Sim not supported
I just bought an iPhone se thatbit was sim inlocked i put my sim in the Phone and it Wont set up i get a messege tjat says sim not supported how van i fix tjis problem
iPhone SE, iOS 15
You need to get the iPhone unlocked. That message means the iPhone is locked to a carrier that is different to the one the sim card is for.
See here for how to unlock it: link-> How to unlock your iPhone for use with a different carrier - Apple Support