I notice you're asking about bypassing the Activation Lock on an iPhone 4s running iOS 9.3.5.
How it Works: You must use an Arduino Uno and a USB Host Shield to put the device into a "pwned DFU" state.
The iPhone 4s is a classic piece of smartphone history. Launched in 2011, it was many users’ first introduction to Siri and the stunning Retina display. Fast forward to today, and a specific model—the iPhone 4s running iOS 9.3.5—presents a unique challenge. Because iOS 9.3.5 is the final, terminal operating system for the 4s (it cannot update to iOS 10 or later), many users find themselves staring at an ominous screen: “Activation Lock.” iphone 4s activation lock bypass ios 9.3.5
Apple Support Request: If you are the original owner but lost access, you can submit an Activation Lock support request if you have the original proof of purchase.
The only permanent and safe way to remove the lock is through official channels: I notice you're asking about bypassing the Activation
Quickest "Glimpse" (No PC): DNS Bypass (Limited functionality). 1. Official Apple Support (Recommended)
DNS Bypass (Limited Access): This is a temporary "glitch" rather than a full unlock. By changing your Wi-Fi DNS settings to specific third-party servers (e.g., 104.154.51.7), you can access a web-based interface to watch videos or use social media, but you cannot access the actual iOS home screen. Launched in 2011, it was many users’ first
Third-party tools and "tricks" are often unreliable and may compromise your device's security.
Note: Many of these tools require a computer and may be paid versions with mixed success rates. Summary of Functionality After Bypass Official Method Community Bypass Calls/Text Fully Working Often Disabled App Store Fully Working Limited/Manual Install Updates May Re-lock Device Cost May require hardware/software purchase Do you have the original receipt for this device, or How to remove Activation Lock - Apple Support