Constant syncing problems with iPhone and Big Sur

Hey folks!

Unplug the cable to stop the repeated connecting and disconnecting behavior. If you don’t do it, the iPhone will warm-up and this surly doesn’t help battery ageing. Next, proceed as follows:

• Open the Finder app.
• Use its Search function, top-right corner and type Terminal.
• Copy/paste the following command in the Terminal window:
• sudo killall -STOP -c usbd
• Important: Make sure that the text is typed exactly as underlined above, maintaining the spaces.
• Press the Return key to run the command!

That’s it, your iPhone should be now able to connect to your Mac without any problem

Cheers

Drew

For what little help it may be, I find that right-clicking the device under locations gives me an eject option that works. Then it's a reboot of the device and a forced restart of finder so I can connect by cable at least once - after which wifi sync will work again.

Not sure, but it seems like it breaks every time either end gets an update.

I too am having the syncing problem between iOS 14.4 and Big Sur 11.2. Synch begins sometimes doesn’t ever start. The only thing that seems to work is rebooting everything. Sometimes twice. It will then work for one or two syncs and then not again.

Yes, Drew, this Terminal fix works most times, but the issue returns the very next time. There must be a final resolution. I have downloaded all latest versions IOS and Big Sur, spent hours on the phone with Apple Tech support, and it remains. Are we destined to sync only through Terminal now? Thank you for your support

After this terminal trick I can sync over wi-fi with no issues. But you are right: the issue returns if i use a cable to connect... Shame on you, Apple