Every build listed on this site passes the same routine, in the same order, before the download button points at it. First, the file itself: we check its size and signature, scan it, and confirm it installs with the standard Android prompt and asks only for the permissions a floating panel needs.
Second, the install on real phones: a flagship, a mid range device and a budget phone. The panel must open over a live Free Fire match on all three, the floating button must respond mid fight, and every menu, aim, ESP, sensitivity, skins, graphics and HUD, is opened and changed.
Third, the play test: ranked and training sessions with the build, watching for stutter, overlay lag and settings that reset themselves. A build that fails any stage does not replace the previous tested build on the download page. That discipline is the whole reason this site exists.