I have an application in app-store. In My Application I use keychain to save some values(for example: name & surname) as crypted. If I use xCode to update my app , there is no problem about values. They are all saved in keychain as I want. But If I put new version into the app-store and updated my app with the version that is in appstore, My values are all gone :( Does iOS remove the values in keychain if app is updated ?
Note: On iPhone, Keychain rights depend on the provisioning profile used to sign your application. Be sure to consistently use the same provisioning profile across different versions of your application.
Check for more information Keychain Services Programming Guide