I open the line play and they show this to me>service use will be restricted when programs are installed which allow you to change the device environment or are a threat to device security
- Developer: LINE Corporation
- Version: 3.2.1
I am having the same problem as well, tried to uninstall it and reinstall and still doesn't work :
I guess your phone is rooted, right?
Same for me ): I hope someone finds a solution for this.
LINE Play walkthrough
22 February 2013
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