I'm about to buy an Android phone from someone in my area. He already told me the IMEI. How can I ensure that I can unlock the bootloader ("OEM Unlock") prior buying the phone?
I've heard that I might have to wait 7 days until I can unlock the OEM, so I need to know the phone will be unlocked eventually, to avoid wasting my money. I have no use for the phone if the bootloader stays locked.