The whole phone seems to be in some sort of "simple mode", most applications like play store are non existent. The settings seem to be much simpler, without options such as "install from unknown sources" etc. I can't even enable bluetooth or browse my files. I wanted to enable USB debugging to flash a new custom rom, but I can't turn on the developer options. I also cannot enter the fastboot or recovery mode.
Please help me.
Restart the phone. It's possible that you have started the phone in "Safe Mode" or "Demo Mode". Or, even, you have the "Guest User" activated.
I have restarted phone hundreds times, I also trying enter recovery or fastboot and I can't.
Well. What is your model of phone? I would say to you phoning or writing to Support for a check of your phone. But I need to know that info.
It's Aquaris X.
Good. Contact directly with Support:
Try to read this thread, I think you could be in the same case: