How to keep an app since SDK 16 running foreground every time? - Android Q&A, Help & Troubleshooting

I’m building an app to monitoring the android device in Kotlin.
I’ve looked in 3 obstacles:
1 - The difference between android under and post 7.0.0 on foreground services
2 - Chinese ROMs, with an agressive kill of apps when user do a simple clean on last apps
3 - which android tool can I use for resolve it.
I’ve seen until now: AlarmManager, permanent notifications, accessibility service… Broadcast receiver to up application when system restart and battery optimization, but all my tries didn’t seem to help me in solving.
For example, the follow tutorial doesn’t work after I clean the lastest apps used in a Chinese ROM (Xiaomi): robertohuertas.com/2019/06/29/android_foreground_services

Showing permanent notification is the only way according to android docs. But chinese rom use there own task management to save battery which even closes permanent notification, If user manual cleans app from resent task. Currently i am ignoring those devices/ limited support. I am looking for better solution.

Related

App ops, Android system, location : explanation?

Hello guys.
As my question is quite general, I've decided to ask it on this section. I hope it's appropriate.
My question is actually quite general and I haven't found any proper answer so far.
It's been a while that Android includes an app ops functionnality that allows to have advanced control over permissions. I think it's hidden by default on stock ROMs but that's not the case on my phone.
I'm currently using a Zuk Z2 with the AEX Rom, running oreo 8.1
I've noticed for a while (and I think it's the same on all latest Android versions and all phones), that some apps use location even when location is turned off on the phone.
I've removed google apps (in favor of microG) so I've limited a lot of processes. However, there is still this Android System process that uses location all the time. When I click on the app, there are actually two locations that are displayed (as you can see here : https://imgur.com/a/2y2tUQb ) and one is always running, again, even if my location is completely off.
So here come my questions :
1) Why is location still running for android system even when it's turned off. Is it safe to disable it? Does it impact battery life? Is my data leaked still? If I remember correctly, when I had google services on my phone, there was the same issue...
2) Why are there different instances of location for the same process? I'm guessing it's because it's not the exact same things, but app obs doesn't give any precision and I'm not entirely satisfied.
Thank you for reading and thank you in advance for your potential answers.
Up

