Downloading an unofficial "EgyMod" APK from third-party sites can expose your device and personal data to several threats:
Real-time monitoring of data and voice consumption, balance refills via E-Flexy, SIM management (disconnection/reconnection), and locating nearby shops.
The official application from the Algerian operator Djezzy is designed for account management, not for bypass "mods."
Modded apps often contain malware or spyware that can steal login credentials or financial information.