Develop Reference

Unable to set device owner through programmatically

I tried to execute the following code to set my app as a device owner. I can't use ADB because I have more than 10K android-9 non rooted devices. So, Need to do this programmatically.
String name = AdminReceiver.class.getName();
if (name.startsWith(BuildConfig.APPLICATION_ID)) {
name = name.substring(BuildConfig.APPLICATION_ID.length());
}
final String command = "dpm set-device-owner " + BuildConfig.APPLICATION_ID + '/' + name;
Process process = Runtime.getRuntime().exec(command);
Log.d(TAG,"RETURN VALUE:"process.waitFor();
process.waitFor() always return 1.

Need to do this programmatically
Fortunately, that is not possible, for blindingly obvious security reasons.

Use QR Enrollment instead!
You can generate a QR Code which contains a URL for your Device Owner package. Then you can scan this code in the factory setup process of the device.
See the documentation here
The Data in the QR Code would look something like this:
{
"android.app.extra.PROVISIONING_DEVICE_ADMIN_COMPONENT_NAME": "com.google.android.apps.work.clouddpc/.receivers.CloudDeviceAdminReceiver",
"android.app.extra.PROVISIONING_DEVICE_ADMIN_SIGNATURE_CHECKSUM": "I5YvS0O5hXY46mb01BlRjq4oJJGs2kuUcHvVkAPEXlg",
"android.app.extra.PROVISIONING_DEVICE_ADMIN_PACKAGE_DOWNLOAD_LOCATION": "https://play.google.com/managed/downloadManagingApp?identifier=setup"
}
Simply replace the information with your own device owner package information. After scanning, the device will download, install, and set up the device owner.
If you become an EMM Partner with Google, you can even do Zero-Touch-Enrollment by getting preconfigured android devices from the manufacturers. But Google stopped approving requests for custom device policy managers and you must use the Android Management API now.
Footnotes
Instructions on how to scan the QR Code
Device Admin Developer reference for streamlining this into the device admin app

How to get a unique identifier for iphone and android

I need to get a unique number for every device for my cordova app (iOS/Android) The ID must be the same when user closes the app or install a new version
I cannot used the UUID from the "cordova device plugin" because the UUID changes when the user upgrade to a new version so it wouldn't work for me.
I have tried generating a unique number and storing it on the phone. However, I run into an issue where the information is not persisted.
This happens when the user install the app and then remove the app from the background. Otherwise , the data is saved
any ideas?

You can use the serial number of the phone as a unique identifier

One possibility is to use cordova-plugin-cloud-settings which allows you to persist user settings in cloud storage across devices and installs.
Install it:
cordova plugin add cordova-plugin-cloud-settings
Use it to store a GUID:
var settings = {
GUID: 12345678
}
cordova.plugin.cloudsettings.save(settings);
The nice thing about this solution is it doesn't need any special user permissions.
If you really want a unique device ID (vs unique user ID) then you could use the UniqueDeviceID plugin.
However, note that on Android this uses the SIM ID to obtain an identifier so requires READ_PHONE_STATE permission which displays a user permissions prompt "Allow to make and manage phone calls", which is not great for the trust of your users.

Use the MAC address:
cordova plugin add cordova-plugin-ip-mac-address
var params = {};
addressimpl.request("getMACAddress", JSON.stringify(params), function(message) {
alert("mac address "+message);
}, function() {
alert("failed on get mac address");
});
From here

Get Apple/Google ID for replacing email address in user account - feasability and sense?

I'm currently planning on creating an app. Unfortunately the need for usercreation is there. I know users don't like goind through a registration process with opt in by email activation link click.
So I thought maybe using the apple/google id as a replacement for email address would be cool since the verification step by email can be dropped. In addition when the user changes his or her mail address that's no problem since his or her id doesn't change in this case.
I'm not really into this particular topic so I have some questions, any help is highly appreciated:
Is there any numeric/alphanumeric id anyway or is the google/apple id (i.e. the "username") the email address itself?
Is this possible in Android and Apple SDK (and Cordova in addition since I use this one)?
Is this a good idea in general or am I missing something?
Thanks in advance!

