Are two possibility to make recovery
One is reading emmc (memory) in motherboard (without unsolder)
Second is reading emmc (memory) out of motherboard (with unsolder)
Not every cellphones have pinout from memory on motherboard. Then emmc have to be unsolder and read in special adapter or direct connected to programator.
Also not every memory is possible to read or like iphone, possible to read but not possible to uncode the information. So date is not useful.