Use tools like 3uTools or TunesKit Activation Unlocker to finish the process.
: Supports various legacy devices, though eligibility depends on the specific hardware/software version. Iphone 4s Ios 9.3.6 Icloud Bypass
This is the oldest trick in the book, but it still works on iOS 9.3.6 because Apple never patched it for the 4s. Use tools like 3uTools or TunesKit Activation Unlocker
: The phone loads a captive portal (a custom web page) instead of the Apple activation screen. Iphone 4s Ios 9.3.6 Icloud Bypass