Tezawaly from Nanapho.jp has been spending plenty of time with recently announced Fujitsu – Toshiba's water proof IS12T. His latest post revealed Hidden Wifi network support interface which will soon be coming to Mango Retail build. Hidden SSID support wasn't included in the latest refreshed beta build for unknown reason but Brandon Watson confirmed yesterday that the support will come with Mango RTM. Apparently, the IS12T that Tezawaly has been playing around runs on build 7716 while the refreshed developer build is 7712, so the build being mention here is a step ahead of the build available to the developers but just short of RTM which is 7720. Read more after the break.