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The update isn't without its problems though. According to initial feedback from users who have already installed Android 2.3.6, the update has, in some cases, made the Voice Search bug "worse than before" and has broken the built-in tethering functionality. Users are reporting that, when enabling Wi-Fi and USB tethering, the 3G connection is dropped by the phone until tethering is disabled.
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http://www.h-online.com/open/news/it...S-1336597.html