Can I find my iPhone 5 if someone else restored it?

Can I find my iPhone 5 if someone else restored it?

If you mean using the "Find my iPhone" app, no. Once its been restored your apple account has been erased off the phone and that is how that app tracks it. You might be able to track it using GPS by calling your carrier but only if its a CDMA phone (Verizon, Sprint) or if it still has your sim card inside (Att or T-mobile)

Not on your own, find My iPhone won't work once your account is removed from the phone. Go to your carrier and report it as stolen. If your SIM is still in it, or it's a CDMA iPhone they may be able to track it down using the chip every cell phone has (this is how police can track them even with regular GPS off or phones that don't even have a normal GPS). Reguardless, at the very least they'll blacklist the IMED/MEID which means that the next time someone tries activating it, it'll show up as stolen. That's your best chance at seeing it again, but it's not a sure bet (the store might be lazy and not pay attention or the thief might live outside the US).