Two problem about creating shourcut and Wake-up Tracker

Thx for reading, and please forgive my poor English.
The Greenify is the best app I had been used for cut-off apps. But I found that there are two problem:
(My phone is Xiaomi MI MIX 2S running MIUI 10 8.6.18 [Android O], with Greenify Version 4.1)
1. Can not create hibernation shortcut
When I tried to create a hibernation shortcut, the Greenify noticed that the creating was succeed. But I can not find out the shortcut in my launcher. Neither type of shortcut can be created. And I don't know why and how to fix it.
An additional detail:
when I used the permission manager to make sure that the Greenify need to request my approval to create a shortcut and then I tried to create a hibernation shortcut, there was no prompt box for requesting approval (Under normal circumstances there should be a prompt box). It seemed that somehow the Greenify did not work properly in shortcut creating.
2. Wake-up Tracker often disabled for unknown reasons
I enabled Wake-up Tracker and after a while I found that Wake-up Tracker had been disabled. Then I enabled again, after a while it had been disabled again.
Please tell me how to fix these problem, any guidance is appreciated.
AnnAngela said:
Thx for reading, and please forgive my poor English.
The Greenify is the best app I had been used for cut-off apps. But I found that there are two problem:
(My phone is Xiaomi MI MIX 2S running MIUI 10 8.6.18 [Android O], with Greenify Version 4.1)
1. Can not create hibernation shortcut
When I tried to create a hibernation shortcut, the Greenify noticed that the creating was succeed. But I can not find out the shortcut in my launcher. Neither type of shortcut can be created. And I don't know why and how to fix it.
An additional detail: when I set the Greenify need to request permission to create a shortcut and tried to create a hibernation shortcut, there was no prompt box for requesting permission ( Under normal circumstances there should be a prompt box ). It seemed that somehow the Greenify did not work properly in shortcut creating.
2. Wake-up Tracker often disabled for unknown reasons
I enabled Wake-up Tracker and after a while I found that Wake-up Tracker had been disabled. Then I enabled again, after a while it had been disabled again.
Please tell me how to fix these problem, any guidance is appreciated.
Click to expand...
Click to collapse
I am surprised by the details furnished by you including device details, though it is your first post. Usually it is a case of "Unable to create shortcut, anyone has any idea" sort of posts that we encounter. Thanks for providing the details, though I may not be able to offer solutions.
I also faced the Wakeup Tracker issue before I uninstalled Greenify, so I have no solution for this.
Reg. the creation of shortcut, try clearing the data and cache of Greenify/uninstall and reinstall etc. If none of them work, MIUI may be an issue since it reportedly heavily modifies the Android OS.
Having said that, I would advice you to uninstall Greenify and use your phone for a couple of days. You may be surprised by the way the phone behaves even without Greenify.
I am one of the votaries of the belief (with reason) that apps like Greenify are not needed on Oreo since the OS itself behaves very well. Unless you specifically find some app misbehaving which can not be controlled without apps like Greenify, simply enjoy your device.
tnsmani said:
I am surprised by the details furnished by you including device details, though it is your first post. Usually it is a case of "Unable to create shortcut, anyone has any idea" sort of posts that we encounter. Thanks for providing the details, though I may not be able to offer solutions.
I also faced the Wakeup Tracker issue before I uninstalled Greenify, so I have no solution for this.
Reg. the creation of shortcut, try clearing the data and cache of Greenify/uninstall and reinstall etc. If none of them work, MIUI may be an issue since it reportedly heavily modifies the Android OS.
Having said that, I would advice you to uninstall Greenify and use your phone for a couple of days. You may be surprised by the way the phone behaves even without Greenify.
I am one of the votaries of the belief (with reason) that apps like Greenify are not needed on Oreo since the OS itself behaves very well. Unless you specifically find some app misbehaving which can not be controlled without apps like Greenify, simply enjoy your device.
Click to expand...
Click to collapse
Yes, You may not know that, a huge of apps which developed by Chinese companies and provided to Chinese are designed strangely, they are trying their best to stay in background, call up each other and push AD messages in notification bar (sorry if I misspelled), and the companies have some agreements with Chinese OS provider such as Xiaomi to avoid killing their apps in background in Chinese version Android OS.
One of them is Alibaba, which has three most popular app in China, Taobao, Tmall and Alipay. But these three apps are designed to keep alive as much as possible and call up each other very frequently, just for push messages to introduce goods on Taobao and Alibaba's wide range of services, applications and merchandise. (BTW, I believe that a big part of app keep-alive technologies are developed by the programmers in Chinese companies.)
So maybe You can understand my pain. _зゝ∠)_
Adb permission
I need a help. How can i turned on wakeup tracker. I don't know how to give adb permission to greenify. Please post a video. Or screenshot step by step. Please help me. Its urgent for me. I am using Samsung galaxy j200G lollipop 5.1.1 ?
AvishekOfficial said:
I need a help. How can i turned on wakeup tracker. I don't know how to give adb permission to greenify. Please post a video. Or screenshot step by step. Please help me. Its urgent for me. I am using Samsung galaxy j200G lollipop 5.1.1 ?
Click to expand...
Click to collapse
Greenify version? Rooted? Xposed?
For my device details see signature block.
I assume you don't require a video how to search the web. Such a serach with the keyworks "greenify", "help" and "adb" provides e.g. following page at the very top that most likely satisfies your needs.

Development: Avoid Samsung Device Care Wakeup alarms

Hello,
We have an Android SDK that many applications use for marketing purposes. Specifically, it allows to deliver personalized messages to their users based on geofences or bluetooth beacons detection.
We've dedicated tons of hours optimizing the thing so it does not drain user battery or annoys in any matter, however we are now facing a new challenge: Samsung Device Care (Samsung Maintenance).
As you may know, this application comes pre installed in (I think) all Samsung devices, and helps users to keep the battery consumption low by detecting apps that consume too much in the background among other features.
Our software behaves correctly in almost all categories, including battery consumption and background time execution, however the Samsung device care app sometimes shows an alert saying that the "application generates too many wake ups". In order to avoid this, we are being more aggressive by explicitly controlling the number wake ups when app is in the background, the only problem is that we are completely blind right now, as we don't know what is the threshold that Samsung Device care app uses to trigger this alarm.
I have decompiled the Samsung device care app, however the app seems to be written in C / C++, hampering the task.
I have also run tests for days in a couple of Samsung phones in order to see if I can trigger the alarm, so I can try to empirically found what the limits are, however I haven't been able to trigger any alarm, even though my testing code is requesting an AlarmManager callback every 30 seconds.
Finally, I have also opened a ticket in the Samsung Developer site, but no answer so far...
Do you have any idea where can I find this information? :crying:

Just tweak it [S10] - debloat, plugins, battery...

