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Get UNIVERSAL GSM CODES old version APK for Android
당신은 GSM 휴대 전화를 소유하고 있다면 다음 몇 가지 코드가있다
If you own a GSM phone then there are several codes that can be entered to tell the network how to handle incoming calls and more. These codes are not really considered secrets, but they are poorly documented by service providers.