[GUIDE] Change Screen Resolution [Performance Tweak][CM/AOSP]

lethalchronus

Senior Member
Apr 27, 2015
115
63
0
>Change Screen Resolution<

Introduction:
I'm going to write this guide to teach you how to change the Screen Resolution of your Xiaomi Mi3/Mi4 AOSP/CM Based ROM to improve the graphics performance of your Mi3 without stressing your CPU/GPU while playing games.

What you need to Download:
Resolution Changer by NoMone:
https://play.google.com/store/apps/...apk&pcampaignid=APPU_1_TXl1VcrLFoWB8QXozIGIBA

Root Browser:
https://play.google.com/store/apps/...ser&pcampaignid=APPU_1_oXl1VczIG4_s8AX7-YLQCQ

Note: Default Screen Resolution of Xiaomi Mi 3 is 1080x1920FHD @480 DPI, well what we are going to do is Change it into 720x1280HD @320 to improve performance. (Don't worry about getting the icons bigger, the reason why we have to reduce the DPI on the Build.prop is to avoid glitches and make the Icons and UI at the normal size when changing the resolution, because using the Resolution Changer alone will cause some glitches on other apps )

Steps:
1. Open Root Browser; and find /system/build.prop and open it using RB Text Editor.
2. Find ro.sf.lcd_density=480 and change it to 320.
3. Click Save.

4. Open Resolution Changer; Enter 720 Width, 1280 Height, 320 DPI
5. Click Apply and wait for it to change.
6. Click Yes to Confirm and Skip on the next dialog.
7. Now exit the app and Reboot.

After rebooting, you'll see that you've changed the Screen Resolution to FHD>HD. :good:
Congratulation, to prove it do an Antutu Benchmark test and you'll see the difference. :good:

Additional Info:
(OPTIONAL IF YOU'RE USING CUSTOM DPI ON FULL HD)
If you were using a custom DPI on FULL HD for example;
You're using 400 or 380 or 370 on 1080x1920FHD Resolution,
Do these to properly change resolution to avoid getting the UI or Icons Bigger than Normal.

Example;
If you are using 400DPI on 1080x1920FHD.

400÷3=133DPI
400-133=267DPI

so the right DPI that you're going to use would be; 267DPI on 720x1280HD PLEASE, DONT FORGET to CLICK THANKS!
 
Last edited:

Silac_8

Member
Jul 1, 2012
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Everything is working almost perfectly. Some icons are larger than they used to be. But that wasn't problem. Real problem is that SwiftKey keyboard didn't scale. So I had to revert back to Google original keyboard to reset resolution back to 1080p

Sent from my MI 3W using XDA Free mobile app
 
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lethalchronus

Senior Member
Apr 27, 2015
115
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Everything is working almost perfectly. Some icons are larger than they used to be. But that wasn't problem. Real problem is that SwiftKey keyboard didn't scale. So I had to revert back to Google original keyboard to reset resolution back to 1080p

Sent from my MI 3W using XDA Free mobile app
Oh I forgot to write something about Swift Keyboard, Sorry since I used Google Keyboard. but aside from Swiftkey everything is fine :good:
 
Last edited:

pra300

Senior Member
Jun 10, 2013
97
17
28
Nashik
Initially tried this with MIUI v5, turned out to be very bad. The icons became very large and going to back to native resolution didn't help either. Fortunately I had nandroid backup.
Later I tried it on MIUI 6, it worked!
Some glitches are there:
- On recent apps screen
- camera effects selection screen
- Calender and clock icons turned invisible
- Minor glitches in clock app

Otherwise everything looks good, and performance bump is noticeable. Excited to find out how much it improves battery life.

Thanks for sharing.
 

lethalchronus

Senior Member
Apr 27, 2015
115
63
0
Initially tried this with MIUI v5, turned out to be very bad. The icons became very large and going to back to native resolution didn't help either. Fortunately I had nandroid backup.
Later I tried it on MIUI 6, it worked!
Some glitches are there:
- On recent apps screen
- camera effects selection screen
- Calender and clock icons turned invisible
- Minor glitches in clock app

Otherwise everything looks good, and performance bump is noticeable. Excited to find out how much it improves battery life.

Thanks for sharing.
No problem :)
that's why it's for CM/AOSP Based ROM but I'm glad that it worked for you though there are some glitches.
 
Last edited:

andywoody12

Senior Member
Jun 27, 2015
163
3
0
Hi im using a a33 tab with screen dpi 160 and 480x800 resolution. Can I change this to higher resolution and dpi?

sent from xda app in my s710 using tapatalk . (*゚▽゚)ノ
 

lethalchronus

Senior Member
Apr 27, 2015
115
63
0
Hi im using a a33 tab with screen dpi 160 and 480x800 resolution. Can I change this to higher resolution and dpi?

sent from xda app in my s710 using tapatalk . (*゚▽゚)ノ
You can but, I won't recommend it because it would just stress out the processor and gpu of that low-end tablet, just leave that be.
 

Jongla

Senior Member
Feb 18, 2015
376
84
58
Chittagong
While everyone gets larger icons,i am getting small icons,small screen,and all the app including resolution changer itself says the current settings is 1080x1920 with 320dpi.


Where am i doing it wrong?
I am on cm12 latest nightly.
 

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QQboss

Senior Member
Feb 16, 2012
210
23
48
Ostrava
same problem as Jongla here, running the same CM 12 nightlies. I guess the problem is that resolution changer doesnt change anything after you apply, current settings are kept as FHD res. Maybe try a different app to do it.
 

JBolho

Senior Member
Nov 8, 2011
1,315
1,087
133
Porto
Guys, if you're using a CM rom, just install Xposed and install the App Setting module. Then, you just choose the app, turn on the custom settings, choose the resolution and dpi you want, and the app will run with those defenitions without having to mess with the entire UI on the device...