechargeable batteries are consumable components that become less effective as they chemically age. Over time, the rechargeable batteries in all iPhone and iPad models will diminish in their capacity and peak performance and will eventually need to be replaced. iOS can show battery health and recommend if an iPhone battery needs to be replaced. Go to Settings > Battery and tap Battery Health. Battery Health is only available on iPhone.
Find out how to check your iPhone battery
A touch screen that responds to taps incorrectly can make your device seem slow. If you think that your touch screen isn't responding correctly, try restarting your iPhone, iPad or iPod touch.
If your iPhone or iPad touch screen still isn't responding, you might need service. Get service