Also try emergency fastboot with BOTH VolButton pressed down and Power…
If it doesn’t react to… maybe your phone is fried 
It shut down in 1 second.
And fastboot mode doesn’t work.
I think is fried…
Now, I stand an answor from FP support
If you’re sure that its not just the screen that’s dead, it honestly sounds like a core module issue. I wonder wether that’s a problem similar to the FP3 sudden death phenomenon.
If you still have warranty the best way to go is probably to contactsupport and get a replacement. If on the other hand you’re still looking to recover data, then some of the troubleshooting steps suggested for the referenced FP3 problem (such as performing a reflow to fix damaged soldering joints on the core module) may help, but beware that that’s rather a last-ditch effort than a first step and may also damage other parts if unsuccessful:
Thank you for your answer.
But, I will request a replacement from the support since I am still under warranty
would such a reflow void warranty?
Yes if it fails… Nothing I would ever recommend with warranty and even without waranty just with a warning…
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Since you still have warranty I’d only do this if there’s some critical data to restore that hasn’t been backed up and is really worth the risk. That’s the only thing you won’t get back if you opt for a replacement via FP.
What is this doing or showing?
Nothing, blank screen, it’s the emergency download mode from Qualcomm in case you bricked the phone
And that would not help you
That would at least tell you, if the device is still ‘somehow’ alive 
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Hi
My Fairphone 4 (bought new in May 2023) has crashed. It just wont switch on. Have tried charging it using different cables. Took out battery for 15 mins etc. The screen is completely black. No logos or red lights or anything. Was working fine earlier in day then I noticed screen was black and thought it just needed charging. I’m trying to get proof of ownership from BT/EE online shop where I bought it in May. As Fairphone have requested this before they can do anything. My life has ground to a halt without it. Everything is on that phone! I’ve seen msgs here about rebooting in recovery mode but a bit clueless as to how to do that…
Hi and welcome to the forum. I moved your post here as it seem to be the same problem, although there is no solution yet.Maybe @Duanra08 has an update?
@yvmuell and @helenreilly ,
I contacted the support and I await their return.
For the moment, no solution has been found.
thanks Duanra!. appreciated
shure that this isn’t the same issue like this one: https://forum.fairphone.com/t/black-screen-issue-after-android-13-update/100933/48
how often did this issue occur on FP4 before the A13 update?
There was no mention about the upgrade, and for the OP it happened 6 days ago while the update is out since 2 days.
Hi Helenreilly,
I received the return from after-sales service after sending my phone, they told me that the screen was broken even though the screen stopped working suddenly without any shock. …
In addition, he asks me to replace the electronic card at more than 200€ in addition to the screen… I don’t understand why if only the screen is broken…
I requested a second opinion
here is some news:
The subcontractor refuses to repair my phone because the screen protection is damaged!
My screen is intact under the protection…
The subcontractor doesn’t want to know anything… I’m at a dead end!
I am waiting for a response from Fairphone to my problem
In addition, they sent me a quote with photos of a broken screen which is not my phone! I find this shameful