Develop Reference

Detect 5G NR (SA/NSA) in my Android Application

I am trying to detect 5G network. I use the telephony manager to get NETWORK_TYPE. Even if I am in 5G network coverage and my phone shows 5G, I do not get NETWORK_TYPE_NR. The NETWORK_TYPE is always 13 i.e. LTE.
The Phones Engineering service mode shows NR related data.
Is there any way to detect NR (Standalone or Non-Standalone) mode?
I also need to get the Cell Information for NR data. I use telephonyManager.getAllCellinfo(), but I never get an instance of cellinfonr.
Any help is appreciated. Thanks

I faced the same problem for a few weeks ago. In my case, I want to detect 5G network on Galaxy S20-5G but the getDataNetworkType() always return 13 NETWORK_TYPE_LTE.
Following by netmonster-core strategy, and here is the code that I extract from them to solve my problem.
public boolean isNRConnected(TelephonyManager telephonyManager) {
try {
Object obj = Class.forName(telephonyManager.getClass().getName())
.getDeclaredMethod("getServiceState", new Class[0]).invoke(telephonyManager, new Object[0]);
// try extracting from string
String serviceState = obj.toString();
boolean is5gActive = serviceState.contains("nrState=CONNECTED") ||
serviceState.contains("nsaState=5") ||
(serviceState.contains("EnDc=true") &&
serviceState.contains("5G Allocated=true"));
if (is5gActive) {
return true;
}
} catch (Exception e) {
e.printStackTrace();
}
return false;
}
Here is full detector class from netmonster-core:
(DetectorLteAdvancedNrServiceState.kt)

How to get network usage of apps on Android Q?

Background
I know that we can get the network usage (total bandwidth used of mobile&Wifi so far, from some specific time) of a specified app by using something like that (asked in the past, here) :
private final static int[] NETWORKS_TYPES = new int[]{ConnectivityManager.TYPE_WIFI, ConnectivityManager.TYPE_MOBILE};
long rxBytes=0L, txBytes=0L;
final TelephonyManager telephonyManager = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
final String subscriberId = telephonyManager.getSubscriberId();
final ApplicationInfo applicationInfo = context.getPackageManager().getApplicationInfo(packageName, 0);
final int uid = applicationInfo.uid;
for (int networkType : NETWORKS_TYPES) {
final NetworkStats networkStats = networkStatsManager.queryDetailsForUid(networkType, subscriberId, 0, System.currentTimeMillis(), uid);
final Bucket bucketOut = new Bucket();
while (true) {
networkStats.getNextBucket(bucketOut);
final long rxBytes = bucketOut.getRxBytes();
if (rxBytes >= 0)
totalRx += rxBytes;
final long txBytes = bucketOut.getTxBytes();
if (txBytes >= 0)
totalTx += txBytes;
if (!networkStats.hasNextBucket())
break;
}
}
}
Docs:
https://developer.android.com/reference/android/app/usage/NetworkStatsManager.html#queryDetailsForUid(int,%20java.lang.String,%20long,%20long,%20int)
It's also possible to get the global network usage (using TrafficStats.getUidRxBytes(applicationInfo.uid) and TrafficStats.getUidTxBytes(applicationInfo.uid) ), but that's not what this thread is all about.
The problem
It seems Android Q is planned to cause a lot of device-identity functions to stop working anymore, and getSubscriberId is one of them.
What I've tried
I tried to set the targetSdk to 29 (Q) and see what happens when I try to use this.
As expected, I got an exception that shows me that I can't do it anymore. It says :
019-06-11 02:08:01.871 13558-13558/com.android.myapplication E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.android.myapplication, PID: 13558
java.lang.SecurityException: getSubscriberId: The user 10872 does not meet the requirements to access device identifiers.
at android.os.Parcel.createException(Parcel.java:2069)
at android.os.Parcel.readException(Parcel.java:2037)
at android.os.Parcel.readException(Parcel.java:1986)
at com.android.internal.telephony.IPhoneSubInfo$Stub$Proxy.getSubscriberIdForSubscriber(IPhoneSubInfo.java:984)
at android.telephony.TelephonyManager.getSubscriberId(TelephonyManager.java:3498)
at android.telephony.TelephonyManager.getSubscriberId(TelephonyManager.java:3473)
Searching the Internet and here, I don't see this mentioned, but I have found about similar issues, of getting IMEI and other identifiers:
I am getting IMEI null in Android Q?
https://issuetracker.google.com/issues/130202003
https://issuetracker.google.com/issues/129583175
https://developer.android.com/preview/privacy/data-identifiers#device-ids
So for now I just made a bug report about it here (including a sample project) :
https://issuetracker.google.com/issues/134919382
The question
Is it possible to get network usage of a specified app on Android Q (when targeting to it) ? Maybe without subscriberId?
If so, how?
If not, is it possible by having root, or via adb?
EDIT:
OK, I don't know how to officially use this, but at least for root access it is possible to get the subscriberId, using this solution, found from here.
Meaning something like that:
#SuppressLint("MissingPermission", "HardwareIds")
fun getSubscriberId(telephonyManager: TelephonyManager): String? {
try {
return telephonyManager.subscriberId
} catch (e: Exception) {
}
val commandResult = Root.runCommands("service call iphonesubinfo 1 | grep -o \"[0-9a-f]\\{8\\} \" | tail -n+3 | while read a; do echo -n \"\\u\${a:4:4}\\u\${a:0:4}\"; done")
val subscriberId = commandResult?.getOrNull(0)
return if (subscriberId.isNullOrBlank()) null else subscriberId
}
It's not an official solution, of course, but it's better than nothing...
EDIT: the part of getting it via root is wrong. It doesn't help in any way.