S10 stock cleanup actions
yet another phone this year V30->Note9->6T->Mi9->S10, time to update guides. Goal is to have a clean phone after each update, and since reboot doesn't happen often, but defly happens during upgrade, i'm putting cleanup commands into a [boot] script.
Boot script
What it does:
* choose 8 categories of app removal, in the beginning of the file
* use more switch to disable some questionable/helpful stuff
* disable up to 100 apps (preferred method, ppl can reenable)
* remove usage access for google (this is the part not tested and disabling device/trust admins can not be scripted)
Tested ok on recent stock. Not much to put in script unlike on MIUI which used shady practices. Samsung not hiding processes, not persisting apps (except Payment triggers some soft brick - interesting), and not sending tcpdumps to china. Also not having privacy policy in every basic app. It's on you to accept Fourthsquare, Google and then Bixby 3rd party stuff. Well I initially sniffed network and saw some 3rd party sleezy connection to social networking IPs (nonstop monitoring by facebook etc), but that is obvious and well known, and is swiftly disabled by the script. Will see later if there's something that could be tweaked further.
Download: file attached
Installation:
- run in su terminal or add to any startup script
Which plugins to use for S10
Similarly to Mi9, collecting what i think is useful to keep on stock rooted firmware.
Magisk plugins:
* Riru - Core, Riru - Ed Exposed -- brings XPosed to Pie. Need also installer. Now i use old version 0.3 as i feel new SandHook/Yahfa bipolar releases make phone sluggish. This case is to be monitored.
* Bixby button remapper -- so in Samsung case, extra key is not released after Bixby debloat, so we first slap this plugin into phone and then customize via Xposed Edge
* libsecure_storage companion -- helps us keep the bluetooth pairings
* (optional) Universal GMS Doze (disappeared from repository?) or Sysconfig patches -- cools down GMS services. Questionable impact but i use it.
* (optional) YouTube Vanced black themed -- brings usable YouTube experience
* (impossible) QuickSwitch -- we can't have Quickstep+Hyperion (the most capable Quickstep launcher) as there's no pill but Samsong custom recents
* (untested) - FDE, LKT - in a short time, i wasn't optimizing battery. It's good out of the box(!).
XPosed plugins:
* Xposed Edge Pro - a must have and best plugin. Here, by the way, we will modify Bixby button once again, including double press and long press. Because why not
* XPrivacy - Screw the big brother. Must have. Disabling analytics, tracking, telephony, network, identification for all visible apps and all Google and Samsung apps with some exceptions.
* Firefds kit - so this is our main customization app, and enables the very important call recording, which is beutifully integrated into call history. Bye bye external apps. Also we will remove Restart action and replace with Recovery action and rename it to Restart
* afWall - Problems with this firewall and some VPN clients. Should by disabled in Xposed but we want to have this tool
* (optional) Exi for Swiftkey - you can make Swiftkey great again, GBoard is still the best, Samsung keyboard is very good, but too tall and leaves gap in fullscreen mode
Other stuff
- booting to non-root ok, impact could be lost pairings. So let's have it as a useful safe mode.
- after setup, never used Power+Bixby+VolUp. After shutdown, not needed. Rebooting with modified Restart command. Easy
- using TWRP to flash blank Samsung boot logos, to see files etc
- not using multidisabler as i'm on stock and i do want encryption, ROMs/MODs push it thou
- next monthly upgrade will be interesting, as it'll be time to verify what unwanted stuff is being reenabled
Battery saving:
- unknown effect of {LSpeed, Naptime, Servicely, FDE, LKT, Universal GMS Doze, Sysconfig patcher} in such a short time.
- not big impact by dozes (AOD, fp icon, dt2wake, raise2wake) - that's cool.
- having 1.0-1.2%/hr in home wifi standby, VPN, locationtracking, perma BT watch, and tons of widgets and apps
- not liking memory filling up by thrashware even after debloat. From 4GB free to 2GB free quickly.
someone try on this ?
Hi dogg,
seems to work on multiple apps, and has some exceptions thrown, but how can i enable apps again if i need?
thanks and regards.
pep086 said:
Hi dogg,
seems to work on multiple apps, and has some exceptions thrown, but how can i enable apps again if i need?
thanks and regards.
Click to expand...
Click to collapse
do you know which process has thrown fc or exception?
many ways to reenable individually, or to roll back the script, use the undo script attached
