Avoid Putting Your iPhone Inside Your Pockets on Really Hot Days

If the day is really hot, your iPhone might overheat just by carrying it with you.
The lack of air flowing in your jeans, combined with your own heat on a hot day and all the background activities your iPhone is doing, might be too much for it.
Overall, it’s best to keep it in a bag. It’ll have more breathing room and will not be in direct contact with your body.