is it possible to get the name of the mobile phone operator from the android CallLog? E.g. in Germany phone numbers have xxxx - xxxxxxx form.
Normally the first 4 numbers of the phone number are an identifier for the mobile phone operator. But in Germany you can switch the operator, porting your mobile phone number to your new operator. So the xxxx itself is no longer a hint what operator is behind a phone number or a call.
Is it possible to get such information from the CallLog or any other log of the android phone?
No. Provider detection and routing is done at the backend - the phone just receives the phone number in the "incoming call" event.
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Some phones return null when I want to get the phone number. In other phones I get the phone number.
This happens when Settings -> About Phone -> Status -> My phone number is "Unkow". Not writed there the phone number.
Why is this happening?How can I get a phone number ?
The code:
<uses-permission android:name="android.permission.READ_PHONE_STATE"/>
And:
TelephonyManager tMgr = (TelephonyManager)getApplicationContext().getSystemService(Context.TELEPHONY_SERVICE);
String mPhoneNumber = tMgr.getLine1Number();
Your code is perfect to get phone number of Android device.It will return you number.But sometimes it gives you null because that devices Service provider has not given permission to do that.
Means It works like : Android devices Request SIM card/Service provider for card info with phone number. And In response, Some provider have returned phone number of user and some has refused to do so.
Can you clarify what specifically you're asking for? If you're saying that it happens when in your phone's settings, under About Phone->Status->My phone number, it says "Unknown", then unfortunately that's not a programming question and not a question for here. Is that the case?
You cannot get device phone number in any ways. It depends on the service provider, some may allow access and some may not since it is completely dependent on the network access privileges. But in rare case you would get the phone number once the user has configured their own mobile number with the SIM card provider. The other way to do this by fetching the number from Facebook that too the user should have registered their mobile number, whereas the earlier versions of whatsapp provides this feature, but it is not compatible with the newer ones.
Note: It works with few custom phones which provides the access.(i.e., phones synced with only particular network providers)
Could I get MCC & MNC of the other party, either on an incoming or an outgoing call?
I am aware that you can get your own information from the SIM card but I am interested for the information of my contacts.
I guess I must be able to retrieve such information during a phone call.
So two main questions:
Is it allowed from the protocol?
Are there any classes inside Android API that provide such information? (looked up inside TelephonyManager but did not find any)
Like payeli has answered: No, you cannot.
Firstly, because there is no API for accessing the other party's cellular information. Secondly, because Android doesn't actually know. You can delve into the source code of the TelephonyManager, and you'll see that it only contains information about the local telephony provider.
Furthermore, the internal Android class Connection also shows no hint of any such information. (Regardless of the information it contains, it isn't accessible from the API, not even via reflection.)
That being said, there are currently services that provide some insight into phone numbers. Here in the Netherlands, KPN provides an API for looking up caller information, including the current coverage state of the phone, whether it's roaming or not, and other details. I'm not sure if the API is public yet or not, but perhaps there's a similar service available in your region.
No, you can only retrieve the MCC and MNC of your phone, not for third party numbers to which you make or recieve calls.
Reason: Calls target a phone number, not the MCC/MNC of the sending/receiving devices. The MCC / MNC tuple is used to uniquely identify a mobile phone operator/carrier, so if user is using carrierX at present, he will have one value of MCC/MNC, and if user changes mobile carrier/operator but retains same phone number, the the value of MCC/MNC will change but phone-number will still be constant.
So the mapping between phone number of a contact and MCC/MNC of their carrier are not fixed. So:
Could I get MCC & MNC of the other party, either on an incoming or an outgoing call? NO
I have several question about MSISDNs. I understand:
MSISDN is the basically the phone number
It is not IMSI
What i need to know further are:
Is MSISDN number burnt (stored) in SIM Card? If it is yes, are all providers make sure that there is MSISDN information in SIM Card? If it is no, to be clarified, None of programming code can fetch the MSISDN number?
Some people suggest to fetch MSISDN as below code. But both the code return null if "My Phone Number" is not set in device. On the other way around, it will return the "My Phone Number" if it is set.
Thus, the question is: "My Phone Number" equals to MSISDN?
TelephonyManager.getLine1Number(); --> for Android
Phone.getDevicePhoneNumber(true); --> for Blackberry
As code above, the return String data is fetched from the device itself or from the SIM Card?
I have some insight into the matter for you.
The MSISDN can be stored on the SIM card, however most network providers (all providers in South Africa) do not store the MSISDN on the SIM card. There are several reasons for this, the most notable being:
Dynamic MSISDN allocation: Prepaid SIMs are sometime allocated an MSISDN when they are first used. This means that the network has a pool of available MSISDNs and allocate them whenever a new prepaid SIM comes online. This means that when the SIMs are shipped they do not have an MSISDN yet, which means you can't store an MSISDN prior to shipping the SIMs. Some networks 'expire' MSISDN allocations after a period of inactivity, especially when their available numbers are running low, and return these numbers to the available pool.
Mobile Number Portability: Some countries allow mobile subscribers to keep their MSISDN but change networks. This means that the MSISDN will be moved from a SIM that is for 1 network to a SIM that is for another network.
So the user often ends up with the MSISDN entry on the SIM being blank. The user can still store the MSISDN on the SIM themselves, but this also allows them to store any arbitrary number, and it is not guaranteed to be set or to even be the subscribers actual phone number.
