Identify your iPhone model - Apple Support (MY)
https://support.apple.com/en-my/HT20129623.09.2021 · Model number on the back cover: A1324, A1241. Details: The back housing is made of plastic. The imprint on the back of the phone is less shiny than the Apple logo above it. There's a SIM tray on the top side that holds a "second form factor" (2FF) mini-SIM. The serial number is printed on the SIM tray. See the tech specs for iPhone 3G.