SM-A057F is the Galaxy A05s
The letter after the digits is the region: SM-A057F is the international version sold in Australia, and /DS means dual SIM.
For your Galaxy A05s
Not sure what’s wrong with it? Diagnostics at Riverwood Plaza are free.
Free tools for your Galaxy A05sCheck it yourself
Where to find the model number.
Settings → About phone → Model number. Got a different number? Look it up here.
Cracked Galaxy A05s? We fix it while you wait.
Screens, batteries and charging ports at Riverwood Plaza. Free diagnostic, no obligation.