How to retrive cellular network information from XCode, iPhone?

Question

Is there any APIs available in which can provide me with the following details:

1. Signal Quality
2. Country Code
3. Network Code
4. Area Code
5. Cell ID
6. Base Station ID
7. GPRS Cell ID
8. GPRS Base Station ID
9. Signal Strength;
10. Max Signal Strength

But what I need if it is not available to retrive Signal Strength in dbm

Note: I can get this information manually by dialing 3001#12345# as shown in the following screen shot from my iPhone (Signal Strength showed in the upper left corner in dbm):

https://picasaweb.google.com/lh/photo/Qf6MBY2jtfpWImTyTHk4Gg?feat=directlink

Answer 1

Apple has not officially provided any API to calculate the signal strength. But you can refer to official Core Telephony framework ( CTCarrier Class ) to get some of the details such as Country Code,Network Code etc.