My iPad Pro is new and I haven't set any security settings like face recognition, fingerprint, etc. My question is about the meaning of "locked" in the sentence: "iCloud automatically backs up your iPad daily when it's connected to power, locked, and connected to Wi-Fi." Will the daily backup happen if the other 2 criteria are met but there are no security settings (yet)? During the daily backup should the iPad be turned on? or off? Thank you.