You can provide null value for API 29 and above. It returns values ​​for both WIFI and Mobile Data.
Documentation:
If applicable, the subscriber id of the network interface.
Starting with API level 29, the subscriberId is guarded by additional restrictions. Calling apps that do not meet the new requirements to access the subscriberId can provide a null value when querying for the mobile network type to receive usage for all mobile networks. For additional details see TelephonyManager.getSubscriberId().
Permissions (Don't forget to get permission from the user):
<uses-permission android:name="android.permission.READ_PHONE_STATE"
android:maxSdkVersion="28"/>
<uses-permission android:name="android.permission.PACKAGE_USAGE_STATS"
tools:ignore="ProtectedPermissions" />
Example code:
//network stats
NetworkStatsManager networkStatsManager = (NetworkStatsManager) activity.getSystemService(Context.NETWORK_STATS_SERVICE);
int[] networkTypes = new int[]{NetworkCapabilities.TRANSPORT_CELLULAR, NetworkCapabilities.TRANSPORT_WIFI};
String subscriberId;
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.Q) {
TelephonyManager telephonyManager = (TelephonyManager) activity.getSystemService(Context.TELEPHONY_SERVICE);
try {
subscriberId = telephonyManager.getSubscriberId(); //MissingPermission
} catch (SecurityException e) {
subscriberId = null;
}
} else {
subscriberId = null;
}
Get NetworkStats for an app:
long receivedBytes = 0;
long transmittedBytes = 0;
for (int networkType : networkTypes) {
NetworkStats networkStats;
try {
networkStats = networkStatsManager
.queryDetailsForUid(networkType,
subscriberId,
0,
System.currentTimeMillis(),
appUid);
} catch (SecurityException e) {
networkStats = null;
}
if(networkStats != null) {
NetworkStats.Bucket bucketOut = new NetworkStats.Bucket();
while (networkStats.hasNextBucket()) {
networkStats.getNextBucket(bucketOut);
long rxBytes = bucketOut.getRxBytes();
long txBytes = bucketOut.getTxBytes();
if (rxBytes >= 0) {
receivedBytes += rxBytes;
}
if (txBytes >= 0) {
transmittedBytes += txBytes;
}
}
networkStats.close();
}
}

The google team in the comment of the thread that you have mentioned has said:
" Status: Won't Fix (Intended Behavior)
This is Working As Intended. IMEI is a personal identifier and this is not given out to apps as a matter of policy. There is no workaround.". So I guess the methods in the class NetworkStatsManager which require IMSI (which is also considered as a personal identifier) to work (like the queryDetailsForUid(int, String, long, long, int)) are now broken in Android Q. You may use those methods to get Wifi usage details of the apps (by passing empty string for subscriberId) but for getting Mobile usage details, you now have to rely on the good old TrafficStats class until the issue gets noticed and fixed.

We are using NetworkStatsManager.querySummaryForDevice(). Due to a serendipitous bug, we were passing null as the subscriberId for MOBILE in Q. It appears to be working on our devices. I'm not sure if this is a bug or a feature, but the values match our expected cellular usage.
All the said, we could just use TrafficStats for this use case, but it's erratic before Pie.

AudioRecord.getRoutedDevice() returns null on most of the Android device

I'm trying to get current route for my input audio by calling AudioRecord.getRoutedDevice(); during recording, but on most Android API23+ devices it returns null (out of 300k various Android devices, only 10% return meaningful info). Even on the same device model (Samsung Galaxy S5, 6.0.1), 70% of devices return null, and 30% return correct info.
I tried to debug this using reflection, and replicated some of the SDK code to step through it - and I can see that inside of AudioRecord.getRoutedDevice(); I do get reasonable response both from native_getRoutedDeviceId() and getAudioManager().getDevices(), but then ids don't match:
#TargetApi(23)
private AudioDeviceInfo getRoutedDevice() {
Object r = (Object)(0);
try {
Method method = _record.getClass().getDeclaredMethod("native_getRoutedDeviceId");
method.setAccessible(true);
r = method.invoke(_record);
} catch (Exception e) {
e.printStackTrace();
}
int deviceId = (int)r; //native_getRoutedDeviceId();
if (deviceId == 0)
return null;
AudioDeviceInfo[] devices =
getAudioManager().getDevices(AudioManager.GET_DEVICES_INPUTS);
for (int i = 0; i < devices.length; i++)
if (devices[i].getId() == deviceId)
return devices[i];
return null;
}
What could I be possibly doing wrong, and is there any other API that I could be using?
Old API like AudioManager.isWiredHeadsetOn() for example doesn't guarantee that audio IO is going through the headset at the moment.

