Adrian Kingsley-Hughes for ZDNet:
iPhone and iPad are probably two of the most ubiquitous and best-known consumer electronics devices that exist … But that's Also amazing how many people accidentally mistreat their iPhone or iPad by doing things that are either unnecessary or even harmful.
Today [in a café in the wilds of Wales, UK] I came into a conversation with a couple about an iPhone that was abusive and running slowly … Within about an hour, the two spotted almost every iPhone and iPad power and performance myth and legend that I have ever come across. And I watched their faces fall when I told them the "trick" didn't work.
So, let's debunk some of these iPhone myths and legends!
Closing apps reduce the speed of the iPhone or iPad: No. In fact, it can lower it and even use more battery when it is necessary to reload that app.
You should even out your iPhone battery altogether: [No!] While modern batteries are quite good at handling this type of abuse, there is nothing I recommend because it is possible to damage your battery this way (for example, if you empty it in hot conditions then it takes a place cold while in a discharged state).
MacDailyNews Take: There are many more in the whole article, but we picked out our two girlfriends:
• Don't force close apps that regularly try to speed up the iPhone or iPad. You only eat your battery life. Only if an app does not respond, you should force it to close *. (See also: No, you shouldn't be routinely compelling closing apps on iPhone and iPad).
Just use [iOS multitasking] as designed and you will be happy. You never have to quit apps. – Steve Jobs, June 29, 2010
• Do not complete your iPhone or iPad battery completely. In fact, try never to; The battery will thank you for better performance over a longer period of time. (See also: I used an iPhone X for a year and had 99% battery health – here's how I did it)
* How to force an app:
- On an iPhone X or later or an iPad with iOS 12 , on the home screen, swipe up from the bottom of the screen and pause a little in the middle of the screen. On an iPhone 8 or earlier, double-click the Home button to view your recently used apps
- Swipe right or left to find the app you want to force to close.
- Swipe up the app's preview to force close the app.
Note: When your recently used apps appear, the apps are not open, they are in standby mode to help you navigate and multitask. Again, just force an app to close when it doesn't respond.