• Previously, if you launched the Notes App and you had no notes saved, the app would automatically open a new note and the keyboard would pop up. It no longer does that. If you have no saved note, it just says No Notes. (found by cypriote)
• In Maps, directions are smoother. The next direction slides in nicely and has the distance to the next action PLUS that action on the same screen, as shown below. Previously it would've said on action 6 "Drive 63.3 Miles"...action 7, "Continue on I-91 N...." (found by Marvin1379)
• Playlists starting with spaces and/or dashes no longer appear at the top of the list in Music. (found by agentkow)
• Any favorites you may have in the old YouTube app can be merged into your YouTube account when you sign in to the new YouTube app. (found by agentkow)
• For Exchange the old "Passcode Lock" feature (required by some IT departments) had delay times of up to 15 minutes where you would not need your password to get to your phone. There is now a 1-Hour option and a message about longer times being less secure. (found by CinciJeff)
• when you enter safari and you reconnect to wifi the screen grays out and says "Connecting..." (found by ChrisWilder07)
• you can now download apps redeemed from promo codes on the device. previously you could only redeem them and had to download them in iTunes
• If you had a Safari Bookmark on the home screen, and the website didn't have it's own icon when you made the bookmark, if the website ever does get an icon, it will auto update on the home screen (found by iPhone Chicago)
• in Stocks if you "swipe" the mini-graph left, then a more detailed stock quote will show up with Open/High/Low/Volume/PE/Mkt Cap/52w High/52w Low/Avg Volume/Yield...and if you swipe another time to the left then news for that stock comes up and the news is scrollable in the vertical direction. (found by iPhone Chicago)
• when exiting an app, the minimize effect now has shading to make it seem more like it's disappearing into the distance. (found by Cousin Dirk)
• when call forwarding is activated there is now an icons next the the carrier name (found by xxSpudxx)
• in Stocks the right side of a stock quote, when tapped, used to toggle between value change and percent change. Now it also includes market cap. (found by dejo)
• in Messages, the "Send" button is now grayed out until you start typing (found by msmith2112)
• The keyboard letter keys are a few pixels narrower than in the last OS, and the spaces between the keys slightly wider (found by smythey)
• Mail preview loading is much faster (found by jinjo235)
• You can now share a contact (found by jinjo235)
•You can now add 20 places to weather (found by jinjo235)
• Messages, Phone, and iPod have a new icons ( Messages found by jinjo235)(Phone and iPod found by macfreak93)
• Unknown incoming calls show the location of the call (found by jinjo235)
• if you start a movie/tv show on wifi. and go off the wifi network. itll finish over 3g. (found by furtherout)
• You can send as many pictures as you want in Mail. usually you can only "share" 5. this still holds true but with copy and paste you can copy as many photos as you want into the mail app. (found by ThE.MeSsEnGeR)
• photos no longer turn upside down (found bymacintosh.apple)
• Podcasts are now sorted in ascending order by date/time stamp. (found bysanPietro98)
• When you attach a photo in mail, you can magnify it like you would text. Just tap and hold on the image. (found by MigsVuitton)
• In one of the last iPhone OS updates Google Maps changed by default from Miles to Km in the UK and the only way to change it back was to change your region. This has now been fixed. (found by saracen)
• When logging on to a secure website the Name of the site turns green and has a lock on it. (found by TSX)
• messages now has its own tab in the settings along with store. (found by crazychris3992)
• you can close apps while they're opening. previously you had to wait until the app was fully loaded until it would close (found by vassillios)
• when apps that play audio are closed, the audio now fades out instead of abruptly quitting. (found by vassillios)
• international keyboards are now more accurate (found by HPRK)
• Time elapsed and time remaining in songs, podcasts, etc. are now always displayed in double digits. For example it will display -02:45 instead of -2:45. (found by MacGeekDC)
• At the end of one video podcast episode it will now play in the next episode available in the videos section of the iPod app. (found by MacGeekDC)
• The iPod app "scrubber" now is outlined and glows when selected with little directions under it that explain what to do. (found by MacGeekDC)
