I am working on an application that has a requirement to lock the RAT on devices. I just want to lock only two modes i.e. "LTE Only" or "WCDMA Only".
We can do this without using an app from phone dial app by running ##4636## and choosing Phone Information and the "LTE Only" or "WCDMA Only".
I have also tried QXDM to set these values on NV Item 10 but it doesn't persist on reboot. So if some one have good knowledge of QXDM and share that knowledge then it would be really helpful.
My final goal is to do this from Android application that has root access.
Related
If I am charging my Huawei Phone and go to Settings --> Battery there is at the Top a Value, that shows how mach time my Phone needs until it is fully charged. My Question now is, if there is a way to extract this value with Flutter and use it in my App?The Battery value
Try to use battery_level package for get information about a device battery state.
Yes you can get the battery level from a huawei phone. Use this package: https://pub.dev/packages/battery. It will help grab the battery level information and allow you to use and manipulate it in flutter.
I tested this on honor v30 and it works fine.
I'm developing a tracking application and I need to prevent users from turning off the basic sensors used to determine the location. I can not modify the devices ROM or have root access (or at least it would be very desirable to had not), but I thought of using the Device Administration API to perform these functions through the Profile Owner or Device Owner modes. I'm basically looking for a method to block these functions in Android settings.
I'm unsure about whether this is possible and how to do it, I have not found examples in GitHub for applications that have implemented this. Could anyone give me a light, some example or specific documentation?
I tried to follow these three documentations, without success in finding a solution to this specific feature:
https://source.android.com/devices/tech/admin
https://developer.android.com/guide/topics/admin/device-admin
https://developers.google.com/android/management/introduction
This is an excerpt from what I've been trying:
setUserRestriction(UserManager.DISALLOW_CONFIG_WIFI, true);
setUserRestriction(UserManager.DISALLOW_CONFIG_MOBILE_NETWORKS, active);
setUserRestriction(UserManager.DISALLOW_CONFIG_BLUETOOTH, active);
private void setUserRestriction(String restriction, boolean disallow){
if (disallow) {
mDevicePolicyManager.addUserRestriction(mAdminComponentName, restriction);
} else {
mDevicePolicyManager.clearUserRestriction(mAdminComponentName,
restriction);
}
}
DISALLOW_CONFIG_BLUETOOTH
Added in API level 18
public static final String DISALLOW_CONFIG_BLUETOOTH
Specifies if a user is disallowed from configuring bluetooth. This does not restrict the user from turning bluetooth on or off. The default value is false.
This restriction doesn't prevent the user from using bluetooth. For disallowing usage of bluetooth completely on the device, use DISALLOW_BLUETOOTH.
This restriction has no effect in a managed profile.
Key for user restrictions.
Type: Boolean
You cannot prevent them from turning GPS, WIFI and Bluetooth off. What you can do is have an implementation as below or use this library.
https://github.com/KI-labs/gps-permission-checks-livedata
You can't, obviously for security reasons. If you want to achive something like that you'll probably need to modify the devices ROM. You should create a BroadcastReceiver and keep tracking Internet and Bluetooth connection changes, than you can properly handle it when user disconnect them pausing the service, showing a dialog, finishing the application or whatever you need to do.
It would be pretty weird if an app could have some control of user settings, imagine if you install an app, then suddently you can't disable wi-fi anymore until you unistall it. You can't do that for a good reason
Preventing bluetooth/wifi disconnection will also prevent usage of aircraft mode, that is a security issue bounded in the ROM and not overridable.
As suggested above your option is to monitor for wifi/bluetooth/gps deactivations and prompt the user with an alert.
By the way, GPS is not affected by aircraft mode, as it's a pure receiver and doesn't make active transmissions. In that case GPS will be always active and collecting informations (if active and the phone is not in power save mode, aka relying on wifi location). I suggest you to check if the user activated aircraft mode, in order to be less annoying with your alerts (air mode is mandatory in same situations, and should be considered "legal" by your application, and maybe less critical than an user voluntary disconnection
In simple words, You cannot, but you can listen to when wifi is enabled/connected, and you can prompt a dialog stating the reason.
