To get Cydia on you iPhone, the phone will need to be jailbroken. It depends on what generation iPhone you have and the firmware installed.
Every iPhone on 4.1 can be jailbroken using pwnage tool, redsn0w, greenpois0n, or limera1n.
I personally have an iPhone 3GS with 4.1 jailbroken with limera1n.
Cheers
First, go to the Home screen on your iPhone. Find the Cydia app and open it. When the app opens, find the menu bar and open the Search tab, which shows a picture of a magnifying glass on it. In the search box, type "cydelete"; this is the program that you will need to delete Cydia from your iPhone. Hit "Search" and when it finds it, tap it. Confirm that you want to install the program onto your iPhone and then wait until it's downloaded. Then close out of everything and go back to the Home screen of your iPhone.
Once you're back at the Home screen, you'll need to find the third-party app that you used to download Cydia onto your iPhone, and then delete this app to delete Cydia. To delete this third-party app, tap on it and then hold it down until you see an "x" appear in the corner of it. This will tell you that the app has been deleted from your iPhone.
Yes you can! You have to download an app from cydia (irony :P) its called Cydelete you can delete cydia and app from cydia I believe
All u have to do is delete EVERYTHING there is in the "installed" section and it just disappears!
Simply update ios
go to cydia, manage, packages, bitesms, modify, then remove
Jailbreak your iPhone
you go on a website called jailbreakmatrix
No
Yes but your iphone has to be jailbroken and have Cydia.
I believe it is the same thing.
click on Restore in Itunes
Yes, if you restore your iPod or iPhone on iTunes it will delete Cydia. The restore function on iTunes restores your iPod or iPhone to its previous settings.
Don't download loads of apps. Cydia alone will most likely not crash your iPhone, but installing many apps increase chances.
No. These are apps that you get when you jailbreak the iPhone.
If you jailbreak your iphone, you can get a package called "frash" from cydia