three mobiles phone have dead after what is the problem ? here the status of operation all good !!

Question

Answer 1

Hello, please add more details and full logs of operations

Comments

the phone was stuck on the android logo , so i  tried to flash it but the phone  totally dead   , that was the third to dead during two days .

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i pressed clear log db and clear profiles db in samsung tool pro? could be the reason to broke the programm?

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tthis full log for another dead mobile , please help me what is the problem

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Unfortunately, this is a typical problem for spreadtrum cpu based phone models j320h, j100h (also found in g531h), and this don't depends from tool that you are using for flashing.
 If your phone cannot boot to download mode - solution only repair boot via isp with easy jtag box.

https://youtu.be/1PjCxGxo9YA