LEFT MY PHONE AT A FRIENDS HOUSE BUT I WANNA MAKE SURE NO ONE CAN SIGN IN HOW CAN I CHANGE MY PASSCODE ON IT
left my phone at a friends house I wanna make sure no now can sign into it how do I change my passcode
iPhone 12 Pro Max, iOS 14
Are there people there that know your passcode? See this, Use Lost Mode in Find My iPhone on iCloud.com - Apple Support however if you already have a passcode on the device, I'm not sure if you can change it or not. But putting your device into lost mode will prevent entry.