After the iPhone 12 Mini was officially launched, some users initially stated in the discussion area that the unlocking situation would sometimes fail, and sometimes even clicking to pause or playing music would not respond.
Many of the affected users also used protective stickers, and in most cases there was no response when they used their thumbs to dial up. Sometimes even tapping the photography shortcut is problematic. However, it seems easier to unlock with other fingers. It is temporarily unknown whether it is a hardware or software problem, but it is estimated that it may be resolved through a software update.