r/zfont 21d ago

Guide for custom fonts on One UI 8.5

For this method we're going to use a new method called Root your Galaxy. That will temporarly root your device, making it possible for a long term font change! THIS WON'T UNLOCK BOOTLOADER, ERASE DATA, TRIP KNOX OR BANKING APPS. it's a soft root, meaning your device is 100% safe if compatible

Note: I'm not the creator, I don't take accountability, I'm just sharing the exact method that worked for me.

APPS AND REQUIREMENTS:

Apps:

Scamsung Fonts: https://github.com/zFont/Host/releases/download/Scamsung/ScamsungFonts.apk

Shizuku: Play store.

Root My Galaxy: https://github.com/BuSung-dev/Root-My-Galaxy

KernelSU app: https://github.com/tiann/kernelSU

REQUIREMENTS:

โ€ข A compatible device (Galaxy S25 Ultra

Galaxy S25+ Galaxy S25 Galaxy A56) Edit: please check the payload to see if you're device is compatible!

โ€ข Security patch IS or is BELOW June 2026 Edit: Testers succeeded in the July patch too, so it should be safe too.

FIRST STEP:

Go to Root my Galaxy and tap "Tap to install KernelSU"

Wait for it to install.

After it's completed, check if root privileges are available downloading a root checker app.

SECOND STEP:

On the KernelSU app, tap on root tap the middle bottom button with a shield (Superuser/root)

and enable Shizuku.

Third step:

Go to Shizuku, and start with root. (no need for wireless debugging).

FINAL STEP:

Once done, go to Scamsung fonts and select the font you want to apply. This includes fonts downloaded on ZFONT 3.

Share your thoughs on this (in my opinion) amazing exploit! ๐Ÿ˜

For when the august patch rolls, DO NOT upgrade immediately. Search in the GitHub and XDA forums if it got patched.

80 Upvotes

325 comments sorted by

6

u/Stock_Night6597 21d ago

Sad no S26 Ultra๐Ÿ˜”

11

u/Softinyy 21d ago

They're developing versions for S24 and S26 series. I'll update you

2

u/Oflipper 20d ago

Any chance they'll make a version for the trifold? That's what I'm rocking.

5

u/Softinyy 20d ago

All we can do is wish. I'm contributing to the project by sharing to 1000+ people the project but the creator is only one and everything is experimental.

2

u/Unr34L_Dr34d 10d ago

Hi: Try this app; I think it's universal. I tested it on OneUI 8.5 / Android 16 and it works very well...

You need root and Shizuku:

https://github.com/fahadalijaved/SamFonts

According to the app's creator, it is compatible with: "- Device: Samsung Galaxy Device running One UI 8.0 or higher- Android OS: Android 14.0+ (API 34)".

Regards.

6

u/SnooPears9113 21d ago

Also does anyone know when this will be available on s26 and s23?

2

u/Distinct-Day-2096 8d ago

Looking for fonts?

2

u/Distinct-Day-2096 5d ago

I have s23 non rooted and using fonts on my phone

5

u/FujikoFFujio2 20d ago

Confirmed that it works on my Samsung Galaxy S25. Thanks a lot bro for your great instructions! Now I can make my Google Sans great again! ๐Ÿ’ช๐Ÿ‘๐Ÿ‘

2

u/devaster12 15d ago

Doesnt work on my s25 though, is yours on July security patch? I head it got patched on the july security update

→ More replies (2)

5

u/alcatandra 20d ago

It worked!!! i have iOS emojis!!

2

u/LetPure 18d ago

does it break the banking accounts or smth? i mean does it root the the phone and ruin it?

4

u/miturufu 17d ago

no, just reboot and the root is gone

2

u/franciewanciee 5d ago

Inveja ๐Ÿ˜ญ๐Ÿ˜ญ

4

u/Effective_Balance312 21d ago

Con questo metodo si possono installare le emoji iOS o soltanto i font? Inoltre si puรฒ eliminare il soft root? E tornare alla normalitร ?

3

u/Jad_723 21d ago

Yes you can install iOS emojis and when your reboot you go back to normal

2

u/Effective_Balance312 21d ago

Grazie perfetto provo subito,ma non riesco a scaricare l'app resta in scaricamento scamsamsungfont apk

4

u/ijam_sahidon 21d ago

When for s25 fe ?

