For iPhone 4 (GSM) and iPhone 4S, it was possible to use tools like Redsn0w or SAM to perform a tether unlock , but those exploit loopholes closed a decade ago. If you have an iPhone 4S on iOS 6, v26 might work—but why are you trying to unlock a device that no modern carrier supports?
: Ensure you own the device or have permission to perform these actions; bypassing locks on stolen devices is illegal.
: Bypassed devices often lose access to core services, such as FaceTime, iMessage, and cellular calls (SIM signal), effectively turning them into "iPods".













