Emails and contact updates following a phone upgrade

[Ian_467012]

Hi, I've just changed a Sony Xperia XZ3 for a Sony Xperia 5.  All my emails and contacts are now on my new phone, but any new emails are still are being received on my old phone too.  Similarly, if I try and delete a contact on my old phone it also disappears off my new phone.  What can I do to in effect stop the 2 phones from syncing?  Any help would be appreciated!

[MI5 · Accepted solution]

@Ian_467012 

Remove your Google account from the old phone and any email accounts.

You can then do a factory reset to wipe all personal details from it.

[Ian_467012]

Thanks for responding so quickly MI5.

I'll try that now.....

[MI5]

You're welcome