i thought i'd debloat Device Security (which i think is the Mcaffe antivirus noone uses), but it's hooking up to app installations. So when disabled, gplay installations will freeze forever. So another memory hog has to stay in memory.
Hi dog,
I will try again I think, there were apps that I don't have already on the phone maybe.
I sure had to enable Samsung experience and contacts sync only cause I needed them.
Thank you very much.
Like the way you inspect packages and traffic.
Keep sharing your knowledge with us.
Thanks.
Thank you very much! Really helpful script, pretty much what I was looking for.
doggydog2 said:
S10 stock cleanup actions
yet another phone this year V30->Note9->6T->Mi9->S10, time to update guides. Goal is to have a clean phone after each update, and since reboot doesn't happen often, but defly happens during upgrade, i'm putting cleanup commands into a [boot] script.
Boot script
What it does:
* choose 8 categories of app removal, in the beginning of the file
* use more switch to disable some questionable/helpful stuff
* disable up to 100 apps (preferred method, ppl can reenable)
* remove usage access for google (this is the part not tested and disabling device/trust admins can not be scripted)
Tested ok on recent stock. Not much to put in script unlike on MIUI which used shady practices. Samsung not hiding processes, not persisting apps (except Payment triggers some soft brick - interesting), and not sending tcpdumps to china. Also not having privacy policy in every basic app. It's on you to accept Fourthsquare, Google and then Bixby 3rd party stuff. Well I initially sniffed network and saw some 3rd party sleezy connection to social networking IPs (nonstop monitoring by facebook etc), but that is obvious and well known, and is swiftly disabled by the script. Will see later if there's something that could be tweaked further.
Download: file attached
Installation:
- run in su terminal or add to any startup script
Which plugins to use for S10
Similarly to Mi9, collecting what i think is useful to keep on stock rooted firmware.
Magisk plugins:
* Riru - Core, Riru - Ed Exposed -- brings XPosed to Pie. Need also installer. Now i use old version 0.3 as i feel new SandHook/Yahfa bipolar releases make phone sluggish. This case is to be monitored.
* Bixby button remapper -- so in Samsung case, extra key is not released after Bixby debloat, so we first slap this plugin into phone and then customize via Xposed Edge
* libsecure_storage companion -- helps us keep the bluetooth pairings
* (optional) Universal GMS Doze (disappeared from repository?) or Sysconfig patches -- cools down GMS services. Questionable impact but i use it.
* (optional) YouTube Vanced black themed -- brings usable YouTube experience
* (impossible) QuickSwitch -- we can't have Quickstep+Hyperion (the most capable Quickstep launcher) as there's no pill but Samsong custom recents
* (untested) - FDE, LKT - in a short time, i wasn't optimizing battery. It's good out of the box(!).
XPosed plugins:
* Xposed Edge Pro - a must have and best plugin. Here, by the way, we will modify Bixby button once again, including double press and long press. Because why not
* XPrivacy - Screw the big brother. Must have. Disabling analytics, tracking, telephony, network, identification for all visible apps and all Google and Samsung apps with some exceptions.
* Firefds kit - so this is our main customization app, and enables the very important call recording, which is beutifully integrated into call history. Bye bye external apps. Also we will remove Restart action and replace with Recovery action and rename it to Restart
* afWall - Problems with this firewall and some VPN clients. Should by disabled in Xposed but we want to have this tool
* (optional) Exi for Swiftkey - you can make Swiftkey great again, GBoard is still the best, Samsung keyboard is very good, but too tall and leaves gap in fullscreen mode
Other stuff
- booting to non-root ok, impact could be lost pairings. So let's have it as a useful safe mode.
- after setup, never used Power+Bixby+VolUp. After shutdown, not needed. Rebooting with modified Restart command. Easy
- using TWRP to flash blank Samsung boot logos, to see files etc
- not using multidisabler as i'm on stock and i do want encryption, ROMs/MODs push it thou
- next monthly upgrade will be interesting, as it'll be time to verify what unwanted stuff is being reenabled
Battery saving:
- unknown effect of {LSpeed, Naptime, Servicely, FDE, LKT, Universal GMS Doze, Sysconfig patcher} in such a short time.
- not big impact by dozes (AOD, fp icon, dt2wake, raise2wake) - that's cool.
- having 1.0-1.2%/hr in home wifi standby, VPN, locationtracking, perma BT watch, and tons of widgets and apps
- not liking memory filling up by thrashware even after debloat. From 4GB free to 2GB free quickly.
Click to expand...
Click to collapse
