When you connect your iPhone to a Mac or Windows computer, you can see the connection on the screen of your smartphone. Usually it appears once and no longer disturbs the owner of the device.
However, in some cases, when a message appears about connecting gadgets to each other. Now let’s figure out what this dialog box means and how you can open it.
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When the message “Trust this computer” appeared
This usually happens the first time you connect your iPhone to your computer with a cable. You can choose a PC to read data from a smartphone or refuse it. In the latter case, the smartphone will simply be charged from the computer and is unlikely to take into account its information.
Regardless of the solution, you should not create a local iPhone backup, sync contacts, photos and videos, access available smartphone content.
If you issue a conclusion, the iPhone and PC created the intended pair with the confirmation key saved on all results. When connecting trusted devices, the dialog box will not appear.
When more than 6 months have passed since the last connection of the smartphone to the computer, or one of the gadgets was reset / system restored, as a result, re-permit is issued.
How to Delete iPhone Joins to PC
1. Availability of software updates. All problems can be fixed by software patch or new public program iTunes on the computer.
▶ Perfect for iPhone Settings – General – Software Update and expect that the gadget has the latest up-to-date version of the system.
▶ On a Mac with macOS Catalina and more System Settings – General – Software Update and install updates.
▶ On a Windows PC, download and install the latest package iTunes from the official Apple website.
2. Reset trusted devices on iPhone. For this you need to go to Settings – General – Transfer or reset iPhone and installation Reset.
In the menu that opens, select the item Reset geo settings. The system will lose geolocation and privacy settings for all applications, and the smartphone will also forget all trusted computers.
After that, you again need to connect to the desired PC and issue permission.
3. Reset the exclusion settings on the computer. To do this, connect your smartphone to a PC and run Seeker or either iTunes (on Windows or older version of macOS).
In the General section, find and click the button Relinquish protection. After that, be sure to reconnect the iPhone to the computer again.
Source: Iphones RU

I am a professional journalist and content creator with extensive experience writing for news websites. I currently work as an author at Gadget Onus, where I specialize in covering hot news topics. My written pieces have been published on some of the biggest media outlets around the world, including The Guardian and BBC News.