For me every Phone i get i use this way
1 : I look at the phone and see how it's really amazing
check the box.. accessories.. and everything.
2: Root and install Magisk with custom recovery (immediately
3: go through initial set-up, register my fingerprint and face lock, G account, and for me i like a fresh start on every new phone, no backup or anything.
4: Install my apps from Google play and see if there's any updates ( I disable some apps that i don't use in example Google movies & tv.. Facebook.. G photos)
5: I Go to settings and I change some functions, and from customization - tone i prefer my phone to be fully dark
, Also i change the ringtone and some sounds and i disable both lockscreen, screenshot and dial pad sounds.
6: I take care of my home screen, I rearrange the icons widgets, And folders to the way i like. And my homescreen set up is the same on every phone, I like everything to be simple and( stockish).
And here are some information of my OnePlus 7 pro
Launcher: OnePlus launcher
Magisk modes: only 2 ( 1 for iOS emojies and special font and 2 make the camera zoom up to 20x)
ROM: OxygenOS 10.3.2 based on Android 10
And that's it, Enjoy your new OnePlus 7 pro You will absolutely gonna love it