Hello sir! I'm new to all of this, but i have learned a lot by myself already, and I have researched a lot about privacy on android and how to make the phone more secure! I need some help and guidance please. I have debloated and played around with my s10 for a long time, and had to flash and root 4 times now. The first two times the AOD didn't work anymore(probably bixby related -_-), the next two times I had a soft brick because I removed payment services! I'm really annoyed as I just want to use regular phone functions and I want be as untrackable and unhackable as possible. I mostly use apps from F-DROID, almost all! I also removed google services, basically everything google is gone.
As I understand your Guide, I have to:
1. Flash/root my phone again
2. Run script in su terminal <- here I have no idea what where and how to do this.
or
1. Flash/Root my phone again
2. Install all magisk plugins
3. Install Xposed and all plugins
4. Now Run script in su terminal <- again no idea what where and how to do this.
Could you explain in which order I should proceed and how to do the scripting part? And, when I use Xprivacy, can I leave google play services on the phone for youtube vanced?(or even other nongoogle apps and feed them false data?)Right now I use NewPipe for youtube. does XMPP work?
My biggest concern is privacy, I dont want any f***ers to spy on me. Another thing, how good is LineageOS, I could buy a SDcard and I try it or sell my stupid phone!
Thank you if you could help me, I'm really annoyed by all of this, I used a normal 30 € phone for 2 years because I don't want be spied on and not forget how nice the world is without phone that knows everything, for and about me!
---------- Post added at 11:39 PM ---------- Previous post was at 11:34 PM ----------
.TanTien said:
Thank you very much! Really helpful script, pretty much what I was looking for.
Click to expand...
Click to collapse
Hi! Can you tell me how to do the scripting??? greetings
kejsix said:
Hello sir! I'm new to all of this, but i have learned a lot by myself already, and I have researched a lot about privacy on android and how to make the phone more secure! I need some help and guidance please. I have debloated and played around with my s10 for a long time, and had to flash and root 4 times now. The first two times the AOD didn't work anymore(probably bixby related -_-), the next two times I had a soft brick because I removed payment services! I'm really annoyed as I just want to use regular phone functions and I want be as untrackable and unhackable as possible. I mostly use apps from F-DROID, almost all! I also removed google services, basically everything google is gone.
As I understand your Guide, I have to:
1. Flash/root my phone again
2. Run script in su terminal <- here I have no idea what where and how to do this.
or
1. Flash/Root my phone again
2. Install all magisk plugins
3. Install Xposed and all plugins
4. Now Run script in su terminal <- again no idea what where and how to do this.
Could you explain in which order I should proceed and how to do the scripting part? And, when I use Xprivacy, can I leave google play services on the phone for youtube vanced?(or even other nongoogle apps and feed them false data?)Right now I use NewPipe for youtube. does XMPP work?
My biggest concern is privacy, I dont want any f***ers to spy on me. Another thing, how good is LineageOS, I could buy a SDcard and I try it or sell my stupid phone!
Thank you if you could help me, I'm really annoyed by all of this, I used a normal 30 € phone for 2 years because I don't want be spied on and not forget how nice the world is without phone that knows everything, for and about me!
---------- Post added at 11:39 PM ---------- Previous post was at 11:34 PM ----------
Hi! Can you tell me how to do the scripting??? greetings
Click to expand...
Click to collapse
i keep running the script without problems for months now.
to run a script, you need a terminal - use any terminal app, like 3C Toolbox or via adb. this is too generic question.
to run it, you need root, so at least magisk must be present. you normally flash your favorite image, then magisk, in magisk you load riru & exposed plugins, then in edxposed installer you load xposed plugins like xprivacy. i run strict privacy settings on every device and this requires some work. first thing i do, is press RESTRICT button on all visible apps for these permissions: identification, network, telephony, tracking, analytics, then calendars, call log, contacts, location and messages. Then i go throught individual apps and deselect neccessary permisions for some apps. on the left menu, i set 'restrict new apps'. this way i can control non-geeky users phone who install any app without thinking and accept all default choices without any