this sounds similar to Windows 10 don't recognize my Fairphone3 via USB however it’s a different issue.
I finally got around starting to set up my FP3 - or at least I thought so…my laptop, which is running Windows 7 Pro, successfully installed drivers when I first connected the phone via USB cable (the USB cable from the Fairphone shop, by the way), but nothing shows up in the explorer. When I check under “Devices and Printers”, it’s listed under the category “Not specified” as “FP3”, with the properties showing it’s in device category “Unknown”. The driver Windows installed automatically is called “Google Nexus ADB Interface”, and it further says “This devices works without issues.” (or whatever the equivalent wording in an English-language Windows would be).
I’ve worked through this - https://www.makeuseof.com/tag/android-wont-connect-windows-adb-fix-it-three-steps/ - but to no avail. I downloaded ADB drivers elsewhere and tried installing them manually, that didn’t help either.
It’s definitely a software problem since I connected it to my work laptop, which runs Windows 10 Pro afterwards and voilà: It worked perfectly fine. I looked into the Device Manager there and the driver is called “ADB Interface”, came directly with the OS (since the laptop wasn’t connected to the internet).
Any ideas how I can get my phone to show on my private laptop? I haven’t looked for an “ADB Interface” driver for Win 7 yet, will do that tomorrow…
Any suggestions are welcome.