Why are my calendar alerts SUDDENLY showing up on my wife's phone too?

[userGcEzOayWkU]

We both have Galaxy S20's.

[LongHiker]

@userGcEzOayWkU Are both your phones using the same Samsung account and/or Google account? This is usually the cause. 

You can check which accounts are on each phone by going into settings -> Accounts and backup -> Manage accounts. 

[userGcEzOayWkU]

Thanks for the suggestion, but no, I just checked.

[Sparrow7]

(You may want to change your account passwords.) But the realistic answer is, ask your wife to go to her Settings > Accounts, and check to see if any of your accounts are listed there. Sorry if this has already been said. Just an idea.