Since I have no cwm and no external sd, I tried xposed modules to personalize my n9510.Installer work without a hitch,did a "reboot" to activate. Download a module and did a "soft reboot" since I was going to download another module, phone stuck on 4g lte splash screen for over twenty minutes. Power and volume buttons did not work.Finally said f**k it and took the back cover off and removed battery.Put everything back together and phone power up fine. Zte 4g does not like "soft reboot".