From the docs
Note: The query is only valid if the AudioRecord is currently
recording. If it is not, getRoutedDevice() will return null.

How to find out whether android device has cellular radio module?

How can I find out for sure that device really has gsm, cdma or other cellular network equipment (not just WiFi)?
I don't want to check current connected network state, because device can be offline in the moment.
And I don't want to check device id via ((TelephonyManager) act.getSystemService(Context.TELEPHONY_SERVICE)).getDeviceId() because some devices would just give you polymorphic or dummy device ID.
Actualy, I need to check cell equipment exactly for skipping TelephonyManager.getDeviceId and performing Settings.Secure.ANDROID_ID check on those devices that don't have cellular radio. I have at least one tablet (Storage Options Scroll Excel 7") which returns different IMEIs every time you ask it, although it should return null as it has no cell radio (the same situation here: Android: getDeviceId() returns an IMEI, adb shell dumpsys iphonesubinfo returns Device ID=NULL). But I need to have reliable device id that is the same every time I ask.
I'd be glad to hear your thoughts!

If you're publishing in the store, and you want to limit your application only being visible to actual phones, you could add a <uses-feature> into your manifest that asks for android.hardware.telephony. Check out if that works for you from the documentation.

Just in case somebody needs complete solution for this:
Reflection is used because some things may not exist on some firmware versions.
MainContext - main activity context.
static public int getSDKVersion()
{
Class<?> build_versionClass = null;
try
{
build_versionClass = android.os.Build.VERSION.class;
}
catch (Exception e)
{
}
int retval = -1;
try
{
retval = (Integer) build_versionClass.getField("SDK_INT").get(build_versionClass);
}
catch (Exception e)
{
}
if (retval == -1)
retval = 3; //default 1.5
return retval;
}
static public boolean hasTelephony()
{
TelephonyManager tm = (TelephonyManager) Hub.MainContext.getSystemService(Context.TELEPHONY_SERVICE);
if (tm == null)
return false;
//devices below are phones only
if (Utils.getSDKVersion() < 5)
return true;
PackageManager pm = MainContext.getPackageManager();
if (pm == null)
return false;
boolean retval = false;
try
{
Class<?> [] parameters = new Class[1];
parameters[0] = String.class;
Method method = pm.getClass().getMethod("hasSystemFeature", parameters);
Object [] parm = new Object[1];
parm[0] = "android.hardware.telephony";
Object retValue = method.invoke(pm, parm);
if (retValue instanceof Boolean)
retval = ((Boolean) retValue).booleanValue();
else
retval = false;
}
catch (Exception e)
{
retval = false;
}
return retval;
}

Android app to get system phone number

I'm Trying the following code to get System phone number
TelephonyManager tMgr =(TelephonyManager)mAppContext.getSystemService(Context.TELEPHONY_SERVICE);
mPhoneNumber = tMgr.getLine1Number();
But it is not working.
In my phone, i use
Settings->About Phone-->Status-Phone Number
is there a simple app i can use ? , I m writing from Turkey. does sim card make a difference ?

Not all telecom carriers store the phone number on the SIM card. The approach you are using only works if the SIM card in the device has the mobile number stored on it.
If you cannot see your phone number in the mobile settings, then it means that it isn't stored on the SIM card. You will have to manually ask the user to enter it into your app if you absolutely need it. There is no other way.

You can try something like this. It works perfectly.
public String getPhoneNumber(Context context) {
TelephonyManager mTelephonyMgr;
mTelephonyMgr = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
String num = mTelephonyMgr.getLine1Number();
return fillPhoneNumber(num);
}
private String fillPhoneNumber(String num) {
try{
if (num != null && num.length() > 0) {
if (num.length() >= 9) {
num = num.replaceAll("\\D", "");
if (num.substring(0, 1).equals("8")) {
num = "+3" + num;
} else if (num.substring(0, 1).equals("0")) {
num = "+38" + num;
} else if (num.substring(0, 1).equals("3")) {
num = "+" + num;
}
}
return num;
}
}catch (Exception e) {
e.printStackTrace();
}
return null;
}
Note: Not all phones return a phone number.

There is no deterministic way to find the MSISDN. The above approach only works if SIM has stored the MSISDN. Other work around is to retrieve the number from facebook. It also may or may not work.
The only sure shot way is to create account with some SMS gateway provider like http://trumpia.com, then send SMS to the toll free number, and then call the API to retrieve the MSISDN.