You could use the below DeviceIDs solutions as primary key for your users registrations. Look:
1 - Android
1.1 - Android Phones (With SIM chip) - For Android I use the Cordova SIM plugin. It generates uniqueIDs for devices based on SIM chip informations. So, you can manipulate your data based on the plugins return;
Link: https://github.com/pbakondy/cordova-plugin-sim
1.2 - Adroid Tablets - The plugin above is fantastic, but it does not work for devices that does not have any SIM chip. In this case, I use the following code:
if(mContext == null){
mContext = this.cordova.getActivity();
if(dialog == null){
dialog = new ProgressDialog(mContext);
}
}
String tabletID = Secure.getString(mContext.getContentResolver(), Secure.ANDROID_ID);
Conclusion: If you are developing only for phones (App projected for Mobile Phone) you should use the plugin. If your App targets Tablets or devices without SIM card, than you can take a look at the other solution. The IDs generated are "Devices ID", unique for each device.
2 - iOS
For iOS, I use the following code to generate an unique ID for each device:
NSString *uniqueIdentifier = [[[UIDevice currentDevice] identifierForVendor] UUIDString];
The only problem: When user uninstalls all Apps of your iTunes vendor ID from the device and installs any of them again, the ID will be changed. Other easy ways to get Unique ID for iOS is deprecated since version 7.0 of the system.
See more here: Device Id from an iphone app

Unique Identifier for Mobile Devices using Cordova and AngularJS

please don't make my post like as duplicate why because am totally confused with those post when i google it.
but i need your valuable statements and real time experience on How to get UNIQUE IDENTIFIER for iOS,Android and Windows Mobiles
i have a scenario that when user login with UserName and Password i send details to server at same time i need to send Device UUID. By using device UUID and User Credentials am going to Restrict second user login when first user is already logged in(Active). but am confused with getting iOS Device UUID but wheen i seen in many post iOS is killing apps in App store when app is Accessing any UUID values.
please suggest me better way to complete mytask.
Link-1
Link-2
sorry for my bad english....!!!

You can use the Unique Device ID plugin.
Install it:
cordova plugin add cordova-plugin-uniquedeviceid
And use it:
window.plugins.uniqueDeviceID.get(function(uuid){
console.log("Unique ID": +uuid);
}, function(error){
console.error(error);
});
This will give you a unique ID per device that persists between installs.
Note that on Android 6 it requires telephony run-time permission to access SIM ID. Also you may need to fork it and update it to get the Windows Phone 8 code working on Windows 10 Mobile.

in the case of angular
you gotta install ngx-device-detector via npm then import it on your module and in the import section add DeviceDetectorModule.forRoot().then in the component you're gonna use import it and add private deviceService: DeviceDetectorService this in the constructor it will generate u a method and add it on the constructor this.epicFunction(), if it doesnt paste this
epicFunction() {
console.log('hello `Home` component');
this.deviceId = this.deviceService.getDeviceInfo();
const isMobile = this.deviceService.isMobile();
const isTablet = this.deviceService.isTablet();
const isDesktopDevice = this.deviceService.isDesktop();
console.log(this.deviceId);
console.log(isMobile); // returns if the device is a mobile device (android / iPhone / windows-phone etc)
console.log(isTablet); // returns if the device us a tablet (iPad etc)
console.log(isDesktopDevice); // returns if the app is running on a Desktop browser.
}
note: the "this.deviceId" is a variable i created in the start of the class
in the case of android just import the security and add the permission on the manifest file

whats alternative to UDID?

I am developing a android application for a exploratory project using client server architecture. I thought of using UDID but now its replaced by new "Advertising ID", but in my application, i need to store data about user on server with some unique ID per device.
so what should i use as alternative to UDID?
i checked open UDID but that is also outdated now.
Using "advertising ID" imposes problem of consistency when user clears/resets his advertising ID.
Request the community to help me out.

There is also identifierForVendor see more in apple docs

I don't have much idea about Android :
But Check these :
GeneratingDeviceSpecificSerialNo && HEre
In IOS :
-identifierForVendor
ID that is identical between apps from the same developer.
Erased with removal of the last app for that Team ID.
Backed up.
For more Info Here

You can register the device with the Google Cloud Messaging platform.
When you register the device correctly this gives you back a register id that´s unique for every device.
http://developer.android.com/google/gcm/client.html
UPDATE
You can also, if you haven't tried it out yet, to user the telephony manager to get the device identifier.
TelephonyManager tManager = (TelephonyManager)getSystemService(Context.TELEPHONY_SERVICE);
String uuid = tManager.getDeviceId();
On iOS you can try this
NSString *UUID = [[NSUUID UUID] UUIDString];
This will give you a unique id per app.