[ZTE Axon 7 Questions & Answers] DrakenFX:
mmmm weird cuz this is after 2 reboots + reboot using my fav. reboot app (requires root -Simple Reboot App)

C:\ADB>adb shell
shell@ailsa_ii:/ $ su
su
root@ailsa_ii:/ # ls -al /dev/block/bootdevice/by-name
ls -al /dev/block/bootdevice/by-name
lrwxrwxrwx root root 1970-01-08 21:12 aboot -> /dev/block/sde11
lrwxrwxrwx root root 1970-01-08 21:12 apdp -> /dev/block/sde21
lrwxrwxrwx root root 1970-01-08 21:12 bluetooth -> /dev/block/sde16
lrwxrwxrwx root root 1970-01-08 21:12 boot -> /dev/block/sde12
lrwxrwxrwx root root 1970-01-08 21:12 cache -> /dev/block/sda2
lrwxrwxrwx root root 1970-01-08 21:12 cdt -> /dev/block/sdd2
lrwxrwxrwx root root 1970-01-08 21:12 cmnlib -> /dev/block/sde19
lrwxrwxrwx root root 1970-01-08 21:12 cmnlib64 -> /dev/block/sde20
lrwxrwxrwx root root 1970-01-08 21:12 cryptkey -> /dev/block/sda8
lrwxrwxrwx root root 1970-01-08 21:12 ddr -> /dev/block/sdd3
lrwxrwxrwx root root 1970-01-08 21:12 devcfg -> /dev/block/sda5
lrwxrwxrwx root root 1970-01-08 21:12 devinfo -> /dev/block/sde15
lrwxrwxrwx root root 1970-01-08 21:12 dip -> /dev/block/sde9
lrwxrwxrwx root root 1970-01-08 21:12 dpo -> /dev/block/sde23
lrwxrwxrwx root root 1970-01-08 21:12 dsp -> /dev/block/sde8
lrwxrwxrwx root root 1970-01-08 21:12 echarge -> /dev/block/sde25
lrwxrwxrwx root root 1970-01-08 21:12 fbop -> /dev/block/sda6
lrwxrwxrwx root root 1970-01-08 21:12 frp -> /dev/block/sda7
lrwxrwxrwx root root 1970-01-08 21:12 fsc -> /dev/block/sdf3
lrwxrwxrwx root root 1970-01-08 21:12 fsg -> /dev/block/sde4
lrwxrwxrwx root root 1970-01-08 21:12 hyp -> /dev/block/sde3
lrwxrwxrwx root root 1970-01-08 21:12 keymaster -> /dev/block/sde18
lrwxrwxrwx root root 1970-01-08 21:12 keystore -> /dev/block/sda4
lrwxrwxrwx root root 1970-01-08 21:12 lksecapp -> /dev/block/sde17
lrwxrwxrwx root root 1970-01-08 21:12 mdtp -> /dev/block/sde10
lrwxrwxrwx root root 1970-01-08 21:12 misc -> /dev/block/sda3
lrwxrwxrwx root root 1970-01-08 21:12 modem -> /dev/block/sde7
lrwxrwxrwx root root 1970-01-08 21:12 modemst1 -> /dev/block/sdf1
lrwxrwxrwx root root 1970-01-08 21:12 modemst2 -> /dev/block/sdf2
lrwxrwxrwx root root 1970-01-08 21:12 msadp -> /dev/block/sde22
lrwxrwxrwx root root 1970-01-08 21:12 persist -> /dev/block/sdf5
lrwxrwxrwx root root 1970-01-08 21:12 pmic -> /dev/block/sde6
lrwxrwxrwx root root 1970-01-08 21:12 recovery -> /dev/block/sde14
lrwxrwxrwx root root 1970-01-08 21:12 reserve -> /dev/block/sdd1
lrwxrwxrwx root root 1970-01-08 21:12 rpm -> /dev/block/sde1
lrwxrwxrwx root root 1970-01-08 21:12 sec -> /dev/block/sde5
lrwxrwxrwx root root 1970-01-08 21:12 splash -> /dev/block/sde24
lrwxrwxrwx root root 1970-01-08 21:12 ssd -> /dev/block/sda1
lrwxrwxrwx root root 1970-01-08 21:12 sti -> /dev/block/sde26
lrwxrwxrwx root root 1970-01-08 21:12 system -> /dev/block/sde13
lrwxrwxrwx root root 1970-01-08 21:12 tz -> /dev/block/sde2
lrwxrwxrwx root root 1970-01-08 21:12 userdata -> /dev/block/sda9
lrwxrwxrwx root root 1970-01-08 21:12 xbl -> /dev/block/sdb1
lrwxrwxrwx root root 1970-01-08 21:12 xblbak -> /dev/block/sdc1
lrwxrwxrwx root root 1970-01-08 21:12 ztecfg -> /dev/block/sdf4
root@ailsa_ii:/ #

that alone can only be pull having root + rebooting , maybe is something else???

P.S. i change the DPI using the following command NO REBOOT Require :

adb shell wm density 560

or Download the Terminal from Play Store and do

wm density 560

it will stick at boot, but there's some app that look pretty weird and the Bell/Notification at lock screen is huge LoL and yeah modifying Build.prop for some reason doesn't take place after boot.