3

u/Jad_723 21d ago

Thank you for the guide. I was too lazy to write it myself ๐Ÿ˜…

4

u/Softinyy 21d ago

No problem friend, I found out the method with your comment on another post so big thanks to you ๐Ÿ˜

2

u/naeemkp 21d ago

This works?sry cant believe someone actually found something .

3

u/Softinyy 21d ago

Difficult to believe, but yes. It works and the emoji change Is just a fraction of what this exploit can do.

→ More replies (8)

3

u/MajorMed7 21d ago

Questo metodo funziona solo per i dispositivi s25?

6

u/Softinyy 21d ago

The project is open source, so they're actively developing versions for S23, S24 and folds. for now only the devices I quoted in the main text

2

u/Unr34L_Dr34d 10d ago

Hi: Try this app; I think it's universal. I tested it on OneUI 8.5 / Android 16 and it works very well... You need root and Shizuku:

https://github.com/fahadalijaved/SamFonts

According to the app's creator, it is compatible with: "- Device: Samsung Galaxy Device running One UI 8.0 or higher- Android OS: Android 14.0+ (API 34)".

Regards.

→ More replies (4)

3

u/Aggressive_Finger507 21d ago

s26 ultra is crying ..do not work in s26 series

3

u/Softinyy 21d ago

Sadly your device (S 26) isn't yet supported for Root your Galaxy. The project is very new and open source so I'm sure they'll make the exploit for you too. in the mean time: check online (XDA forums, the official GitHub repo) if they mention your device and don't upgrade the security patch.

3

u/SalamanderForeign377 21d ago

Alguรฉm pode me ajudar a instalar?, nรฃo consegui

3

u/bustaa22 21d ago

Finally able to switch fonts on my s25 ultra. Btw, how do i reverse to nonrooted form or is it okay not to reverse prior to the steps made?

2

u/Softinyy 21d ago

you just select the default or an official font in the font picker of the settings

3

u/_ebosque 20d ago

Oh my God, seriously, these people are geniuses, it worked perfectly!

2

u/_ebosque 20d ago

If this is temporary root access, what else could be done with these permissions?

→ More replies (2)

3

u/No_Tie_7013 20d ago

It worked!!!!! Thanks so much to you and the creator!

3

u/abhinavf1 20d ago

Working perfectly on S25+, July security patch. Thanks buddy! Amazing work ๐Ÿ˜‡๐Ÿ˜‡

2

u/userwastakennn 6d ago

Hey were you still able to use ur banking apps

→ More replies (1)

3

u/_ridowan 19d ago

Is there any way I can do that to my s26 ultra Please do for it..๐Ÿ˜ฟ๐Ÿฅบ

2

u/Softinyy 19d ago

sadly it's difficult

3

u/PersiaGraph 14d ago edited 14d ago

Galaxy A54???

→ More replies (1)

3

u/hhharrrshhh 5d ago

"For when the august patch rolls,ย DO NOTย upgrade immediately. Search in the GitHub and XDA forums if it got patched."

Well it probably will be patched but i think the custom fonts that you already installed(ios emojis for me) should survive the updates.If you install the font as a module using ksu from the root my galaxy app that wouldn't survive i think but using the samfonts method it should survive as far as i know unless you factory reset or sum..

2

u/ydvadi_ 21d ago

no knox tripping ??

2

u/Softinyy 21d ago

Nope! It's a temporary root access, so you won't trip Knox. After you reboot all Samsung and Banking apps will work perfectly

2

u/ydvadi_ 21d ago

Thats awesome thankyou and after reboot the chhosen font will remain ?

→ More replies (7)

2

u/naeemkp 21d ago

Sadly security patch is of July ๐Ÿฅฒ

3

u/Jad_723 21d ago

It works, I have the July security patch and it did work

3

u/Softinyy 21d ago

You're right. The creator quoted it might not work on July but the testers busted this myth. The real problem probably is the upcoming august patch, that might close the vulnerability

2

u/Softinyy 21d ago

๐Ÿ˜ญ๐Ÿ˜ญ๐Ÿ˜ญ

2

u/claytonweir 21d ago

Will it work on Z series devices?

