1/ Check the Weather quickly using Spotlight — If you’re curious what the weather is like, you can launch the stock or a 3rd party weather app, sure, or just pull down on a Home Screen page to get Spotlight (device and ’net search) to appear. Type in “weather (and location)” to get the weather report for that spot. You’ll get the details you’re looking for. The same applies to any day within the normal seven-day forecast period. This Spotlight trick works on iPad, too. (It even works on macOS in Spotlight.)
2/ Delete all Reminders in a list — Sometimes, you want to quickly delete all reminders in a list. People use the Reminders app as a catch-all for everything we want to remember, whether it’s work-related or a group of tasks we need to cary out.
Within iOS, there’s a way to delete not only the list, but also all the reminders within that list. This works for things you’ve marked as completed, along with tasks that you haven’t tapped to show them as done. Launch the Reminders app and navigate to the list you want to delete.
Now, tap the Edit button in the top right corner of the app.
Scroll to the bottom (if you can’t see it it) and find the item that says Delete List.
Tap that option and confirm you want to delete all the reminders. (This is a viable on Mac too: secondary click (right- or Control-click) the name of the list and choose Delete. If you are working in iCloud.com, you can go to a Reminders list, click on Options, and then choose Delete. When you delete a Reminders list from one device, that action will take place on every device logged into the same iCloud account.
3/ Night Shift Mode into Staying on All the Time — You can have Night Shift on iOS on all the time if you prefer the softer lighting (it’s more yellowish) of Night Shift mode all the time. Night Shift is most useful after sunset, you may want to have it enabled all the time. This display-based setting makes your screen “warmer,” usually at night, to cut down on blue light exposure which is believed to keep people awake. To get to this setting: Settings> Display & Brightness> Night Shift. The default is to have the mode activate at sunset, and then deactivate at sunrise but you can also set custom start and stop times for the mode.
To keep Night Shift on during the day, you need to set custom hours for the feature. Unfortunately, you can’t set the start and stop times the same so you have to decide on a one-minute time of the day (or night) when it’s okay for the mode to briefly deactivate: for example, Night Shift could temporarily stop at 1:59am. Then, the mode turns back on at 2am.
4/ Set your default Calendar across devices — People can find their Mac set to add events by default to one calendar while their iPhone is adding them automatically to a different one. This can make it seem that iPhone events are colour-coded differently to Mac events, which is confusing.
All your Apple devices that can sync with your iCloud account have a “default calendar” setting that’ll be applied when you don’t specifically change which one you’d like to add an event to. On the iPhone and iPad, this option is listed under Settings > Calendar. On the Mac, this setting is within Calendar > Preferences under the “General” tab.
5/ Dealing with other calendar services — When a device is set to sync to a calendar (say, a Google one) and that particular calendar isn’t even configured on another of that person’s devices, it will make it seem like everything from one device is disappearing. You can check which accounts you’ve got set to sync calendars on the Mac under System Preferences > Internet Accounts.
Any of your accounts that have “Calendars” listed in grey underneath their names are syncing that service with your Mac. Verify that you’ve got the same list turned on for your iPhone or iPad at Settings > Calendar > Accounts.
Extra – The Health app: as Apple Insider puts it in a detailed explanation, the launchpad for all things is the Health Data tab, which lists all of the categories the app can handle. While Activity, Mindfulness, Nutrition and Sleep are front-and-center, others include Body Measurements, Health Records, Reproductive Health, Results and Vitals. These all break down into numerous subcategories, where the real meat of the app is found. Under “Activity,” for instance, are items like steps, workout duration, and active energy consumption. Tapping on one displays a graph with adjustable views, as well as an explanation, suggested apps, and a set of configuration options.
Extra extra — the logic of iPhone/iPad Force Quitting: The Mac Observer has a detailed description of why and when you may need to do this, and when you should’t worry.