Most ZTE Blade A34 hard bricks leave the phone in Qualcomm Emergency Download (EDL) Mode. The screen is black, but the CPU is waiting for a command.
Your PC cannot talk to a dead phone without drivers. How To Unbrick ZTE Blade A34
If you suspect a minor glitch but want to save photos (that aren't backed up): Most ZTE Blade A34 hard bricks leave the
Unbricking a ZTE Blade A34 requires careful attention to detail and the right tools. By following the steps outlined in this report, you should be able to successfully unbrick your device. However, be aware that unbricking may void your device's warranty, and there's always a risk of further damage if not done correctly. Unbricking a ZTE Blade A34 requires careful attention
If you can see the ZTE logo but can't enter Recovery, you might have Fastboot access.
A “bricked” ZTE Blade A34 usually falls into one of two categories:
Below are methods to revive both situations.