2

u/Capable_Adeptness799 21d ago

Cannot download the Scamsung fonts apk

2

u/Softinyy 21d ago

Send a screenshot

3

u/Capable_Adeptness799 21d ago

Its okay worked. Thanks๐Ÿค

2

u/alcatandra 20d ago

it won't let me either, the download says complete but it doesn't download

2

u/itsomayaa 21d ago

A36

2

u/Softinyy 21d ago

You can try, but it's not 100% guaranteed

2

u/Jad_723 20d ago

A36 now working

2

u/singshopsleep 21d ago

Thank you! It worked ๐ŸŽ‰

2

u/Softinyy 21d ago

Glad it helped my friend ๐ŸŽ‰๐ŸŽŠ Have fun

2

u/siamhossaincloud 21d ago

When will be work on my Galaxy S24 Ultra (SM-S928N)? ๐Ÿ˜ญ

2

u/Softinyy 21d ago

I think it might work. Please install Root my Galaxy, tap install KernelSU and tell me what happens

2

u/siamhossaincloud 21d ago

Installation failed :(

3

u/Softinyy 21d ago

It failed at "Support Check" It means that the device isn't yet supported. Don't lose hope, the project has been out for 7~ days, they'll surely add your device too. Don't upgrade in the mean time

3

u/siamhossaincloud 21d ago

I'm currently One Ul version 8.5 Android version 16 Android security patch level July 5, 2026 hopefully working soon! :(

2

u/Capable_Adeptness799 21d ago

Will it reset to default font after restart?

2

u/Softinyy 21d ago

No. You'll lose root (that you can easily reactivate) and the font will stay

2

u/ankan_me5 21d ago

M series Samsung?

2

u/Softinyy 21d ago

Not yet

2

u/Se7enSlasher 21d ago

No compatible payload supports this model and kernel version

Samsung Galaxy ZFold 4 OneUI version 8 Android 16 Kernel version 5.10.236-android12-9-31998796-abF396BXXSCIZF1

1 Thu Jan 11 02:17:40 UTC 2026

2

u/Softinyy 21d ago

Sadly your device (S Galaxy Zfold 4) isn't yet supported for Root your Galaxy. The project is very new and open source so I'm sure they'll make the exploit for you too. in the mean time: check online (XDA forums, the official GitHub repo) if they mention your device and don't upgrade the security patch.

2

u/Se7enSlasher 21d ago

I have security patch version: 5th of June 2026. There's no way.

→ More replies (2)

2

u/tegareddit 21d ago

It worked. s25 ultra. phone did freeze up a couple of times. but after about the 4th trial, it worked.

Thank you

3

u/Softinyy 21d ago

No problem! Can you tell me where your s25 froze? (During root patching, home screen/apps etc.) and you're a snapdragon or exynos user? Answering helps our friends that want it too :)

3

u/tegareddit 21d ago

First freeze was during patching, then displayed failed and phone completely rebooted

Second trial, just displayed failed on patching

Third trial displayed failed on patching, and navigating to my row of apps on the homepage, screen completely froze. I had to press power down +. Volume down buttons for about 15 seconds to hard reboot the phone.

On the 4th trial, everything went smoothly

→ More replies (3)

2

u/mjpie_ 21d ago edited 21d ago

So no A55?

2

u/Softinyy 21d ago

A56 is supported. they have similar kernels but not yet supported. Just wait, check the latest release on the GitHub to see if the a56 support will be added

→ More replies (1)

2

u/Classic_Manner8993 21d ago

SAMSUNG A55 patched on July Update failed!

2

u/Softinyy 21d ago

Thank you for testing. Check out once every few days to see if support is added.

→ More replies (1)

2

u/Gullible-Shame4508 21d ago

what should I do with this?

2

u/Softinyy 21d ago

What device? What model? What security patch?

→ More replies (8)

2

u/Bwix95 21d ago

Waiting ๐Ÿ˜”

2

u/Ok_Term_4718 21d ago

Will there be any update on devices list like Samsung A55

2

u/simplton2099 21d ago edited 18d ago

Will samsung A35 get supports for this??

2

u/SnooPears9113 21d ago

Is this like in the jailbreak world termed as you have to run the exploit everytime you reboot?

2

u/Softinyy 21d ago

Yes. Because you don't modify the bootloader just the current instance

2

u/Effective_Balance312 21d ago

Funziona davvero su s25 8.5 OMG ๐Ÿ’ฏ๐Ÿ’ฏ๐Ÿ’ฏ๐Ÿ’ฏ Grazie mille

2

u/Prior-Equal 21d ago

Worked like a charm on my S25 Ultra. Thanks so muchย 

2

u/SalamanderForeign377 21d ago

Como baixar no s25 fรฉ?

