Hello everyone! It took us a while but A73 finally got some development done and is ready for GSI or ROM usage. Both of which has it's own problems. Mainly camera quality. Samsung being samsung and qualcomm being qualcomm, we don't have full access to cameras in 3rd party apps so if we go outside samsung's ecosystem, our camera quality suffers. Patrick from A73 Photography telegram group started publishing libraries and config files for gcam. He gave me permission to repost it here so I'll keep this thread updated as he updates his configs.
For anyone who is out of touch, Google Camera is the camera app of Google Pixel phones. Over the years people modded and ported this app to take advantage of many configurations being done in the background. There are dozens of developers and forks of this app but I'll focus on the versions that we have config for in this thread. Currently we have configs for LMC by hasli, AGC by BigKaka, MGC by BSG and SGCAM by Shamim.
Not sure which one to pick?
I personally prefer AGC but it can crash on some roms and gsis. First try AGC, if it crashes try LMC.
Downloads
For config developers : https://drive.google.com/drive/folders/13BZBUY6hTbx2a3bJrMpx_-YuH8SQwkI4?usp=sharing
AGC apk by BigKaka : https://www.celsoazevedo.com/files/android/google-camera/dev-BigKaka/f/dl32/
Config 1: https://drive.google.com/file/d/1vyrUvKNKRhuTGA284ljxz4beCHdBFfxg/view?usp=sharing
Config 2: https://drive.google.com/file/d/1Kkl-W2Y7H-kcwcMCkFUhHTdxFjIeBllT/view?usp=sharing
Both configs are the same but use different sharpness method so try and choose.
AWB Files :
- S5KHM6 (Main Cam)
- IMX258 (UW Cam)
- IMX616 (Front Cam)
Noise Model :
- IMX258 (UW Cam)
Config 1: https://drive.google.com/file/d/1vyrUvKNKRhuTGA284ljxz4beCHdBFfxg/view?usp=sharing
Config 2: https://drive.google.com/file/d/1Kkl-W2Y7H-kcwcMCkFUhHTdxFjIeBllT/view?usp=sharing
Both configs are the same but use different sharpness method so try and choose.
AWB Files :
- S5KHM6 (Main Cam)
- IMX258 (UW Cam)
- IMX616 (Front Cam)
Noise Model :
- IMX258 (UW Cam)
AGC apk by BigKaka : https://www.celsoazevedo.com/files/android/google-camera/dev-BigKaka/f/dl31/
Config File : https://drive.google.com/file/d/170cwOmb5qZ393bgQ4KsZmgAcaTwWaewQ/view?usp=sharing
AWB Files :
- S5KHM6 (Main Cam)
- IMX258 (UW Cam)
- IMX616 (Front Cam)
Noise Model :
- IMX258 (UW Cam)
Config File : https://drive.google.com/file/d/170cwOmb5qZ393bgQ4KsZmgAcaTwWaewQ/view?usp=sharing
AWB Files :
- S5KHM6 (Main Cam)
- IMX258 (UW Cam)
- IMX616 (Front Cam)
Noise Model :
- IMX258 (UW Cam)
AGC apk by BigKaka : https://www.celsoazevedo.com/files/android/google-camera/dev-BigKaka/f/dl29/
Config File : https://drive.google.com/file/d/1oQSqIXX0DONNMo586jMvBoTOUt4e-JTJ/view?usp=sharing
Config File (sharper) : https://drive.google.com/file/d/10WVWi6aaS2Rh8N3asDoSIcA6kTjp5TOY/view?usp=sharing
AWB Files :
- S5KHM6 (Main Cam)
- IMX258 (UW Cam)
- IMX616 (Front Cam)
Noise Model :
- IMX258 (UW Cam)
Config File : https://drive.google.com/file/d/1oQSqIXX0DONNMo586jMvBoTOUt4e-JTJ/view?usp=sharing
Config File (sharper) : https://drive.google.com/file/d/10WVWi6aaS2Rh8N3asDoSIcA6kTjp5TOY/view?usp=sharing
AWB Files :
- S5KHM6 (Main Cam)
- IMX258 (UW Cam)
- IMX616 (Front Cam)
Noise Model :
- IMX258 (UW Cam)
NATURAL: Natural colors,accurate tones and balanced saturation.
CONTRASTE 1: Different color values default from gcam with more contrast and saturation with a cooler tone.
