I am developing an application that I need to find user phone number.
I founded Telephony Manager but this class does not guarantee that the phone number always returns.so i want to know is there any solution(probably not a straight solution that can i give users phone number because the number does not coded on sim card) in android?
Only few service providers provide phone number via getLine1Number() method. Instead you can get a unique number for each sim using getSimSerialNumber() method.
Ask the user to enter phone number, you can store his simnumber using getSimSerialNumber();
Then authenticate depending on the sim number, this should solve your problem
You don't have much possibilities here you can use either :
TelephonyManager tMgr =(TelephonyManager)mAppContext.getSystemService(Context.TELEPHONY_SERVICE);
String mPhoneNumber = tMgr.getLine1Number();
Which as you said is not guaranteed to always return a number. Or you can ask user to enter the number manually. I think there's no other option.
Related
I used this code for fetching the number, But it gave me null
TelephonyManager tMgr = (TelephonyManager)mAppContext.getSystemService(Context.TELEPHONY_SERVICE);
String mPhoneNumber = tMgr.getLine1Number();
It may not always return mobile number.
Let me explain how this actually works: When you buy a new SIM card for a new number, the provider had already (though not always) put a mobile number in the SIM (SIM Cards do have a little memory). Now TelephonyManager API tries to read that number. If it is available then it returns the number.
Now, you can get a SIM without a mobile number associated with it. Example - new SIM for porting (where you use previous number in new SIM Card). Those SIMs don't have any number stored on them, and hence TelephonyManager returns null.
Now, even if TelephonyManager returns a number, you should not trust it to be right. Because many devices provide option to edit that number.
To use getLine1Number() you need either READ_PHONE_STATE OR READ_SMS permission. You may be missing that.
And remember that it returns null if phone number string is unavailable.
I tried getLine1number(), for some device it gets the number. but for some, it returns empty string("").
As far as I tested, when in the device's Settings > Status > My Phone number is not empty, I get the number otherwise I am not able to get the Phone number.
Is there any other way to get the Phone number other than the above method?
As per my knowledge their is no any way to find a telephone number other than .getLine1Number() method.
Provide you some options that you try:-
A) If number return null means, your phone number not register in your mobile.For that you can use the sim card serial number.It is unique number.
TelephonyManager telemamanger = (TelephonyManager)getSystemService(Context.TELEPHONY_SERVICE);
String getSimSerialNumber = telemamanger.getSimSerialNumber();
B) The method you are using is the only one part of the SDK to do this,
and only works on devices where the number is stored on the SIM card,
which only some carriers do. For all other carriers,
you will have to ask the user to enter the phone number manually,
as the number is simply not stored anywhere on the device from where you can retrieve it.
Hope it will helps you.
I need phone numbers while developing my application. So, I used TelephonyManager as seen below:
TelephonyManager tmgr =(TelephonyManager)getApplicationContext().getSystemService(getApplicationContext().TELEPHONY_SERVICE);
Log.d("Tag", tmgr.getLine1Number());
But when I tried application in different devices, somehow getLine1Number() not working. I mean returns NULL.
Permission is okay. Finally, does getLine1Number() depend on other requirements? Is it possible to learn phone number on every device.
Thanks for advices.
it is not possible to get phone number on every device because this depends on how sim card is made. This is a sim card limitation.
The following code does not give me the phone number of the device ,how can i get the phone number
TelephonyManager tm = (TelephonyManager)getSystemService(TELEPHONY_SERVICE);
String number = tm.getLine1Number();
Toast.makeText(getApplicationContext(),"Telephone number: "+ number,
Toast.LENGTH_SHORT).show();
ALso i have tried the following..but the number doest show up
Programmatically obtain the phone number of the Android phone
How to get the mobile number of current sim card in real device?
The only method available from Android API as all the comments suggest is getLine1Number(). However I have never been able to obtain it since your operator must provide you with a SIM that supports letting phone read internal phone number. That seems not very common, so I am afraid that you could be left without means of knowing it.
That's why some programs that use your phone number to identify you (i.e. Whatsapp) do ask user about his/her phone number, because there is no sure way to getting it programatically.
the code provided:
TelephonyManager tMgr =(TelephonyManager)mAppContext.getSystemService(Context.TELEPHONY_SERVICE);
mPhoneNumber = tMgr.getLine1Number();
should work fine, however, it will not if you forgot the permission "READ_PHONE_STATE".
Hope this works now :)
Try this:
private String getMyPhoneNumber(){
TelephonyManager mTelephonyMgr;
mTelephonyMgr = (TelephonyManager)
getSystemService(Context.TELEPHONY_SERVICE);
return mTelephonyMgr.getLine1Number();
}
Hope it help you
[In case if anyone still stumbles here looking for this still existing age-old problem]
AFAIK, TelephonyManager.getLine1Number() is not reliable due to various constraints from operators.
There are some java reflection based hacks but varies from device to device thus making those hacks sort of useless [at least in terms of supported models]
But there is a legitimate lawful logic to find the number, if you really need so. Query all the SMS by sms provider and get the "To" number.
Extra benefits of this trick: 1. you can get all the line numbers if there is multi sim in the device.
Cons: 1. you will need SMS_READ permission [sorry for that]
2. You will get all the sim numbers ever used in the device. this problem can be minimised with some constraint logic e.g. time frame (sms received or sent only today) etc. It would be interesting to hear from others about how to improve this case.
I am trying to develop an application that needs the phone number of SIM Card every time a new SIM Card is inserted in the phone....Then i will use that phone number to get the user subscribed to an online server.I have read many forums and found something like this
TelephonyManager tMgr =(TelephonyManager)mAppContext.getSystemService(Context.TELEPHONY_SERVICE);
mPhoneNumber = tMgr.getLine1Number();
but everyone said that this is not an efficient method.If this is not an efficient method then which is the efficient method and also I cannot use any other property like SIM id or Subscriber ID etc.I only need the PHONE NUMBER. Any help would be appreciated.
As far as I know, this method would not always return right SIM number; it depends on the SIM card itself.
If you really want to get the SIM number, you can send a SMS to a specific phone, so you will get it.
TelephonyManager is not the right Solution,Because in some cases the
number is not stored in the SIM, Due to my suggestion,You should use
Shared Preference to store user's Phone number first time the
application is open, and after that the number will used whenever you
need in application.
Thank you.