filter calls from certain carriers

[LeZero]

Ok, id like to code android app for counting calls from certain carriers. If I call to a number, i would like to be filter that call and count the time interval of conversation (hh:mm:ss), sms, mms...etc
Any idea how to filter the numbers from certain mobile carrier number? Any suggestions will be more than welcome. Google is scarce about this thing..
tnx

 

[james515]

it would be tough to do since most mobile numbers are not assigned to a specific carrier anymore. with Wireless Number Portability you can take your number from one carrier to the next. then you have all the land line carriers plus things like google voice#'s.