For me, no hissing problem on the charger.. and no lagg..
i tried to change the DNS setting in my router to Goggle dns 8.8.8.8 or 8.8.4.4. channel 11.. I asked Samsung "Is the exclusion of channels 12 and 13 from the range of possible Wi-Fi channels due to Samsung hardware limitation, or Google Android 2.3.4 limitation?"

The reply from Samsung was "Unfortunately it is the limitation of the Android 2.3 . " it works but it seems slower than 3G and sekejap ok sekejap K.O.. why ar????

heres a one by one with pic how to change.

First you need to connect a lan cable rj45 to ur laptop or pc lan connector. Locate ur ip address for your wireless router. Open a browser and type your Ip. Router's IP can be found in the instruction manual given in the routers box given by UnIFI.

If successful you will see this page:

[attachmentid=2563699]

step2:
go to ADVANCE tab>DNS>DNS config.

[attachmentid=2563700]
step3:
go WIRELESS tab and change channel to 11.
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