[GUIDE] Customize Bixby button in custom ROMs - Samsung Galaxy S10 Guides, News, & Discussion

For whoever is using a custom ROM and the bixby button is either disabled or cannot customize with the usual Bixby remap app, I have found a solution: (Root needed for #1, #2 works without root)
>Solution #1 (First try this, if it doesn't work - it didn't work for me for some reason - try solution #2):
With tips from the community, I have found these possible locations to edit the bixby key. Use root file explorer:
- /root/system/usr/keylayout/gpio_keys.kl
- /system/usr/keylayout/Generic.kl
- /vendor/usr/keylayout/gpio_keys.kl (?)
Search for key 703 in each of these files. If it does not exist, try to add it manually. Effects take place after a reboot.
Use this guide here for more details: https://forum.xda-developers.com/t/...on-with-simple-double-and-long-press.3839544/
>Solution #2 - Button Mapper: Remap your keys (Not my app)
First, try to see if you can remap the bixby key with this app. For me, it did not work again, but I found a nice workaround:
In the app, instead of changing "Bixby Button", go to "Add Buttons". Now, press the bixby key. The app should detect the key, and finally you can set it to whatever you want.
(But keep in mind, for this option, it is necessary to purchase the pro version).

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FoxTheLegend said:
For whoever is using a custom ROM and the bixby button is either disabled or cannot customize with the usual Bixby remap app, I have found a solution: (Root needed for #1, #2 works without root)
>Solution #1 (First try this, if it doesn't work - it didn't work for me for some reason - try solution #2):
With tips from the community, I have found these possible locations to edit the bixby key. Use root file explorer:
- /root/system/usr/keylayout/gpio_keys.kl
- /system/usr/keylayout/Generic.kl
- /vendor/usr/keylayout/gpio_keys.kl (?)
Search for key 703 in each of these files. If it does not exist, try to add it manually. Effects take place after a reboot.
Use this guide here for more details: https://forum.xda-developers.com/t/...on-with-simple-double-and-long-press.3839544/
>Solution #2 - Button Mapper: Remap your keys (Not my app)
First, try to see if you can remap the bixby key with this app. For me, it did not work again, but I found a nice workaround:
In the app, instead of changing "Bixby Button", go to "Add Buttons". Now, press the bixby key. The app should detect the key, and finally you can set it to whatever you want.
(But keep in mind, for this option, it is necessary to purchase the pro version).
Click to expand...
Click to collapse
I installed Magisk and Root Explorer. I don't have 703. Since I don't know English well, the instructions on the link are complicated for me. Can you briefly explain to me how to get Bixby to launch the desired application with one click? Thank you in advance.

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ZmisiS said:
I installed Magisk and Root Explorer. I don't have 703. Since I don't know English well, the instructions on the link are complicated for me. Can you briefly explain to me how to get Bixby to launch the desired application with one click? Thank you in advance.
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Same problem as me, I didn't find 703 anywhere.. you can try manually adding it though, maybe it will work. Like:
key 703 CAMERA
save, reboot device, check if works.
Remember to save file with .kl extension, not .txt, or buttons wont work

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FoxTheLegend said:
Same problem as me, I didn't find 703 anywhere.. you can try manually adding it though, maybe it will work. Like:
key 703 CAMERA
save, reboot device, check if works.
Remember to save file with .kl extension, not .txt, or buttons wont work
Click to expand...
Click to collapse
I don't know how can try manually adding it though? What do I need to write to start Bixby button to save?

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ZmisiS said:
I don't know how can try manually adding it though? What do I need to write to start Bixby button to save?
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if as you said you cant find anywhere "703" in the file, write at the end just like the others, (you can open and edit the file straight away from the root explorer)
key 703 [desired command]
for example
key 703 CAMERA
then save file and reboot phone. If it works, after pressing the bixby key the default camera app should open.
Some people say it works, for me it didn't work though.

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FoxTheLegend said:
if as you said you cant find anywhere "703" in the file, write at the end just like the others, (you can open and edit the file straight away from the root explorer)
key 703 [desired command]
for example
key 703 CAMERA
then save file and reboot phone. If it works, after pressing the bixby key the default camera app should open.
Some people say it works, for me it didn't work though.
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Click to collapse
It didn't work for me either. I worked like that, but I also typed something like this, but without success.
# input_fw Intelligent Key for Dream
key 703 CAMERA
When I change everything, I save it, after that I change the txt name to kl. It needs Check Permissions after that, and I don't see it in Root Explorer. Maybe you need to go to Settings, select the app and check the permissions? I do not know.

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ZmisiS said:
It didn't work for me either. I worked like that, but I also typed something like this, but without success.
# input_fw Intelligent Key for Dream
key 703 CAMERA
When I change everything, I save it, after that I change the txt name to kl. It needs Check Permissions after that, and I don't see it in Root Explorer. Maybe you need to go to Settings, select the app and check the permissions? I do not know.
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Weird - first check in Magisk that root explorer has root permissions. Second try to edit the file at once without first chaning to .txt - most editors support it, no need to change. If that still doesnt work, try a different root file explorer app. For me worked "root browser".

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FoxTheLegend said:
Weird - first check in Magisk that root explorer has root permissions. Second try to edit the file at once without first chaning to .txt - most editors support it, no need to change. If that still doesnt work, try a different root file explorer app. For me worked "root browser".
Click to expand...
Click to collapse
Root Explorer works for me. The system is rooted, and I confirmed it when I opened Root Explorer. You say it didn't work for you. Neither did I. I did everything according to the instructions.

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FoxTheLegend said:
- /vendor/usr/keylayout/gpio_keys.kl
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FoxTheLegend said:
It Worked for me. Big Thank You!
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