Like most free bypasses, you usually lose cellular signal (No SIM) and the ability to sign into iCloud via Settings (though the App Store usually works).
The software is surprisingly clean and straightforward. You don’t need to be a developer to navigate the "Start" and "Bypass" buttons. ibypasser-v1-1-bypass-ios-15-free-download
Only download from links verified by the "checkra1n" or "Palera1n" communities. Like most free bypasses, you usually lose cellular
Since this requires "jailbreak-like" access to the system, you are essentially lowering the security wall of your device. Like most free bypasses