Simply obtaining the Mobile Phone Number of the User

sauly · Joined: 27 Feb 2008 Posts: 1

Hello all,

I have written an application used by a large number of remote sales
staff. When they sync their daily data, I want to know what phone
number (SIM) they have in their smartphone. I have already used the
TAPI to find the IMEI of the device.

There seems to be quite a lot of information about how to find the
phone number of the caller when a call comes in, but I'm just trying
to find the phone number of the device itself. In other words, what
you see in Start Menu : Settings : Personal (tab) : Phone : "Phone
Number". Or, to put it a third way, if it was my mobile phone, what my
own mobile phone number was.

The application is written for an XDA II device, PocketPC version 4.2.
In Visual Basic, compact framework.

Any help appreciated! Thanks a lot in advance, as this is driving me
nuts.

Regards,
Saul

Archived from group: microsoft>public>dotnet>framework>compactframework

Bjorn Brox · Joined: 13 Feb 2008 Posts: 1

sauly skrev:
> Hello all,
>
> I have written an application used by a large number of remote sales
> staff. When they sync their daily data, I want to know what phone
> number (SIM) they have in their smartphone. I have already used the
> TAPI to find the IMEI of the device.
>
> There seems to be quite a lot of information about how to find the
> phone number of the caller when a call comes in, but I'm just trying
> to find the phone number of the device itself. In other words, what
> you see in Start Menu : Settings : Personal (tab) : Phone : "Phone
> Number". Or, to put it a third way, if it was my mobile phone, what my
> own mobile phone number was.
>
> The application is written for an XDA II device, PocketPC version 4.2.
> In Visual Basic, compact framework.
>
> Any help appreciated! Thanks a lot in advance, as this is driving me
> nuts.
>
To get the telephone number as written in your "setting, personal,
Phone" is easy, but you don't have any guarantee that it is the real
phone number since thus user can type anything in that field.

Your only real ID you can trust for the phone is the IMEI.

C#
String phone_number = SystemState.OwnerPhoneNumber.

or
String phone_number =
SystemState.GetValue(SystemProperty.OwnerPhoneNumber).ToString();

--
Bjorn Brox

saulysw · Joined: 27 Feb 2008 Posts: 2

Bjorn,

Thank you very much for your reply.

Sadly, it doesn't work for me as I am using Windows Mobile 2003, and
the SystemState class is only in Windows Mobile 6. It is exactly what
I am looking for though - something as simple as this....

Regards,
Saul

Christian Resma Helle · Joined: 08 Aug 2007 Posts: 50

There was an old article on PocketPCDN on how to do this in native code:
http://www.pocketpcdn.com/articles/ownerinformation.html

Here's the managed version of it:

-----------------------------------------------------------------------------------
string owner_phone;

RegistryKey key = Registry.CurrentUser.OpenSubKey(@"\ControlPanel\Owner");
if (key != null) {
byte[] value = key.GetValue("Owner", null) as byte[];
if (value != null) {
owner_phone = Encoding.Unicode.GetString(value, 0x204, 50);
int index = owner_phone.IndexOf('\0');
if (index != -1) {
owner_phone = owner_phone.Substring(0, index);
}
}
key.Close();
}

MessageBox.Show(owner_phone, "Owner Phone");
-----------------------------------------------------------------------------------

--
Regards,
Christian Resma Helle
http://christian-helle.blogspot.com

wrote in message @s12g2000prg.googlegroups.com...
> Bjorn,
>
> Thank you very much for your reply.
>
> Sadly, it doesn't work for me as I am using Windows Mobile 2003, and
> the SystemState class is only in Windows Mobile 6. It is exactly what
> I am looking for though - something as simple as this....
>
> Regards,
> Saul

saulysw · Joined: 27 Feb 2008 Posts: 2

Christian,

Thank you for your suggestion. You are both ledgends in my books for
doing this!

Unfortunately, your solution is also not really that good for me,
although I can use your code. The issue is that the Owner section is
user-configurable, and I know they have not put that info in the
"Phone number" field, and even if they have, I can't trust it. People
swap SIM cards on me. What I really want is to be able to query the
SIM card and find out what phone number it really has. The machine
*does* know what it's own number is, without user input, as it's in
the Start Menu : Settings : Personal (tab) : Phone : "Phone Number"
field. This is not the same as the Owner information area, and it is
not changable by the user (ie its a label field, not input textbox).

I really appreciate the time/effort you guys have given for this, but
I am still looking for a solution.

Regards,
Saul

user · Joined: 08 Aug 2007 Posts: 286

If you want the actual number, it's available through TAPI. TAPI, however,
is far from fun or easy to use in native code and it's much worse in managed
code. OpenNETCF has a Telephony library that wraps TAPI for managed code,
but it's not free. There are some reasonable online resources and
documentation for TAPI and if you've got time and a bit of P/Invoke skill,
it can be resolved.

--

Chris Tacke, eMVP
Join the Embedded Developer Community
http://community.opennetcf.com

wrote in message @41g2000hsc.googlegroups.com...
> Christian,
>
> Thank you for your suggestion. You are both ledgends in my books for
> doing this!
>
> Unfortunately, your solution is also not really that good for me,
> although I can use your code. The issue is that the Owner section is
> user-configurable, and I know they have not put that info in the
> "Phone number" field, and even if they have, I can't trust it. People
> swap SIM cards on me. What I really want is to be able to query the
> SIM card and find out what phone number it really has. The machine
> *does* know what it's own number is, without user input, as it's in
> the Start Menu : Settings : Personal (tab) : Phone : "Phone Number"
> field. This is not the same as the Owner information area, and it is
> not changable by the user (ie its a label field, not input textbox).
>
> I really appreciate the time/effort you guys have given for this, but
> I am still looking for a solution.
>
> Regards,
> Saul
>

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