hesitation. It's very hard for them to fight XPrivacy thou - they don't understand it luckily. unlike personal computers, phones are great source of snitching, as you have so much data available to the aggressive companies like SIM details (=directly identify your person via Telco), IP (=directly identify you via ISP), web services where you provided real name and phone number (to "recover account" blabla, real meaning is to identify you), tracking and analytics (to study your behaviour and share your internet presence via a token between companies). All this needs to be cloaked and more: browser should be full of privacy plugins, ad killers, fingerprinting killers, webrtc killers etc etc. VPN set, and firewall set. I also use Changer xposed plugin to cloak extra items not covered by XPrivacy.
I have zero ads in any apps. Zero suggestions by ecommerces. Getting dummy search hits without relevance. Always a blank user to each web or app. Email on the best privacy provider, with zero knowledge encryption, this and any web services paid via bishuffled bitcoin bought in person (Coinbase? really? send ID? seriously people do this?). IP is cloaked via trustful service, in case of need to express opinion on the internet (which i've given up to) in todays politically correct era, use also Tor and Psiphon. No phone numbers, IMEIs, IMSIs etc etc provided. No real names ever entered anywhere. I can have great privacy with commercial tools, and don't need to use Snowden type of blank OS. But it's difficult to set up, it takes hours and some tweaking later. I just find mobile encryption too weak, on PC an intruder (govt) needs to: enter BIOS password, enter TCG-OPAL password, enter bitlocker password, enter Windows password, enter fingerprint to USB flash drive with keys to data drive, unlock bitlocker of the same USB, then unlock data drive -- it's just 20 seconds of extra work once per day. Mobile phone: password and FBE and sensitive app locking. Don't use fingerprints (they belong to govt) or facelock (too lame). Or use fingerprints with lockdown feature (use AI button to map this action with XPosed Edge plugin), and lock it deeply when going to customs or similar checkpoint. Your data and thougts are yours and noone elses.
Yeah install instructions man.. su in terminal and then what ???
kejsix said:
Hi! Can you tell me how to do the scripting??? greetings
Click to expand...
Click to collapse
I opened the script file and picked the features i wanted to disable by manually typing the commands. Standard procedure should be starting terminal as su
Code:
chmod 777 filename.sh
and after that
Code:
./filename.sh
You should be in your file directory of course. You can get there by typing
Code:
cd /your/file/path
Will that work on Snapdragon s10?
i'm running this for 8 months now after each boot. And i didn't update firmware as the rooting process was so exhausting. Now i'm going through the horror again, hoping to keep the encryption, therefore strictly without a custom ROM.
Script should work on Snapdragon, it's not related to the root process.
easier way to run the .sh file:
1. su
2. cd /storage/emulated/0
3. sh S10_cleanup.sh

Custom ROM advice - looking for a kid friendly solution

First off, I hope I'm posting this in the correct area
This may be a fantasy, but I will state my idea, and if you know any way of making it a reality, OR if it already exists, I would really appreciate your advice & help!
The idea is basically a super lightweight custom ROM that would work (be able to be flashed on) on a lot of different devices. (multiple android phones & tablets)
Preferably, I want it to run on the most stable version of Android
No play store, only a predetermined set of apps to be installed along with the ROM
No stock browser or any native apps that have a browser built-in
Basically, there are a few applications for this product, 2 that come to mind.
The most obvious, Kid friendly - I know about the parental controls available, I want something 'bulletproof'.
To ensure productivity and reduce distractions among employees.
I would also want a browser that is whitelist-based that can have the whitelist updated remotely, every time the browser connects to the internet, (either on startup of the app or in the background) it would check the whitelist and update itself with the new definitions. Ideally, I would want a Chrome-based browser with a built-in adblocker.
I know the lines are blurred from custom ROM to custom apps. I hope I'm not dreaming of a unicorn
(The native apps preferred would be The Camera, Messages and phone apps)
I think what you looking for is "Kids Space" from oxygenOs and colorOs 13. Now even I'm looking for the same for older oneplus devices.
You had any luck with it?

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