• when you bring up playback controls and hit play when nothing is playing, it will automatically shuffle your songs. previously it played them in alphabetical order. (found by tejaykay)
• When the is iPhone vertical, videos played through the iPod app will fit to screen. In 2.X they always played as if the iPhone was horizontal. (found by MacGeekDC)
• you can zoom further into photos in the Camera Roll then you could with 2.0. (found by Fibbons)
• iPhone 2.2 would search your Exchange global addressbook, if you started typing a name into an email's To: field, but now you can search the global Address book directly from your Contacts app, and get telephone numbers too! (found by memesmith)
• You can now select which folders to push from MS Exchange so you can have folders other than inbox synced (found by TedIsraelson)
• Previously TV episodes within a season were listed on the iPod in reverse sequence (eg. ep3, ep2, ep1) - but now they are listed in the more usual ascending sequence (ep1, ep2, ep3, etc). (found by bartonnen)
• TV Show seasons are now grouped together into one group. (found by Slayerboym88)
• when using the camera, if you tap on the previous photo (bottom left) and go to the flimstrip, you can select "Done" to go back to the camera. (found by iphones4evry1)
• The App Store now shows your current account on the bottom of each search page. Clicking on it will allow you to sign out or login to view/edit account information. (found by T3hPreacher)
• When you buy something from the iTunes App, the purchase now goes into your general iTunes purchases list, instead of a specific "iPhone purchases" list. (found by Slayerboym88)
• 3.0 has LDAP Directory support. It now searches through my company directory as I'm typing a name or email address. (found by Tenorsaw)
• You can now type a second SMS message while the first is in the process of sending. (found by cocky jeremy)
• when typing lol auto correct no longer makes it LOL (found by palckofv)
• You have the option to forward a contact on to someone now when you view their contact details. (found by higgalls)
• on previous versions, whenever you restored from a back up, the original apple applications would go back to the position they were at before the restore but the app store applications wouldn't. now, app store applications go back to their position from before the restore
• applications no longer install on the first page, even if you have an open space. it automatically goes to the next open space after the first page
• when moving icons on the home screen and you move an app to a different page, if you keep the icon to the edge of the page it will go on to the next page. previously you had to move the icon away from the edge before you could keep moving it to other pages.
• in music if you go to Artist->Album, then the back button on the top left displays the artist's name, rather than just "albums" (found by clearchaos)
• it shows which phone (mobile, home) or location (Orlando, FL, etc) you dialed under the number or name in Recents (found by TheMBC)
• Recents now also display whether or not the call was incoming or outgoing in the list (found by abiyng87)
• Voicemail also displays what phone the voicemail is from (mobile, home, etc) or the location (city, state) (found by abiyng87)
• Clicking an iCal link (subscription calendar link) will ask you if you want to subscribe to that calendar (found by jman240)
• you can control the speed that thing rewind and fast forward by moving your finger vertically along the screen while scrubbing horizontally. different heights on the screen are different speeds (found by dpierre)
• Safari now has a phishing warning (found by rorschach)
• In Settings-Phone you can edit 'My Number' so it displays at the top of your contacts list (found by Vundu)
• You can send pictures to emails using the Messages application, just type in the email, input a message (if you want) and attach a picture (found by acfusion29)
• There is a new iPhone setting under phone numbers in the contacts. It still has home, mobile, work, etc, but also now has iPhone (found by Excellerator)
• now there is a different way to force quit apps. now you have to hold the sleep/wake button until the red slider appears, then you hold down the home button to quit the app (found by magnum0pus)
• the push notification settings for mail have been moved to the mail, contacts, and calendars menu in settings instead of being on the main settings menu
• you can now have 11 home screen pages instead of nine
• when a text message is recieved and you do not "Slide to view" but want to look at it later, when you open the messages app it will open up to the latest received message (found by Acronym)