When I try to added the device UDID In the developer account loader has come for 30 min and got hang. When I logged in back to developer account device was added in the list.
I have added the device to Provisioning Profiles but unable to install the app in iPhone. Please help me to resolve the issue.
Are sure that you used correct mobile provisioning profile? Maybe you added UDID in portal but used old provision for the new build?
To check it you can:
If it is missed then you should rebuild your app using new provision profile from Developer Portal.