I passed the airport after an old lady called someone in a language I could not understand, so I had some theories, including the NSA that ruled my phone. Samsung Galaxy Note2 can not unlock after updating I have a NPC Android Tablet I forgot the password, how do I do a hard reset with just the power button and volume buttons. This issue can be very difficult to resolve, so if one of the above suggestions does not seem to work, try another suggestion in the article. If it works and the phone turns off completely, you should download the latest software, the latest app, or updated, new themes, etc. added to your phone and remove them, have removed the device. I have a Samsung Galaxy S4 GT 19505, when I wipe the screen, the phone goes off, what the problem? No factory reset on techno pattern locked mobile phone while I press the volume key and power button. I have an S5 and the screen is empty, but it still vibrates when you hold down one of the buttons and the blue message button appears after restart but with a black screen. Repeat step 1, but hold down the volume button and power supply also fails. How Do You Unlock An Iphone 7 more. 4. Hold both volumes up and down simultaneously and on the power button. January 22, 2017 at 1:00 my phone is completely black, the company logo will not even be displayed when I restart it, I have tried all the methods above, what else can I do. I have not lost or misused the phone - I have Pictures taken and tried to edit one, and it was imprisoned there - some suggestions so it will not be again. It may be that something like a file is corrupt or program, there may be a malfunction of the software or a virus (viruses are not common but they happen), probably something that has been picked up online or by a bad app or maybe It really, really, really bad luck.