You can do this relatively easily by reading this information in your application programmatically, and then send it to you via SMS, email, or simply upload it to the server.
However, I do not think that users will be very lucky that you do this. At least you should let them know.
For identifier you can use this:
http://developer.android.com/reference/android/telephony/TelephonyManager.html#getDeviceId%28%29
IP-, :
public String getLocalIpAddress() {
try {
for (Enumeration<NetworkInterface> en = NetworkInterface.getNetworkInterfaces(); en.hasMoreElements();) {
NetworkInterface intf = en.nextElement();
for (Enumeration<InetAddress> enumIpAddr = intf.getInetAddresses(); enumIpAddr.hasMoreElements();) {
InetAddress inetAddress = enumIpAddr.nextElement();
if (!inetAddress.isLoopbackAddress()) {
return inetAddress.getHostAddress().toString();
}
}
}
} catch (SocketException ex) {
Log.e(LOG_TAG, ex.toString());
}
return null;
}
( , Wi-Fi ), :
ConnectivityManager conMan = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
//mobile
State mobile = conMan.getNetworkInfo(0).getState();
//wifi
State wifi = conMan.getNetworkInfo(1).getState();
:
if (mobile == NetworkInfo.State.CONNECTED || mobile == NetworkInfo.State.CONNECTING) {
//mobile
} else if (wifi == NetworkInfo.State.CONNECTED || wifi == NetworkInfo.State.CONNECTING) {
//wifi
}