FOOD: Vibrant and saturated colors to make food look better ready for social media.
LANDSCAPE: Vivid colors, slight saturation with brighter pictures good for pictures of nature wild life etc.
NIGHT : HDR plus mode makes the pictures darker to make it look real life.
Use NightSight or HDR+ enhanced for brighter pictures.
BLACK & WHITE: For those who like more dramatic photography and monocromatic style.
MOODY and MATTE/FILM: both have same style for vintage look woth faded shadows. For more dark and moody look enable leica mode and use exposure slider.
KODAK: Pictures like those vintage Kodachrome colors
CLOSE-UP/ZOOM: For " Macro " pictures of object, insects.
HDR+ ENHANCED: Higher dynamic range preserving more highlights with a bit better shadow data.
CONTRAST 2 : System color. More saturated with a warmer tone and deep shadows.
CONTRASTE 1: Different color values default from gcam with more contrast and saturation with a cooler tone.
FOOD: Vibrant and saturated colors to make food look better ready for social media.
LANDSCAPE: Vivid colors, slight saturation with brighter pictures good for pictures of nature wild life etc.
NIGHT : HDR plus mode makes the pictures darker to make it look real life.
Use NightSight or HDR+ enhanced for brighter pictures.
BLACK & WHITE: For those who like more dramatic photography and monocromatic style.
MOODY and MATTE/FILM: both have same style for vintage look woth faded shadows. For more dark and moody look enable leica mode and use exposure slider.
KODAK: Pictures like those vintage Kodachrome colors
CLOSE-UP/ZOOM: For " Macro " pictures of object, insects.
HDR+ ENHANCED: Higher dynamic range preserving more highlights with a bit better shadow data.
CONTRAST 2 : System color. More saturated with a warmer tone and deep shadows.
AGC apk by BigKaka : https://www.celsoazevedo.com/files/android/google-camera/dev-BigKaka/f/dl27/
Config File : https://drive.google.com/file/d/1BvtySTiHm0rxXudVvAa7R33i0d420AvI/view?usp=sharing
AWB Files :
- S5KHM6 (Main Cam)
- IMX258 (UW Cam)
- IMX616 (Front Cam)
Noise Model :
- IMX258 (UW Cam)
Note: I know there are lots of files to download but hear me out. AWB files are meant for fixing the warmth and coldness of the scene. Without those, colors will be too warm. As for the noise model, it fixes the artifacting around the edges on UW cam. I already submitted awb files to the devs and I hope they'll be included in the subsequent apks but until then you need to download these and import them manually. Check the AGC guide below for how.
Config File : https://drive.google.com/file/d/1BvtySTiHm0rxXudVvAa7R33i0d420AvI/view?usp=sharing
AWB Files :
- S5KHM6 (Main Cam)
- IMX258 (UW Cam)
- IMX616 (Front Cam)
Noise Model :
- IMX258 (UW Cam)
Note: I know there are lots of files to download but hear me out. AWB files are meant for fixing the warmth and coldness of the scene. Without those, colors will be too warm. As for the noise model, it fixes the artifacting around the edges on UW cam. I already submitted awb files to the devs and I hope they'll be included in the subsequent apks but until then you need to download these and import them manually. Check the AGC guide below for how.
NATURAL: Natural colors,accurate tones and balanced saturation.
CONTRASTE 1: Different color values default from gcam with more contrast and saturation with a cooler tone.
FOOD: Vibrant and saturated colors to make food look better ready for social media.
LANDSCAPE: Vivid colors, slight saturation with brighter pictures good for pictures of nature wild life etc.
NIGHT : HDR plus mode makes the pictures darker to make it look real life.
Use NightSight or HDR+ enhanced for brighter pictures.
BLACK & WHITE: For those who like more dramatic photography and monocromatic style.
MOODY and MATTE/FILM: both have same style for vintage look woth faded shadows. For more dark and moody look enable leica mode and use exposure slider.
KODAK: Pictures like those vintage Kodachrome colors
CLOSE-UP/ZOOM: For " Macro " pictures of object, insects.
HDR+ ENHANCED: Higher dynamic range preserving more highlights with a bit better shadow data.
CONTRAST 2 : System color. More saturated with a warmer tone and deep shadows.
CONTRASTE 1: Different color values default from gcam with more contrast and saturation with a cooler tone.
