Hi there Firstly I must claim that this is the first time I using a mailing list and I am not familiar with the rules here. As well I am not so good at English too. So here's my apologizes if I'm not able to claim the problem clearly. I'm now using CentOS 6.3 with kernel 2.6.32-279.19.1.el668. Recently I wanna transfer my work from WIndows 8 to Linux. One of my hobbies is developing Android apps(:-)So I am not a prof at all). Everything goes well when I install Eclipse, Android SDK, blahblah. But the worst thing was that I couldn't make ADB connect to my phone. My phone is Huawei C8812 which can be listed by lsusb as Bus 001 Device 003: ID 12d1:1031 Huawei Technologies Co., Ltd. And I followed the instructions on http://developer.android.com/intl/zh-CN/tools/device.html ,but it seemed not working at all. So I found another page http://www.cnblogs.com/116913829/archive/2012/02/09/2343996.html ,it couldn't help me ,either. Yet I have rebooted and restarted udev for hundreds of times, it just wouldn't show on the list of 'adb devices'.(Yes, I confirmed I turned the 'USB Debugging' on on my phone.) I am confused, can anyone help me? Thank you anyway. Harry Chen