If you are a professional, root your test device. If you are a casual user, the non-root version is sufficient for identifying fakes.
With the installation complete, you can now launch GSM-One Info 7.0 and start exploring the wealth of information it provides about your device. gsm-one info 7.0 apk free download
: Once installed, open the app and enter the telephone number and login code for your Commtel system. If you are a professional, root your test device