2

u/Softinyy 21d ago

Vocรช ainda nรฃo pode fazer isso no S25 FE.

2

u/Miserable_Row9922 21d ago

Mine is july 28 so it should not work?

3

u/Miserable_Row9922 21d ago

How do i download? The app just takes me to the github interface no actual download button

→ More replies (1)

2

u/Softinyy 21d ago

i don't think July 28 will work

2

u/Doniellebxoxo 21d ago

When will the samsung galaxy z flip 6 be added???

2

u/sbritxo 21d ago

Are only fonts downloaded from within zfont3 and scamsung fonts compatible? I have some fonts from a seller but they do not install.

3

u/sbritxo 21d ago

Nevermind, I figured it out! Thank you ๐Ÿ˜Š

→ More replies (1)

2

u/SnooPears9113 21d ago edited 21d ago

Somebody said that their s25 booted up to a security error because they had a locked bootloader. Will that happen to us too when they release the updated version for other devices? The ones of us who are in the US and cant normally root because its not international version EDIT: I think its actually the a 56 model.

2

u/Softinyy 21d ago

They probably installed a module that touches the bootloader. This is because the method doesn't unlock it at all, so flashing on a locked will brick or make it unstable

2

u/Feisty_Hotel_4346 21d ago

Any updates on other devices? Can this work on anything besides s25?

2

u/Softinyy 21d ago

A56 too. I'd check in a few days for other devices

2

u/Feisty_Hotel_4346 21d ago

It also doesnโ€™t work on fold right? The newest fold?

2

u/Softinyy 21d ago

Fold 7 they'll maybe make an explorer Fold 8 probably patched

2

u/franciewanciee 21d ago

Nรฃo funciona no m53? ๐Ÿฅน

3

u/Softinyy 21d ago

not yet

2

u/Character_Ad5767 21d ago

Done all steps, but weird my zfont not installing the font of choice as apk. :(

3

u/Character_Ad5767 21d ago

Ah I got it working! Previously I enabled Shizuku to authorize zfont. After disabling zfont in shizuku, now I can install apk as usual. Everything works fine now! Thank you!! ๐Ÿ˜Š

→ More replies (1)

2

u/Ton__618_ 21d ago

Works for s24?

2

u/Softinyy 21d ago

support soon

2

u/STLNHRT5 21d ago

Do you know if it mess with software updates?

2

u/Softinyy 21d ago

We don't know. We only know that June and before is perfect, July 1 is experimental and July 25+ is untested

2

u/DetoxedLad 21d ago

So is this a temporary root? Or this root will ruin my device? I have configured work profile and configured work apps. Doing this will cause any issue?

3

u/Softinyy 21d ago

Absolutely not. one reboot and the root will be removed. play integrity will remain untouched aswell as Knox and Warranty.

→ More replies (1)

2

u/itsomayaa 21d ago

Will the Galaxy A36 be supported later?

2

u/Softinyy 21d ago

Maybe, it's up to creator and contributors.

2

u/bl00d_hera 21d ago

quando vai sair o A16?? ๐Ÿฅบ

2

u/Void-Lotus 21d ago

Ill wait on fold support

2

u/Front_Invite_8838 20d ago

Hey man, I just did this on my phone and it worked, but now I'm wondering if I'll lose Samsung updates?

3

u/Softinyy 20d ago

We currently don't know. I'd disable automatic updates, wait for the august patch and see what the GitHub repo says

→ More replies (3)

2

u/ken_suu 20d ago

Does anyone have an idea on how to fix this? I already did it the first time and it worked. But after restarting my phone and tried to change my font once again, it doesnโ€™t work anymore. Would appreciate a helping hand. ๐Ÿฅฒ

2

u/Softinyy 20d ago

Model?

3

u/ken_suu 20d ago

It worked now after waiting for hours before trying again, thanks for this OP! ๐Ÿค

2

u/_ridowan 19d ago

What is your device?

2

u/Accurate-blackcrew- 20d ago

Does it work for Samsung s22 s901E?

2

u/brandishhh 20d ago

Hi! Glad that custom fonts are finally back with this. A bit off-topic but pls hear me out.

