"trust this computer" flashing

[pranaman]

I connected my updated iPhone 6S to my older MacBook Air (13-inch, Early 2014), running Catalina, ver 10.15.7.

The phone showed "trust this computer", and it keeps flashing.

On my MBA, it said it had to download something. I think it did. It went away. The phone keeps flashing the message.

I rebooted both, and tried different cables. Same thing.

Anyone heard of this?

 

[0128672]

Yes, that's the normal prompt when you connect your phone to your Mac. Here's more details you may find helpful.

About the 'Trust This Computer' alert message on your iPhone, iPad, or iPod touch - Apple Support

Learn about trusted computers and find out how to change your settings.

support.apple.com

 

[pranaman]

it's flashing, that is, it shows for 1 second, then gone for a second, then back and forth.
I know what it means, I've seen it before, but not like this.
It doesn't stay on long enough for me to tap 'trust', and if I do, it still keeps showing and disappearing, back and forth.

 

[arkitect]

it's flashing, that is, it shows for 1 second, then gone for a second, then back and forth.
I know what it means, I've seen it before, but not like this.
It doesn't stay on long enough for me to tap 'trust', and if I do, it still keeps showing and disappearing, back and forth.

Could it be the connection on one of the devices? If that is slightly loose it might connect/disconnect and so causes the message to flash on screen.

 

[pranaman]

I tried a 3rd cable, and it worked ok