This way it gives the user a more concise grip on what needs to be done.
Just a suggestion
I've developed an application that streams music (via internet connection) using service and having trubles streaming content without phone going idle.
While i was developing my application each time i tried case mentioned below the music was reproducing fine.
Use case : search song, select song from results, play song, screen off -> auto play next song from result list
I'm developing using real device - Huawei Mate 20 Lite - OS v8.01 so while debugging it gotta use USB cabel.
Like i said following the use case above while hooked on USB the auto play while screen off works good. The case it doesn't work good is when the cable is not connected (only mobile data turned on).
What I've figured out is that phone when connected on USB is probably keeping the device awake and it doesn't go to idle mode while when not connected after around 5mins the device probably shuts down processes that cost energy or it shuts down connection to mobile data i'm not sure and there's where i need you guys.
Also I've tested app using HTC U Play - OS v6.0 and the streaming goes smooth without interrupts while screen off and phone wasn't touched for 10+mins.
Also I've tried to acquire wakelock inside oncreate and without releasing it just to see if it helps and it doesn't.
pm = (PowerManager) getApplicationContext().getSystemService(Context.POWER_SERVICE);
wl = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "MyWakeLock");
wl.acquire();
This problem you are facing can be due to the fact that after Andriod 6.0, all apps are getting optimized for optimizing the battery usage.
If you really think, the reason behind the application to go killed is inactivity. Then, probably, its because of battery optimization software itself.
You can enable another permission while installing the app on the device where you can update the list of unoptimized app by adding an entry for your app.
Originally, you will be able to do the manual settings by following below instruction.
. Head for the ‘Settings‘ app and then ‘Battery‘
. On the ‘three dots‘ menu, top right, you’ll find ‘Battery optimisation‘.
. Here you’ll see a list of all applications which shouldn’t be ‘optimised‘ (for which read ‘can be handled by Doze and App Standby’) – by default the list is usually very small, with almost all apps enabled for ‘optimisation’. Which is fine for general users, but if, like me, you want a few applications to live outside of the new battery optimisations, then tap on the ‘Not optimised‘ pick list and choose ‘All apps‘
. As you’d expect, every application on your phone is listed (this may be quite long) – swipe down until you find the application(s) that you particularly want to always keep running. Tap on the application name
. From the two choices, check the box for ‘Don’t optimise‘.
I have very limited knowledge of Android NDK and I want to write something on NVRAM using NDK. I want to know:
If it is possible to write on NVRAM
If yes, then how (I didn't find anything on google)
If no, then do I need to make a customized operating system or any other solution?
The main goal is to lock the phone on a particular band e.g:
Lock LTE mode and then band 1 of LTE
Please share your thoughts.
You can lock your band user Network Signal Guru. In fact once you download the tool you execute the following
Select Menu ---> Lock Bands ---> Select LTE
Choose which Bands 1,2,4,5,40 etc..
Click Ok ---> Select Menu again ---select Lock RAT
Select LTE --> select ok
The mobile radio will powercycle once or twice but then your Band and LTE preference is locked and saved.
Android app which i am developing has some modes like:
Kiosk Mode
Normal Mode
Semi-Kiosk Mode
Now my question is while my app is running in a Kiosk mode it will blocks all the other apps to open/make himself on the top. So user is unable to go to the settings screen.
I want a way to provide a Wi-Fi settings within my app so that user can do:
Search for the Wi-Fi nearby
Select and provide the password
Can see which Wi-Fi node is connected
Any help will be appreciated.
I know this is a bit old, but just in case it saves someone a little bit of research in the future this is a solution that I came up with for a similar use case.
Just use the activity that Android provides for managing wifi (without the user seeing the rest of the settings) by manually assembling an intent like so:
Intent intent = new Intent("com.android.net.wifi.SETUP_WIFI_NETWORK");
intent.setComponent(ComponentName.unflattenFromString("com.android.settings/com.android.settings.wifi.WifiSetupActivity"));
intent.addCategory("android.intent.category.DEFAULT");
startActivity(intent);