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djneils98

macrumors newbie
Original poster
Jul 13, 2015
29
6
today got an Iphone 7 and a 2015 mbp 15 to replace another iphone7 and 2015 mbp 13

have successfully copied both new devices from the old ones but now when I plug in the iphone to the new mbp I get a message saying I need to update software which then doesn't work and the iphone beeps constantly as it is constantly reconnecting and connecting - the charge indicator going on and off every couple of seconds. It won't connect. It also seems to trigger airplay and the duet app?

If I try the phone on the old Mac it works fine
I have authorised the new machine and it's running the latest OSX

anyone have any ideas?
thanks in advance
 

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Have you tried a different cable? Ive had a few go bad, and they exhibit a similar thing with charging on/off every few seconds.
 
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