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iPhone Pairing Issue - Phone, Contacts, Favs, Messages

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I found a M3 thread that seemed like a similar issue but couldn’t find anything in MY. Perhaps you guys/gals can shed some light and maybe help with my problem.

I have a MS and my wife has a MY. Mine is under my Tesla accounts, hers under her own. Each has the other as an additional driver. Her iPhone 11 functions totally fine in my car (contacts, recents, favourites, messages - all work). My iPhone 12 Pro works fine as a key for her car, but when connected as the phone device, not so much. Contacts shows a mix mash of randoms, recents show weird random calls from ages ago, favourites is blank, and messages do not work.

My phone works perfectly in my MS but not so much on her MY. I wasn’t sure if it’s because I’m the “second” driver on her car or what, but a very annoying problem when I’m driving her car. Any help would be greatly appreciated.

I’ve deleted phone keys, repaired as phone device. Nothing.