FOOD: Vibrant and saturated colors to make food look better ready for social media.
LANDSCAPE: Vivid colors, slight saturation with brighter pictures good for pictures of nature wild life etc.
NIGHT : HDR plus mode makes the pictures darker to make it look real life.
Use NightSight or HDR+ enhanced for brighter pictures.
BLACK & WHITE: For those who like more dramatic photography and monocromatic style.
MOODY and MATTE/FILM: both have same style for vintage look woth faded shadows. For more dark and moody look enable leica mode and use exposure slider.
KODAK: Pictures like those vintage Kodachrome colors
CLOSE-UP/ZOOM: For " Macro " pictures of object, insects.
HDR+ ENHANCED: Higher dynamic range preserving more highlights with a bit better shadow data.
CONTRAST 2 : System color. More saturated with a warmer tone and deep shadows.
AGC apk by BigKaka : https://www.celsoazevedo.com/files/android/google-camera/dev-BigKaka/f/dl26/
Noise Models : https://drive.google.com/drive/folders/1zfrRXYZ7x_zPjt9y73KTmwrWLdSVDx-e?usp=sharing
Config File : https://drive.google.com/file/d/1XrjFD-LpKM-TZSBnWygq0pzZaDW0ybJZ/view?usp=sharing
Note: The noise models make as much difference as the config file. There are noise models for each sensor but all you need is M52 IMX258 model for UW cam. Without this UW cam has artifacting around the edges.
First import it from "More settings > Custom File > Import Noise Model" then navigate to "More settings > Lens Settings > UW (0.6x) > Noise Model > Noise Model" . Scroll to the top from the list and select M52's model.
Noise Models : https://drive.google.com/drive/folders/1zfrRXYZ7x_zPjt9y73KTmwrWLdSVDx-e?usp=sharing
Config File : https://drive.google.com/file/d/1XrjFD-LpKM-TZSBnWygq0pzZaDW0ybJZ/view?usp=sharing
Note: The noise models make as much difference as the config file. There are noise models for each sensor but all you need is M52 IMX258 model for UW cam. Without this UW cam has artifacting around the edges.
First import it from "More settings > Custom File > Import Noise Model" then navigate to "More settings > Lens Settings > UW (0.6x) > Noise Model > Noise Model" . Scroll to the top from the list and select M52's model.
SGCAM apk by shamim : https://www.celsoazevedo.com/files/android/google-camera/dev-shamim/f/dl45/
Config File : https://drive.google.com/file/d/1lSTrNS_DYColtW58_BuVagKWBk1nKBkE/view?usp=sharing
Note: Test config.
Config File : https://drive.google.com/file/d/1lSTrNS_DYColtW58_BuVagKWBk1nKBkE/view?usp=sharing
Note: Test config.
MGC apk by BSG : https://www.celsoazevedo.com/files/android/google-camera/dev-bsg/f/dl151/
Noise Model : https://drive.google.com/file/d/1NxpZdpAl-oZZqK7cfqfdb_XUyKojhLi2/view?usp=sharing
Config File : https://drive.google.com/file/d/1oL_6rufwGLL4Hb8_NKxnxfld7pbbxLWx/view?usp=sharing
Note: Test config.
Noise Model : https://drive.google.com/file/d/1NxpZdpAl-oZZqK7cfqfdb_XUyKojhLi2/view?usp=sharing
Config File : https://drive.google.com/file/d/1oL_6rufwGLL4Hb8_NKxnxfld7pbbxLWx/view?usp=sharing
Note: Test config.
SGCAM apk by shamim : https://www.celsoazevedo.com/files/android/google-camera/dev-shamim/f/dl44/
Config Files : https://drive.google.com/file/d/1mUkc_gqCxCEEazZY_GF20JBzKjyBsxoL/view?usp=sharing
Note: Video does not work, patcher is not applied. Only basic stuff works. credit @abhiwanderlust
Config Files : https://drive.google.com/file/d/1mUkc_gqCxCEEazZY_GF20JBzKjyBsxoL/view?usp=sharing
Note: Video does not work, patcher is not applied. Only basic stuff works. credit @abhiwanderlust
SGCAM apk by Shamim : https://www.celsoazevedo.com/files/android/google-camera/dev-shamim/f/dl35/
MGC apk by BSG : https://www.celsoazevedo.com/files/android/google-camera/dev-bsg/f/dl134/
Config File : https://drive.google.com/file/d/15__5jI6zAhqwT4daVsWkV3Y7bQrkTuQ-/view?usp=sharing
Note: Made by Ashwaa and discontinued but wanted to share it anyway. Originally was for sgcam 8.7 but apparently it works on mgc 8.7 as well.
