Galaxy Nexus: connectivity issues after the update? Several users of XDA Developers forums show a random problem and particularly annoying after updating their terminals Galaxy Nexus to version 4.0.4 for Android.
The device is thus suffered a loss of signal when in standby, making its owner unable to receive calls, SMS or any data passing through the cellular network. The situation returns to normal once the phone has been in operation, though the extent of the problem (if there is a problem) is currently unknown, let us know if you have encountered similar situations.

However, it will wait to obtain any official communication from Google or Samsung on the issue.