hi ! emilienrh
we read that very first post you wrote and when you mentioned a repair shop you made inquiries with, then confirmed logic board is damaged however, we don't know them [ we don't know that repair shop you went to ] and we don't even know where they are, in fact, you may as well be in a better position to evaluate their expertise but we can't trust that repair shop , and quite simply because we have no clues whether they're actual experts.
now ... we know your USB cable [ data cable ] and charger work and next step is to eventually establish whether your smartphone " suffers " from a battery issue or something more serious with the logic board needs replacing. depending on whether that repair shop you went to, has actually taken your smartphone apart in front of you then you may be in a position to also make that assessment, to learn and understand whether they have given you back your own smartphone, rather than someone else's while also allowing them [ that repair shop ] to extract those working components from your actual handset.
NEXT:
we wouldn't advise you to break a smartphone into pieces yourself though, battery replacement may be operations to be performed by a repair shop with actual experts and yet the logic board replacement also requires a second and identical handset [ a smartphone by the same make and same model ] also, expert hands are yet required to fit the new logic board.
consider in addition, depending on how much money and
time you're willing to spend while trying to recover [ repair ] that handset you now own , you may want to start searching for battery replacements and then eventually also search for a second-hand smartphone you will need to swap logic boards [ try eBay ]
this last step above described though, is very much depending on factors that only you may consider with a appropriate manner, for instance... you may also take into account the urgency for a replacement handset, unless you already have a spare one you can use for a few weeks.. if you only need to replace the battery , you may then be able to also achieve data recovery and given some information in the smartphone were not backed up in the cloud in addition, other conditions you may consider are the " value " or money you paid when you made that purchase of your own smartphone and yet also consider for how long you had that device.
briefly ... your
job requirements always play a " big deal " when making decisions to just buy a new phone or making attempts to repair the one you have already.
An phone reparator confirmed.
