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My application has the ability to Wipe all contacts and calendar events. It has been working fine as far as we had not done stress testing. During this, it was observer that device brightness goes down when we execute following use case Sync Facebook, Gmail etc accounts with device so that there are lot of records in contacts and calendar. In our case we had about 477 contacts and 1500+ calendar events. Give Wipe command During wipe switch off the device and switch it on again. As per application design, it queries server if there have been any pending commands and starts the wipe again Now if I switch between application tabs, device brightness suddenly goes down. If I go to settings and check the level of brightness, it is not changed. We have not done anything in application that will change brightness of device. This is strange for us and not easily understandable. If anybody has any clue, please reply. First I had thought iOS might be changing it because auto brightness was ON. So if application is taking more processing job, it might be doing it for power saving. But issue persists even when auto-brightness is OFF. secondly problem is, this happens if I switch OFF n ON the device. So once switched OFF, I loose the debugging session. So difficult to find reason Note : by switch OFF - I mean complete turn off device. Long press power button, slide to turn off the device. Also crash does not occur if we perform the steps during wiping of contacts. It only occurs when we are wiping calendar events Adding more details. I get a crash also after which above issue occurs. Following are crash report details `Incident Identifier: 297BD243-B9D9-414F-A9FB-3C02CAAF8A89 CrashReporter Key: e2ff53439e90b377dadf9c750793f23cac739930 Hardware Model: iPhone4,1 Process: SpringBoard [293] Path: /System/Library/CoreSe

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