The iPhone's "low power mode" is a useful feature that extends the battery life to about 1.x to 2x just by enabling it. Although there are disadvantages such as a slight restriction on the processing power of the iPhone, it does not affect daily functions such as telephone, SNS chat, web browsing. It's a great feature for those who want one or two hours more.
Even in such a thankful low-power mode, there is a big enemy who inadvertently forgets to enable it. It will warn you when the battery is 20% low, but switching to low power mode from there will not significantly increase your usage time. All you have to do is open the Control Center when you have plenty of battery power left, but forget it when you are in a hurry.
Unfortunately, you can not always activate low power mode, but with the “ shortcut '' app added in iOS 13, the low power mode is automatically activated when you leave a specific place such as home or work I can do it. If you don't forget to charge, you won't have to worry about running out of battery.
First, launch the "Shortcut" app, open the "Automation" tab at the bottom of the screen, and tap the "+" button at the top right. On the next screen, tap "Create personal automation", then tap "Departure Example:" When you leave work "" in the travel field, and then tap "Select" in the location field on the next screen. Is specified.
When you advance the screen, "Add action" is displayed. Let's search for the keyword "low power". The action "Set low power mode" (function unit in the shortcut app) appears. Tap this to complete the automation.
Then just take your iPhone out. Several tens of meters away from the point of departure, a dialog will appear prompting you to enable low power mode. It works even when there is plenty of battery power left, so it's safe.
Easy explanation of operation procedure