Yes this is another one of those threads, but basically its all combined into one thread. Basically this is just a simple thread about speeding up your iPhone or iPod Touch or iPad, mainly on iOS 4.x(some applies to 3.1.x). Many users have noticed slow downs when upgrading to iOS 4.0, mainly 2nd gen devices. Apple released iOS 4.1 to fix the slow downs, but it was either a hit or a miss. Some users noticed some speed improvements, while others were unaffected.This will help more so with older devices This guide will help you speed up your iDevice. Note: No particular order 1.) Perform a hard Reset on your iDevice. Hard Resets clear your cache and ram. This is helpful after installing a new version or a big application. Do this by holding sleep and home button for 10 seconds. Some users have reported doing it more than twice helps. 2.) Turn off Spotlight. This is a app that lets you basically search for something in your contacts, apps, mail, etc. It is something i don't use and i am sure others do not either. This sped up my 3GS, and made a difference on an iPhone 3G. In 3rd gen or above its in Settings > General > Spotlight search, 1st gen to 2nd is Settings > General > Home button. Uncheck all of them. Unselecting only a few will not help as the Spotlight app is always loaded into Ram. 3.) Delete unnecessary things. Empty out your mail(delete read msgs , sent mail, spam, trash, etc), messages, phone recents and voice-mails, Weather cities, stock entries(ones you do not need/use), safari bookmarks, photos, statistics, and apps you never use. All of these are loaded onto start-up, the less there are the faster your iDevice boots up, and slightly faster general use. 4.) Clear history, cache, and delete opened web-pages in Safari. When you do this, safari becomes faster/more usable. You could also clear history in you-tube app. 5.) Merge contacts that are the same people. I've seen people who have several of the same Contacts. Example, Say there is a dude name John Lott, there are 3 entries, 1 being cell phone, home phone, and work phone. I think that shows laziness to me. 6.) Reboot your iDevice at-least every two days, preferably once a day. You should know why this helps. This helps the iOS stay maintained. 7.) If your device has multitasking, delete them by double clicking the home and press the - button. You should do this everyday, before you got to sleep. These are kept in Ram, which can slow your iDevice down. 8.) Reset all settings. This clears your, network, keyboard dictionary, home screen layout, and location warnings from cache. 9.) This is sorta of a last thing step if none of the above helps. Erase your iDevice by restoring through iTunes. You should backup, then erase, then restore from the backup. If restoring from backup does not help, then you should just start clean and manually sync your contacts, apps, etc. After doing this, do some of the steps above to speed it up more. I hope this helps your hogged down devices. If you have any more advice, tell me and i will add it to this guide. Do not spam this thread saying so and so does not help when you havent even tried it on your device. I Have tried this on 9 Devices, 3 being my own, the rest on friend's devices. Post a reply if this helps you at all.