I have now upgraded to IOS 9.3 and was trying to lock some of my Notes. I created a note, placing a few blank lines between the title of my note and my text to be hidden. I hit Done to save the note, then re-opened it. I selected Share Note, as per other posts on Applevis, but cannot find a Lock Note option. I do get a message, saying that no Airdrop recipients are nearby, however, no option to lock my note. I have been in settings and have set up a password for Notes. Does anyone have any ideas? I'm based in the UK.