We are using the Serial number and IMEI in an application and we have observed that there are many Pixel, Samsung and Motorola devices where either the serial number or IMEI has been changed.
What could be reason ?
Due to OS update ?
Access this data in background ?
Manufacturer defect
Fetching these details during OS update process ?
Could be possible some time, but in next re-try will get correct one ?
Note: We have observed this only in Android OS Version 7,8,9. We are using
For IMEI:
TelephonyManager telephonyManager = (TelephonyManager) mAppContext.getSystemService(Context.TELEPHONY_SERVICE);
imei= telephonyManager.getDeviceId();
For serial number:
Build.SERIAL
Related
I am using a dual Sim phone And sometimes I get different IMEI numbers using the following code:
TelephonyManager manager = (TelephonyManager)
MyApplication.getInstance().getSystemService(Context.TELEPHONY_SERVICE);
String imeiNumber = manager.getDeviceId();
How to resolve this.
As per this question, device manufacturers modify Android to support dual SIMs. However, you can use reflection to get the details of both SIMs.
I used the below code to get IMEI number for Google Nexus 7 tab.
I couldn't got. How can i get IMEI number for Google Nexus 7?
TelephonyManager telephonyManager = (TelephonyManager) context
.getSystemService(Context.TELEPHONY_SERVICE);
return telephonyManager.getDeviceId();
If I am not wrong google nexus 7 doesn't have any sim. SO if there is no sim you cannot get the IMEI number of the device as the IMEI is the network dependant on gsm networks. So if the device is wifi only you cannot identify the device by IMEI. You can use MAC address instead.
Remember, you need to add the following permission to your manifest in order to call getDeviceId();
<uses-permission android:name="android.permission.READ_PHONE_STATE" />
From what I can tell IMEI numbers are required for, but not limited to, devices with GSM. So technically each sim slot should have a IMEI number.
But even some devices with GSM do not have an IMEI number. These devices could be illegal, There are also rumors that special agencies of governments around the world use IMEI-less devices to avoid being traced by counter-intelligence.
IMEI numbers are verified with the Luhn formula just like credit card numbers.
The number consists of 3 parts,
Type Allocation Code: Indicates the modal of the device. (8 digits)
Serial number: Uniquely identifying a unit of this device. (6 digits)
Check Digit: Used to verify the IMEI number. (1 digit)
On many devices the IMEI number can be retrieved by entering *#06#. The IMEI number of a GSM device can be retrieved by sending the command AT+CGSN through data cable.
I have implemented an application for get the SIM cards mobile numbers from my Google Ebony QWERTY touchscreen.In this device i have two SIM cards.I have used TelephonyManager for get mobile number from device as follows
TelephonyManager tMgr = (TelephonyManager) arTnewActivity.getSystemService(Context.TELEPHONY_SERVICE);
String getSimSerialNumber = tMgr.getLine1Number();
Log.v("Device mobile numbers",getSimSerialNumber);
From the above code it will return a single mobile number but If i run in case of Ebony QWERTY dual sim phone then can i get two sim card serial numbers?
please any body help me..
From what I understand the default SDK does not have support to handle dual sim. From this thread it sounds like you have to ask the manufacturer if they have a special SDK that could provide this.
If it's Google they might have some additional SDK stuffed away somewhere? :-)
In my application i have to get unique number of device for that i am using TelephonyManager.
I am able to get imei or device id in android phones but Is is possible for android tablet (Xoom) to get unique number ?
I am using this code to get imei number but i am not able to get in tablet, enter code here
TelephonyManager telephonyManager1 = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);
imei = telephonyManager1.getDeviceId();
I think IMEIs on 3G tablets only. Try to use,
ANDROID_ID
More specifically, Settings.Secure.ANDROID_ID. This is a 64-bit quantity that is generated and stored when the device first boots. It is reset when the device is wiped.
ANDROID_ID seems a good choice for a unique device identifier. There are downsides: First, it is not 100% reliable on releases of Android prior to 2.2 (“Froyo”). Also, there has been at least one widely-observed bug in a popular handset from a major manufacturer, where every instance has the same ANDROID_ID.
Look at Here
I want to retreive mobile number of device programatically. My code is:-
TelephonyManager telephonyManager = (TelephonyManager)this.getSystemService(Context.TELEPHONY_SERVICE);
String strMobileNumber = telephonyManager.getLine1Number();
and I have set READ_PHONE_STATE permission in AndroidManifest.xml file. This is working on emulator but on actual device with eclair version, it is returning empty string. Is there any other way to get mobile no?
There is no reliable way to "retreive mobile number of device programatically", AFAIK. getLine1Number() reports the number supplied by the SIM card for GSM phones, and the mobile number does not need to be on the SIM card.