Can anyone help me. I have an xperia xz premium. Before, my device, had a problem which are can't detect for wifi and mobile internet. So, since it is still under warranty, i sent it to the partner office, which is not sony related company i think. The time take to fix the problem is 2 months. For the first time after the fix, i gone to pick up, and start the phone. It says that cannot check for software corruption, need to unlock the bootlader. And About 3 days after i pick up the phone, the phone begin to be crazy, some buttons such as volume and power button also fingerprint mounted to power button has no respond. Sometimes there are respond but not for long. But before the buttons has no respond, the device fell from my hand which is 0.5 meter i think. But i think, the problem is an unlocked bootloader.
What should i do?
Looking forward.