They were onenote's files, research notes. Had problems with sync and lost files.
How can I recover the files in the safest way? It happened today. I already stopped using the phone.
(asking for a friend)
Recovering deleted files android 6.0.1 (internal storage)
Question
Answer
I'd try photorec (testdisk package) in Linux. Or the Piraform file recovery program in Windows. Get it connected to a PC sooner rather than later as you don't want the area it was stored to be overwritten.
Was the Onenote not syncing with a Microsoft account?
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Can't activate nor deactivate any administrator permissions outside of safe mode
Still can't change Google Play country
Is there a default "dark" theme (i.e. black background)?
Why failing to get notifications of Stackexchange app in Notification Bar of Andoid 6.0?
recover internal storage data from soft bricked phone (No custom recovery, USB Debugging option NOT turned ON)
When changing SIM card what needs to be copied or transferred from the old SIM card?
Is it possible to add the NFC to the phone which does not have it?
Cannot Re-enable developer settings after ROM re-install
Why are apps on Aptoide newer than the Play Store?
Can I charge my phone with many different charger speed types?
How do I disable the "Screen overlay detected" security bandaid?
Can I flash a separate radio image and have a working radio?
Why does Google Pinyin Input need to access my contacts?
What is protected apps in Huawei phones?
Nexus 7 2013 won't update to 6.x
LTE Bands for European Galaxy S7 (SM-G935F) while in the US
Nexus 5x media sound issue
Cannot send Audio files on WhatsApp
Defect in updated Marshmallow
Can't activate nor deactivate any administrator permissions outside of safe mode
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