how to screw wifi channels..

i wanted to change my wifi channel so that it my wifi is not detected by my friend's mobile and laptop(freeloader), i heard that some phones have issues that they dont detect wifi if channel is 5,9 or something like that

but his phone is really good galaxy s4 and hp laptop

i know how to block wireless settings(i use pc so that is good)

but any way that i can hide my wifi from mobile or laptop

my router is
beetel 450TC1
2 answers Last reply
More about screw wifi channels
  1. Why don't you use encryption or not broadcast the SSID?
  2. cuecuemore said:
    Why don't you use encryption or not broadcast the SSID?


    i dont know how to do that, if you can show me its picture(tutorial) then that would be cool
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