[OnePlus 7 Pro Guides, News, & Discussion] famewolf:
Well some tips...the t-mobile models are roughly $150 cheaper than the international ones on swappa.com for the same condition. Phones with mild to semi serious screen scratches can be "fixed" by putting on a glass screen protector that used UV reactive glue. The glue fills the gaps and you won't even be able to tell there are scratches afterward.

If you get a phone with lcd burn in using the system wide dark theme will pretty much make it ignorable except for the occasional page. Sometimes the ones with scratches or burnin are another $150 off from the going rate (for example I recently picked up one with burn in but a perfect screen for $205 where the going rate for a goog-mint one is still around $340+).

I switched my non rooted phone to the EU version firmware from international and it also worked without issue. The repo for all Oxygen os builds is here: https://xdaforums.com/t/oneplus-7-pro-5g-rom-ota-oxygen-os-repo-of-oxygen-os-builds.3930585/ For european you want the latest under 21BA. This article discusses some of the advantages of the european version of the Oneplus firmware: https://piunikaweb.com/2019/05/22/o...and-bloatware-owes-switch-to-eu-rom-firmware/ Additionally I went through the xXx No Limits config file and identified as many of the things he was "debloating" as I could and I used adb disable-user to disable those apps on my non rooted phone. Why? I never saw much of a point in fake deleting the apps where you have to do a reinstall to get them back when you are not actually saving any real space. The apps are still there, just hidden from you so just as simple to disable which keeps them from using resources but you can easily enable them again should you need them. The list I personally disabled was:

#Zen Mode

adb shell pm disable-user com.oneplus.brickmode

sleep 10s

#Game Space

adb shell pm disable-user com.oneplus.gamespace

sleep 10s

adb shell pm disable-user com.oneplus.gamespace.white.overlay

sleep 10s

adb shell pm disable-user com.oneplus.gamespace.black.overlay

sleep 10s

adb shell pm disable-user com.oneplus.backuprestore.remoteservice

sleep 10s

adb shell pm disable-user com.android.bookmarkprovider

sleep 10s

adb shell pm disable-user com.oneplus.opbugreportlite

sleep 10s

adb shell pm disable-user com.google.android.feedback

sleep 10s

adb shell pm disable-user com.android.providers.partnerbookmarks

sleep 10s

adb shell pm disable-user android.autoinstalls.config.oneplus

sleep 10s

adb shell pm disable-user com.android.cellbroadcastreceiver

sleep 10s

adb shell pm disable-user com.android.cellbroadcastreceiver.basiccolorwhite.overlay

sleep 10s

adb shell pm disable-user com.android.cellbroadcastreceiver.basiccolorblack.overlay

sleep 10s

adb shell pm disable-user com.android.cellbroadcastreceiver.overlay.common

sleep 10s

adb shell pm disable-user com.android.stk

sleep 10s

adb shell pm disable-user com.qualcomm.uimremoteclient

sleep 10s

adb shell pm disable-user com.android.dreams.basic

sleep 10s

adb shell pm disable-user com.oneplus.bttestmode

sleep 10s

adb shell pm disable-user com.oem.autotest

sleep 10s

adb shell pm disable-user com.oneplus.factorymode.specialtest

sleep 10s

adb shell pm disable-user com.oem.logkitsdservice

sleep 10s

adb shell pm disable-user com.google.ar.core

On linux if you save that to a file like work.sh and chmod 755 it you can execute it and sit back while it does all of them one by one with a 10 second delay between commands. You can also run them manually one by one. 5 seconds would have been sufficient instead of 10. To re-enable all of them find/replace the word "disable-user" and change to "enable" If you are wondering why I don't just root it, I have to unlock the bootloader which is going to wipe everything...so before I do Im making sure the one that is already rooted is 100% functional so I can copy that info BACK to the one I just bootloader unlocked. My data was worth the effort of grabbing the 2nd phone because I have no way to backup my app data on the non rooted phone..especially for non google play store apps (fdroid, amazon app store, xda etc).

Sorry for being longwinded...hopefully some of that is helpful.