Originally Posted by
B. Diddy Welcome to Android Central! You don't see it in the Settings>About Phone menu? Did you get this phone directly from Samsung or a reputable retailer, or did you get it from some random seller? If the latter, and there's no serial number displayed in the About Phone menu, then there's a good chance it's a knockoff.
What do you mean by "network boosters"?
If im not wrong at the time Samsung had download booster where it take mobile data/wifi same time to download files faster or apps.