Can I get some help with an iCloud login problem?

[iMore Question]

icloud login problem...help

I just got used iphone 5s.
So i try to login to icloud with my apple id, the error has occured...
This is the message
"the maximum number of free accounts have been activated on this iphone"
So, i seached about this problem and they say if you have another ios device or mac, you can solve this problem.

-so is there anyone who can help me ? you just log in my apple id and log out. that's it
please help me