I recently started getting the "Invalid SIM" warning on my lock screen and in the status bar. The weird thing is that I still have service. Sometimes rebooting fixes it, other times updating the network profile or PRL will make it go away. Any ideas why this is happening?
You need Real-World Battery Saving Tips for your Android device. Our … more
20 Sep 2014
By Jimmy McGee
XDA Developers was founded by developers, for developers. It is now a valuable resource for people who want to make the most of their mobile devices, from customizing the look and feel to adding new functionality. Are you a developer?