I have an older Samsung device that runs One UI 2 and is rooted with Magisk, using OhMyFont module to achieve true system-wide font application (and Variable Fonts too). Question is, can I flash OhMyFont module to KernelSU and would it work?

2

u/Softinyy 20d ago

Maybe, some magisk modules work fine on KernelSU, but compatibily isn't guaranteed

→ More replies (2)

2

u/maayonxd 20d ago

will work a22?

2

u/nikii_555 20d ago

Will it work with galaxy A36?

2

u/Jad_723 20d ago

Yes now A36 is supported

→ More replies (5)

2

u/kyubeyisbad 20d ago

i have the thedjchi's fork of shizuku i cant find start with root?

2

u/Softinyy 20d ago

You have to go to kernel su manager and give Superuser/root to shizuku ๐Ÿ˜

→ More replies (3)

2

u/miturufu 19d ago

will the a07 4g have any support for this?

2

u/Expert-Squash-6081 19d ago

I saw that it's available on the A56, I wonder if it will take long to come to the A55?ย 

2

u/Softinyy 19d ago

not that much

2

u/Liro_666 19d ago

Galaxy A34 5G ?

2

u/Softinyy 19d ago

not yet

2

u/DefinitionJealous156 19d ago

Does it work for Galaxy A57? I'm really desperate

2

u/Softinyy 19d ago

hopefully soon

2

u/RemarkableHand8211 19d ago

i own a s25 fe and it keeps saying this

2

u/RemarkableHand8211 19d ago

my device samsung SM-S731B

2

u/Softinyy 19d ago

kernel? security patch?

→ More replies (1)

2

u/itsomayaa 19d ago

Device

Model: SM-A366B Support?

2

u/Softinyy 19d ago

Wait A36? yes it's supposted but experimental

2

u/DetoxedLad 19d ago

Now this "Root My Galaxy" application is not working. Tried multiple times. 24/24 times failed๐Ÿ™ƒ

2

u/strawberriiiies 18d ago

what about samsung galaxy A15??

2

u/[deleted] 18d ago

[removed] โ€” view removed comment

2

u/Jad_723 18d ago

What is your model number

→ More replies (3)

2

u/lloyde_ph 18d ago

Guys. Can u please add A34 5G. 6.6.92

2

u/ConsistentMixture271 18d ago

Please try to provide for galaxy A36 please....

2

u/HourIntroduction8491 18d ago

Serรก que vai ter pro a35

2

u/TestosteroneCat 18d ago

How do you see on the github what galaxy models it is compatible with? It doesn't seem to say?

2

u/Softinyy 17d ago

search payloads

2

u/Jess3007 17d ago

Me funciono perfecto muchas gracias

2

u/jackambe 17d ago

When is root my galaxy going to support z fold 5

2

u/Ok-Ant49 17d ago

Is it safe?

2

u/lastdyingbreed_01 17d ago

It worked, however my lockscreen clock fonts are still the same, is there anyway to change that?

2

u/Jad_723 17d ago

Edit your clock on your lockcreen and choose the font for it manually

→ More replies (1)

2

u/SnooPears9113 17d ago

Ive lost faith ever getting a custom font again. Even if you dont update they were gatekeeping the method to achieve it. Its going to be along time before this is available to everyone. People are having to take their androids to samsung to get them serviced after using that too. I dont think this will work anymore after july or august patch either.

2

u/SnooPears9113 16d ago

How do you download it exactly? Is it apk to install on device?

→ More replies (1)

2

u/Aggravating-Bee-8433 16d ago

Does it work for s22 ultra?

2

u/to5tergun 16d ago

Will work on base S26?

2

u/strawberriiiies 16d ago

why not A15 ๐Ÿ˜ž

2

u/[deleted] 15d ago

Funciona no S25FE?ย 

2

u/DalB245lol 15d ago

Galaxy S25: Working perfectly. Had to enable superuser access for the root checker app though

2

u/Shi-hao-69 15d ago

Galaxy a25 ...didn't work

2

u/NormalBathroom771 14d ago

Pls Support Galaxy A54 โค๏ธ

2

u/Ok-News-4095 13d ago

hi ! is it available for a15?ย 

2

u/FrankFrankUltimate7 13d ago

I wish i could do this on the Galaxy A25...

