How to Disable Making Calls When Device is Locked (Bluetooth Headset is Connected)
When you have a Bluetooth headset connected to your Android device, making calls is allowed by default even if the phone is locked. To disable making ...
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If you already own an Android device running Android 4.4 KitKat (Let' say Nexus 5), you have noticed lock screen widgets are not enabled by default and like on Jelly Bean 4.2 and 4.3 devices, you can not just drag to left in the lockscreen and add widgets. To enable adding lock screen widgets on KitKat 4.4, do as follows:
1. Open Settings application
2. Go to Security
3. Scroll down and make sure to mark "Enable Widgets" option to be bale to add widgets on lock screen