MGC apk by BSG : https://www.celsoazevedo.com/files/android/google-camera/dev-bsg/f/dl134/
Config File : https://drive.google.com/file/d/15__5jI6zAhqwT4daVsWkV3Y7bQrkTuQ-/view?usp=sharing
Note: Made by Ashwaa and discontinued but wanted to share it anyway. Originally was for sgcam 8.7 but apparently it works on mgc 8.7 as well.
LMC apk by hasli : https://www.celsoazevedo.com/files/android/google-camera/dev-hasli/f/dl14/
Library file : https://drive.google.com/file/d/1jx5ljC0Pgjgn7cvCdDW_-yfk9B66bUDW/view?usp=sharing
Config File : https://drive.google.com/file/d/1Ohe1Y_Luz1TQSkPYthf-aEXEzU9dcTgB/view?usp=sharing
Note: With R18, LMC UI has changed. Blue buttons mean on and white buttons mean off.
Library file : https://drive.google.com/file/d/1jx5ljC0Pgjgn7cvCdDW_-yfk9B66bUDW/view?usp=sharing
Config File : https://drive.google.com/file/d/1Ohe1Y_Luz1TQSkPYthf-aEXEzU9dcTgB/view?usp=sharing
Note: With R18, LMC UI has changed. Blue buttons mean on and white buttons mean off.
LMC apk by hasli : https://www.celsoazevedo.com/files/android/google-camera/dev-hasli/f/dl13/
Library file :
V1 : https://drive.google.com/file/d/1OW7I0i1aFYpJbZBb3sbX5IuLAqFvJgfS/view?usp=sharing
V2 : https://drive.google.com/file/d/17DLHzJhMfgSlIMiXaM50oxm6b8HI6KXp/view?usp=sharing
Config File :
V1 : https://drive.google.com/file/d/1srB6VB439O4SmnQMwdJLXYOx2Gt2VJVh/view?usp=sharing
V2 : https://drive.google.com/file/d/1HOiyqWaPUjbAZEUWU0Cbt_xxCchwzEEb/view?usp=sharing
Note: Config has been reworked and now has much better noise/detail ratio. Theres no more upscaling by default. If you liked it you can still enable it by following upscaling guide below.
Library file :
V1 : https://drive.google.com/file/d/1OW7I0i1aFYpJbZBb3sbX5IuLAqFvJgfS/view?usp=sharing
V2 : https://drive.google.com/file/d/17DLHzJhMfgSlIMiXaM50oxm6b8HI6KXp/view?usp=sharing
Config File :
V1 : https://drive.google.com/file/d/1srB6VB439O4SmnQMwdJLXYOx2Gt2VJVh/view?usp=sharing
V2 : https://drive.google.com/file/d/1HOiyqWaPUjbAZEUWU0Cbt_xxCchwzEEb/view?usp=sharing
Note: Config has been reworked and now has much better noise/detail ratio. Theres no more upscaling by default. If you liked it you can still enable it by following upscaling guide below.
LMC apk by hasli : https://www.celsoazevedo.com/files/android/google-camera/dev-hasli/f/dl13/
Library files :
V4 : https://drive.google.com/file/d/1hhL9R894jvJG6Y36BdFjaKbX27Mx860q/view?usp=sharing
V5 : https://drive.google.com/file/d/13E1aTsU3sWFNX9xByuFHsha23ru2zNhw/view?usp=sharing
Config Files :
V4 : https://drive.google.com/file/d/1I2gvQ3tTb4o7joDg6SiwUirJ1bj6UV88/view?usp=sharing
V5 : https://drive.google.com/file/d/1PkLRRY3BndD0ThtMs0gHCDpCmYqYFld4/view?usp=sharing
V5 Sharp : https://drive.google.com/file/d/1_GMYRiV2COC3Mdr9zPv0MW3mC6hKppIZ/view?usp=sharing
Note: V4 is the last version with Black&White Mode, in V5 it is replaced with Vivid mode.
