Samsung Knox is one of the most important security systems on Samsung devices. If you are buying a used Samsung phone, importing devices, or working as a technician/reseller, checking Knox status can help you avoid locked or stolen devices.
In this guide, we will show you how to check Samsung Knox (Knox Guard / Knox Policy) by IMEI in seconds using the official tool at CellTool.io.
✅ What is Samsung Knox?
Samsung Knox is Samsung’s enterprise-grade security platform that protects devices at the hardware and software level.
It includes features such as:
Knox Guard
Knox Policy / MDM
Device registration under a company account
Anti-theft device lock system
If a device is enrolled or reported, it may display as:
Registered: Yes
Device State: Locked
Company ownership info and warning message
🔍 Why You Must Check Knox Before Buying a Samsung Phone
Many Samsung phones can look normal externally, but are still blocked at a security level due to:
Company enrollment (enterprise/MDM)
Payment contract issues
Lost / stolen report
Knox Guard activation
A Knox locked device may:
be unusable after reset
block setup screen
reject SIM/network
show a warning message like in the screenshot result
So checking Knox status BEFORE purchase is crucial.
⭐ How to Check Samsung Knox by IMEI on CellTool.io
Follow these simple steps:
Step 1: Visit CellTool.io
Go to the official website:
Step 2: Click “Check IMEI”
On the homepage, click:
✅ Check IMEI
Step 3: Enter IMEI / Serial Number
Enter your device IMEI (15 digits) and submit the check.
Step 4: View Results (Like the Screenshot)
After checking, the system will return Samsung Device Info including:
Device Name (Example: Galaxy S25 Ultra)
Model Number
Serial Number
IMEI
Manufacture Date
Product Type
✅ Knox Guard
✅ Registered: Yes/No
Knox Policy Info
Company Name (if registered)
Device State (Unlocked / Locked)
Warning message (if the device is flagged)
📌 If the device shows Device State: Locked, it indicates Knox Guard lock / enterprise restriction.
🧾 Example Output (What the Knox Result Means)
When Knox is active, the result will show something similar to:
✅ Knox Guard
✅ Registered: Yes
Company Name: Samsung Electronics GmbH
Device State: Locked
A message in German warning that the device may come from a criminal act / belongs to the company
This means:
⚠️ The phone is not safe to buy or use normally.
It is enterprise-registered and likely blocked.
✅ What Does “Registered: Yes” Mean?
Registered: Yes usually means:
The device is enrolled under Knox Guard / Knox Manage / enterprise control.
The phone can be remotely restricted/locked.
Factory reset will not remove the enrollment.
If you are a reseller → this device is high risk.
🛡️ Samsung Knox Check for Resellers & Technicians
CellTool.io IMEI check is useful for:
Used phone stores
Import/export resellers
Repair shops
Device unlocking services
Customers buying from Facebook Marketplace / eBay
Checking Knox saves you from:
buying stolen devices
customer complaints
refund problems
unusable inventory
✅ Final Thoughts
If you want the fastest way to verify Samsung Knox Guard and registration status, just use:
👉 CellTool.io → Check IMEI
In seconds you can confirm:
Knox Guard status
Knox registration
company policy info
locked/unlocked state
This is essential for anyone dealing with Samsung devices.