The iPhone 4s boots directly to the SpringBoard. You have bypassed the activation lock entirely. Because the 4s uses HFS (not APFS), the file system is easy to manipulate.

In the world of smartphone technology, the iPhone 4s holds a legendary status. It was Steve Jobs’ final swan song and the first Siri-enabled device. Fast forward to today, and a specific combination has become a digital archaeology challenge:

You can turn off Activation Lock by signing in to iCloud or resetting your Apple Account password. How to remove Activation Lock - Apple Support