Library files :
V4 : https://drive.google.com/file/d/1hhL9R894jvJG6Y36BdFjaKbX27Mx860q/view?usp=sharing
V5 : https://drive.google.com/file/d/13E1aTsU3sWFNX9xByuFHsha23ru2zNhw/view?usp=sharing
Config Files :
V4 : https://drive.google.com/file/d/1I2gvQ3tTb4o7joDg6SiwUirJ1bj6UV88/view?usp=sharing
V5 : https://drive.google.com/file/d/1PkLRRY3BndD0ThtMs0gHCDpCmYqYFld4/view?usp=sharing
V5 Sharp : https://drive.google.com/file/d/1_GMYRiV2COC3Mdr9zPv0MW3mC6hKppIZ/view?usp=sharing
Note: V4 is the last version with Black&White Mode, in V5 it is replaced with Vivid mode.
LMC apk by hasli : https://www.celsoazevedo.com/files/android/google-camera/dev-hasli/f/dl12/
Library file : https://drive.google.com/file/d/12BJwZUVxxynVzkJuxU62nGiKxi5WT2vD/view?usp=sharing
Config Files :
Soft (Less noise) : https://drive.google.com/file/d/1kjI9Qixe_7lf9HnlXpPe2uYKoNgNobgJ/view?usp=sharing
Sharp (More noise) : https://drive.google.com/file/d/1oOGURWS-GXfBOyG5FUNwDyROury5proa/view?usp=sharing
Library file : https://drive.google.com/file/d/12BJwZUVxxynVzkJuxU62nGiKxi5WT2vD/view?usp=sharing
Config Files :
Soft (Less noise) : https://drive.google.com/file/d/1kjI9Qixe_7lf9HnlXpPe2uYKoNgNobgJ/view?usp=sharing
Sharp (More noise) : https://drive.google.com/file/d/1oOGURWS-GXfBOyG5FUNwDyROury5proa/view?usp=sharing
SGCAM apk by Shamim : https://www.celsoazevedo.com/files/android/google-camera/dev-shamim/f/dl28/
Library file : https://drive.google.com/file/d/1fAnIh947fVtg4Qtz--CzeyM5s5FwPnbn/view?usp=sharing
Config File : https://drive.google.com/file/d/1S9CamzME5XcJcwbIM6O4gl9_MiN_Vrnv/view?usp=sharing
Note: SGCAM doesn't have much fanfare for A73 users but if you wish to test it's here.
Library file : https://drive.google.com/file/d/1fAnIh947fVtg4Qtz--CzeyM5s5FwPnbn/view?usp=sharing
Config File : https://drive.google.com/file/d/1S9CamzME5XcJcwbIM6O4gl9_MiN_Vrnv/view?usp=sharing
Note: SGCAM doesn't have much fanfare for A73 users but if you wish to test it's here.
How to use?
Config:
- Move the files to your phone.
- Install AGC apk.
- Click "More settings" from settings top left.
- Allow file access permission.
- Click "Load Configs" from settings on top left.
- It should give you the location for configs. Default is
- Move .agc file to
- Now click "Load Configs" again and you should see our config. Click load.
Noise Model / AWB:
- Navigate to "More settings > Custom File > Import Noise Model" and select noise models from pop up file manager, repeat for each noise model.
- Navigate to "More settings > Lens Settings > Main (1.0x) > Noise Model > Noise Model"
- Select noise model for S5KHM6 from very top of the list.
- Navigate to "More settings > Lens Settings > UW (0.6x) > Noise Model > Noise Model"
- Select noise model for IMX258 from very top of the list.
- Navigate to "More settings > Lens Settings > Depth/Portrait (1.0x) > Noise Model > Noise Model"
- Select noise model for IMX616 from very top of the list.
Same process for the .gawb files, just replace noise model with awb.
There is a video in our telegram channel if you couldn't find the right menus.
- Move the files to your phone.
- Install AGC apk.
- Click "More settings" from settings top left.
- Allow file access permission.
- Click "Load Configs" from settings on top left.
- It should give you the location for configs. Default is
/sdcard/Download/AGC.8.8/configs/
- Move .agc file to
Download/AGC.8.8/configs/
folder. If "configs" folder doesn't exist, create it yourself.- Now click "Load Configs" again and you should see our config. Click load.
