Bypassed devices often have "No Service" (no SIM card functionality) and cannot use iCloud services like iMessage or the App Store normally.
Here is everything you need to know.
Scammers are rampant. Avoid "iCloud unlock software" that asks for your credit card without a demonstrated screen share. Avoid anyone who claims they can permanently convert a 9.3.6 device to a "clean" status in Apple's database. That is impossible. The server never forgets the original owner. ios 936 icloud bypass best