Text messages.

[WKFD]

Since update,

My partner's phone is the note20, and mine is the ultra version.

When ever she texts me, I get it twice, but it's always 5 mins after but sometimes it's more or it's less. The most time as been 9mins. 

Anyone that could shed any light on this would be much appreciated

[BandOfBrothers]

This could be in connection to your sim card or mobile network infrastructure.

It maybe beneficial to have a conversation with your networks customer service's.

I've seen instances like this which usually clear up themselves.

I'm not aware of any setting or preference that would push a text message twice when using the Samsung Messaging App.

As a process of eliminationcan can you try the sim card in another phone.

I wish all the best. 

[WKFD]

Thanks for the input