problem can't detect wifi hotspot my S3!

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http://forum.xda-developers.com – help my samsung galaxy s3 can't connect or can't detect wifi hotspot why? i have NOKIA N9 and i used it as wifi hospot to my sony vaio and it can connect to my wifi hotspot and other phone but my samsung galaxy S3 can't? :( samsung galaxy S3 unlock original firmware un-rooted android version: 4.0.4 baseband version: I900XXLFB build number IMM76D.I900XXBLFB (HowTos)