Noise Model / AWB:
- Navigate to "More settings > Custom File > Import Noise Model" and select noise models from pop up file manager, repeat for each noise model.
- Navigate to "More settings > Lens Settings > Main (1.0x) > Noise Model > Noise Model"
- Select noise model for S5KHM6 from very top of the list.
- Navigate to "More settings > Lens Settings > UW (0.6x) > Noise Model > Noise Model"
- Select noise model for IMX258 from very top of the list.
- Navigate to "More settings > Lens Settings > Depth/Portrait (1.0x) > Noise Model > Noise Model"
- Select noise model for IMX616 from very top of the list.
Same process for the .gawb files, just replace noise model with awb.
There is a video in our telegram channel if you couldn't find the right menus.
- Move the files to your phone.
- Create a folder called
- Create a folder called
- Move .xml file to
- Move .so file to
- Install and open LMC app.
- Double click the empty spot between gallery and shutter buttons.
- Select CMR config and click import.
- After it is done do it again (config is too large for a single pass, this makes sure every value is used)
- Create a folder called
LMC8.4
in your main storage.- Create a folder called
LIBS
in LMC8.4 folder.- Move .xml file to
LMC8.4
folder.- Move .so file to
LMC8.4/LIBS
folder.- Install and open LMC app.
- Double click the empty spot between gallery and shutter buttons.
- Select CMR config and click import.
- After it is done do it again (config is too large for a single pass, this makes sure every value is used)
- Move the files to your phone.
- Create a folder called
- Create a folder called
- Create a folder called
- Move .xml file to
- Move .so file to
- Install and open SGCAM app.
- Double click the empty spot between camera rotation and shutter buttons.
- Select CMR config and click import.
- Create a folder called
SGCAM
in your main storage.- Create a folder called
LIB
in SGCAM folder.- Create a folder called
XML
in SGCAM folder.- Move .xml file to
SGCAM/XML
folder.- Move .so file to
SGCAM/LIB
folder.- Install and open SGCAM app.
- Double click the empty spot between camera rotation and shutter buttons.
- Select CMR config and click import.
Keep in mind that name of .xml and .so file in this thread is subject to change but installation will be the same. If you suspect your quality is not as good please make sure to check if library file is loaded or not. 3rd video down below shows you how to do that in LMC.
Actual photo taken by any gcam is always going to be 12mp like all other 3rd party camera apps. However with the power of upscaling you can get photos up to 164mp. Some of the configs in this thread has it set to 20mp while newer ones have it disabled. You can still enable and set it to whatever value you desire. However beware, this adds extra processing time so if you are in a hurry and require a few fast clean shots it might not be worth it. Here is a step by step guide for LMC:
-open settings
-navigate to processing functions > upscale / downscale
-flip the first switch on
-click main camera and set it's value, you can use this cheat sheet:
In some configs we have upscaling shortcut assigned to long pressing camera change button so try if it's there. If it's not you can set it by choosing Upscale from Processing functions > Viewfinder settings > Long tap on Change front camera.
-open settings
-navigate to processing functions > upscale / downscale
-flip the first switch on
-click main camera and set it's value, you can use this cheat sheet:
x1.0 for 12mp (3000x4000 (4:3))
x1.4 for 24mp (4200x5600 (4:3))
x1.6 for 31mp (4800x6400 (4:3))
x2.0 for 48mp (6000x8000 (4:3))
x2.3 for 63mp (6900x9200 (4:3))
x2.4 for 69mp (7200x9600 (4:3))
x2.5 for 75mp (7500x10000 (4:3))
x3.0 for 108mp (9000x12000 (4:3))
x10.0 for 164mp (11100x14800 (4:3))
-click front camera and set it's value, heres cheat sheet for front cam:x1.0 for 8mp (2448x3264 (4:3))
x1.4 for 16mp (3426x4568 (4:3))
x2.0 for 32mp (4896x6528 (4:3))
x2.5 for 50mp (6120x8160 (4:3))
x3.0 for 72mp (7344x9792 (4:3))
x10.0 for 109mp (9056x12076 (4:3))
In some configs we have upscaling shortcut assigned to long pressing camera change button so try if it's there. If it's not you can set it by choosing Upscale from Processing functions > Viewfinder settings > Long tap on Change front camera.
All the credit goes to @PatrickALVS in A73Gcam telegram group.
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