You may either remove some unnecessary files or copy them
Make sure Safari's cache is empty
Caches accumulate rapidly while using Safari on an iPhone daily.
Shut down all apps in the background
Having too many applications open at once might slow it down.
Activate manual updates instead of automated ones
You probably didn't even realize that this was a potential cause of your iPhone's sluggishness, and that the cloud may have the same effect on Use this to disable
Turn Off Your Device's Location Services
In the event that you have enabled location services on your iPhone, the device will poll its network for your location at regular intervals. That being said, your iPhone may become unresponsive, overheat, or become stuck if the quality of your network is inadequate.