2. Those calls you asked about fetch the number that is stored in the SIM card. If the number is not set you won't get it, and if the user has the wrong number set then you will have the incorrect details.
3. Correct, this string is fetched from the SIM itself.
The only semi-reliable way I have for detecting MSISDN is via WAP/WEB when the Mobile Operator includes the MSISDN in the headers (you can do some webview trickery to see what headers are coming through) - however you only see these if the network supports it and if the user is on Mobile Data - i.e. It won't work if the user is on WiFi.
The other mechanism I can think of (the only guaranteed mechanism I can think of) is via a USSD session, as you always get the correct MSISDN from the operator, but I haven't found a way of programatically opening a USSD session and reading the response (in Android at least). I have a USSD service whose only output is the MSISDN but unfortunately this hasn't proven usable to me yet.
Since nobody replied in the last hour since you posted your question, here is what I know (although I am not an expert in this area, just have some experience):
MSISDN is the phone number; the number people can call you on.
It cannot be "burnt" into the sim card as you can change sim card (upgrade or changing to other operator) and keep your phone number = MSISDN. I think there is a mapping table at the operators that covert from sim card ID to MSISDN and back when call/data transfer is made. The MSISDN might be stored on the card.
You should take into account that MSISDN has BIGINT type.
Therefore outputting it make type transformation in advance,
like this
I want to get phone number of android device. I use this code:
TelephonyManager tm = (TelephonyManager)this.getApplicationContext().getSystemService(Context.TELEPHONY_SERVICE);
String phoneNumber= tm.getLine1Number();
On my phone (HTC Wildfire) I can not get phone number - all I get is empty string. If I run code on emulatur, phone number is normally showed.
If I go to Settings=>About phone=>Phone identity->Phone number, phone number is "Unknown".
Where is the problem? Is something wrong with my SIM?
We had the same problem in our project. The conclusion was that it depends on the SIM card.
What happened to us:
Galaxy S with AT&T SIM card: can read phone number, Settings shows number
Same Galaxy with an European SIM card: cannot read the number and "unknown" in Settings (cell phone was perfectly functional, just couldn't read the number)
This has been reported in other forums as well.
In the end we decided to ask the user for the phone number. A bit more involved, actually: if( "SIM card present" && "cannot read the cell number") "ask user"; . Otherwise we will keep bugging the user that doesn't a SIM card in the first place.
Instead of the phone number use the SIM card serial number, which always exists and is always a valid value.
telephonyManager.getSimSerialNumber();
SIM serial number is unique within the operator at least. So combined with
telephonyManager.getNetworkOperator();
you'll have a unique identifier for a subscriber within a country.
This combined with
telephonyManager.getNetworkCountryIso();
you'll have a globally unique identifier for a subscriber.
Hope this will help.
Cheers.
SIM card stores phone number and it can be edited by you. Cant say for Android, but on WM you can easily edit your phone number, which is stored on SIM card.
Of course, it does not mean that you can change your phone number on the fly. Actually, you are free to write there any number you like, and the programs will believe, that this is your real number :)
When I've moved a SIM card into a new phone, I've sometimes found that the phone number does not show up in Settings -> About phone -> Status -> My phone number.
My data points:
AT&T Atrix putting completely new SIM in it says “Voice MSISDN Line1 null”.
T-Mobile G1 putting new SIM card into it correctly displays the phone number.
T-Mobile G2 moving SIM card from my old G1 into is says "Unknown".
Telephone number available if the SIM card is allows it get his.
In our company I found only one SIM, which is allowed get number. I'm tetsting this SIM on all android device. All ok. getLine1Number() is ok.
Now I'm looking for get phone number for other SIM. Have send sms to our sms-server or other android device(with the processing of SMS)
I use a simcard which only permits data transfer. It doesn't permit phone calls.
When I try to get phonenumber with getLine1Number(), I get empty string.
Background; I am in the process of writing an Android messaging application that needs to know the current user's phone number. This is then used to connect to other users using the application.
My application relies on looking up the user's number from Android's Settings -> About Phone -> Phone identity -> Phone number (this can at times be blank.. but that is a separate problem).
I am assuming that the above Phone number contains the user's full number. ie, my UK Android phone shows my number as: +447832xxxxxxxx, where 44 is the UK's international dialling code and 7832 is the operator.
Is it safe to assume that all Androids phones would include the international dialling code, which starts with +?
I would be indebted if any Android users could have a quick look at their Android settings and confirm whether Phone number is displayed as +international code+operator+number, i.e. US Android sets start with +1xxxxxx.
TelephonyManager.getLine1Number() is not guaranteed to be correct or even available to applications. I'd suggest a backup plan of using SECURE_ID to match to some user entered, possibly text-message verified phone number on a server somewhere. But even SECURE_ID is sometimes not a unique identifier (all DROID2 phones have the same ID), which would mean you should rely on an account system of some sort.
In my phone (Nexus One, Android 2.2, O2 UK) I don't have Settings -> About Phone -> Phone identity. In Settings -> Status -> My phone number is "Unknown". Not sure this helps you though, sorry.
On my moto droid with 2.2 I have: Settings->About Phone->Status->My phone number. FYI it is not prefixed with +international code