I am trying to execute the following code on my iPhone 3gs, with the OS version as iOS 4.2.1
#if __IPHONE_OS_VERSION_MAX_ALLOWED >= 40000
[m_coreLocationMan startMonitoringSignificantLocationChanges];
#endif
It somehow does not work for me. It works on my iPhone 4, but not on iPhone 3gs with iOS4. Does anyone have any insight into the problem?