SM-S911B is the Galaxy S23
The letter after the digits is the region: SM-S911B is the international version sold in Australia, and /DS means dual SIM.
For your Galaxy S23
Not sure what’s wrong with it? Diagnostics at Riverwood Plaza are free.
Free tools for your Galaxy S23Check it yourself
Where to find the model number.
Settings → About phone → Model number. Got a different number? Look it up here.
Cracked Galaxy S23? We fix it while you wait.
Screens, batteries and charging ports at Riverwood Plaza. Free diagnostic, no obligation.