# App Preview iOS **URL:** \ **Category:** How-to Discussions\ **Created:** [October 31, 2015, 11:25pm UTC](https://forums.fusetools.com/t/app-preview-ios/6892 "2015-10-31T23:25:34Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![Jake\_Hare](https://yyz1.discourse-cdn.com/flex035/user_avatar/forums.fusetools.com/jake_hare/32/107_2.png) [@Jake\_Hare](https://forums.fusetools.com/u/Jake_Hare)\ **Post date:** [October 31, 2015, 11:25pm UTC](https://forums.fusetools.com/t/app-preview-ios/6892/1 "2015-10-31T23:25:34Z")
I’m just trying to run the simeltaneous preview on my iPhone 6, and for some reason xCode keeps giving me these errors: ![file](https://s3.us-east-2.amazonaws.com/fuse-legacy-forum-assets/XSIdFRqXKzxP-legacy-files-YF9xEH6E4hGuPmdD-M-hJs2XhAxJQmdcPDxqUQEk5.png) ![file](https://s3.us-east-2.amazonaws.com/fuse-legacy-forum-assets/FdMmTXVS14Sw-legacy-files-3sVz5hnjziurlIcO-9LPZvBQiv31INEvsiVdHJnZF.png) Have any thoughts? Here’s my xCode version: ![file](https://s3.us-east-2.amazonaws.com/fuse-legacy-forum-assets/MvgkP7V4GO1c-legacy-files-TpN8eZIXCtzADrSk-Fa3Yk3-IR1GSeUQfe9nkAUhT.png) ---
**Author:** ![lucasflygare99](https://avatars.discourse-cdn.com/v4/letter/l/e9bcb4/32.png) [@lucasflygare99](https://forums.fusetools.com/u/lucasflygare99)\ **Post date:** [November 1, 2015, 9:45am UTC](https://forums.fusetools.com/t/app-preview-ios/6892/2 "2015-11-01T09:45:04Z")
com.uno.SocialMediaMock has already been taken by another developer. So, you can change your identifier by going to project settings in xcode, then general. And there should be a “Bundle Identifier” that you can change. [http://i.imgur.com/A3cE3Nj.jpg](http://i.imgur.com/A3cE3Nj.jpg) ---
**Author:** ![Jake\_Hare](https://yyz1.discourse-cdn.com/flex035/user_avatar/forums.fusetools.com/jake_hare/32/107_2.png) [@Jake\_Hare](https://forums.fusetools.com/u/Jake_Hare)\ **Post date:** [November 2, 2015, 7:38pm UTC](https://forums.fusetools.com/t/app-preview-ios/6892/3 "2015-11-02T19:38:25Z")
You’re the man! Thanks Lucas!