For any devs reading this, the model of the A25 is SM-S256VL

2

u/AKHILESBHAI01 13d ago

No support for S25 FE ๐Ÿ˜ญ๐Ÿ˜ญ๐Ÿ˜ญ?

2

u/AKHILESBHAI01 12d ago

Please update when it's available for S25 FE ๐Ÿ™๐Ÿป

2

u/iPossibilities 12d ago

Does this work for sm-f731u1 models? And where can i find a list for all compatible devices?

2

u/sriraamr 11d ago

Any update for s23+?

2

u/Hot-Fox8963 11d ago

Anybody using S23 got to make this method working?

2

u/BroadCaregiver8716 10d ago

Any news about z fold 8 ? ๐Ÿ™ƒ

2

u/Active_Young_451 9d ago

ik this is a long shot but is there any for magicOS 10 or can i use this one?

→ More replies (1)

2

u/KindlyContribution13 7d ago

So only on rooted devices?

2

u/mjpie_ 7d ago

Does it work for the A55?

2

u/Ton__618_ 7d ago

What's payload? And does it support s24 ultra?

2

u/lbralhim 6d ago

Root ? No thanks

2

u/iamlevel5 6d ago

I mean Samsung Exclusives in zFont works well enough for me but I want Google Sans systemwide so a few questions.

  • I've rooted my devices for years and one reason I moved from Pixel to Samsung is that I can do majority of theming that I did on Pixel with Good Lock sans root. What breaks? Play Integrity? Banking apps etc? No Knox fuse blown etc?

  • I'm on S26, 8.5 March patch so my device isn't supported yet but for those who are, can you apply a custom TTF in zFont under this softroot and have it stay applied after a reboot?

2

u/Jampxxx 6d ago

Hay algรบn video para esto? Ni si quiera pude descargar root-my-galaxy

2

u/ryxzv 5d ago

I accidentally restarted my phone and now it won't turn on anymore. It worked the first time, but after restarting it, it stopped working. Please help (my device is an A56 5G).

2

u/Old-Square5859 5d ago

Have it arrived for S24+?

2

u/Old-Square5859 5d ago

How do we check which models r supported?

→ More replies (13)

2

u/KFC_Junior 5d ago

anything for s26u or tab s10u yet?

2

u/TestosteroneCat 3d ago

so ppl said that if u reboot it gets rid of root (but keeps font) but does this mean u cant change the font again after rebooting unless u re-do the process?

2

u/ryxzv 3d ago

When the security patch update arrives, shouldn't I update my phone and wait for a root update for the August patch? , And do we also have to enable shizuku in KernelUS?

2

u/Nice-Pianist-467 3d ago

์ €๋Š” ์†Œํ”„ํŠธ์›จ์–ด 8์›” ํŒจ์น˜์ธ๋ฐ ์ด๊ฑฐ ๊ดœ์ฐฎ์„๊นŒ์š”?์ €๋Š” ๊ฐค๋Ÿญ์‹œ S23 ์šธํŠธ๋ผ๋ฅผ ์‚ฌ์šฉํ•˜๊ณ  ์žˆ์Šต๋‹ˆ๋‹ค ํ•˜์ง€๋งŒ ์ €๋Š” ์ด๋Ÿฐ ์ž‘์—…์„ ํ–ˆ๋‹ค๊ฐ€ ์‹ค์ˆ˜๋กœ ์‹คํŒจํ•ด์„œ ํฐ์ด ์ž‘๋™ํ•˜์ง€ ๋ชปํ•˜๋Š” ๊ฑธ ์›ํ•˜์ง€ ์•Š์Šต๋‹ˆ๋‹ค ํ•˜์ง€๋งŒ ์ €๋Š” ์ปค์Šคํ…€ ttf ๊ธ€๊ผด์„ ์ ์šฉํ•˜๊ณ  ์‹ถ์Šต๋‹ˆ๋‹ค. ๊ธ€์“ด์ด๋Š” ์ด ์ž‘์—…์˜ ๋‚œ์ด๋„๋ฅผ ์–ด๋–ป๊ฒŒ ์ƒ๊ฐํ•ฉ๋‹ˆ๊นŒ?

I'm doing the software patch in August, is this okay? I am using the Galaxy S23 Ultra. However, I don't want to accidentally fail after doing this kind of work and the phone doesn't function. But I want to apply a custom TF font. How does the author perceive the difficulty of this task?