Q: Getting error in my device while signing up to ICloud. The same ID's is working well in downloading itunes

Hi Maninder Singh Golar,

Thanks for visiting Apple Support Communities.

If you can use your Apple ID to sign into the iTunes Store, but not iCloud, see this article for some troubleshooting tips that can help:

iCloud: Account troubleshooting

http://support.apple.com/kb/TS3988

Cheers,

Jeremy