Hello

following my previous post there were few solutions oferrd by @Kevin_Z  Which I tried them all.  No change - the WIfi signal at all my mobile phones keeps being very weak and unusable, in opposite to my Laptops which use internet sussessfully .

I tried to change the channel - as was suggested, unfortunatlly the last channel offerd was 13. 

please advise as for what can be done. 

Thank you