Share your experience!
Hi @Will08
I don´t have the device in question, but probably, if you change your name in the User Profile, the Xperia Assist will recognize it.
Go to
Settings > Users & accounts > Users
Then Select your user and you can change the name and even the photo.
Please tell me how it goes 
Hi @Will08
I don´t have the device in question, but probably, if you change your name in the User Profile, the Xperia Assist will recognize it.
Go to
Settings > Users & accounts > Users
Then Select your user and you can change the name and even the photo.
Please tell me how it goes 