I have an iPhone 3GS JB that works very well and has got one of the best operating systems that are being used in it. Also I have the unlocked version of the Ultrasnow in it. I have been noticing out the problems that are being faced by me that am concerned by the Airplane and when it is being used in the Airplane mode of toggle and which is occurring in both iOS 4.0 and 4.0.1. So the problem is that whenever I turn on the Airplane mode that is being used in the SBSetting , the carriers and the bar changes in to the searching mode and then after some time a message is being displayed that No service is being displayed. Please tell me the required solution for this.