I have developed my app in Xcode for iPhone, in start I have just named it without secnec now I want to change my app name I have replace my old app name with new one as I h
ohho's answer is perfect:
For Xcode 4 or later:
Open a project
Select Project Navigator
Highlight project name
Single click on project name
BUT, if you only do this, once you try to debug on a new device, you will find an error:
file not found: /Users/someuser/Library/Developer/Xcode/DerivedData/OLDNAME-akbwbarcniqxytctbebckkelkbxs/Build/Products/Debug-iphonesimulator/OLDNAME.app/OLDNAME
clang: error: linker command failed with exit code 1 (use -v to see invocation)
Then you need to do one more step:
Good Luck and Have Fun