Hi there! Let's get to the bottom of this Bluetooth connection issue with your InPen.

So, you see "inpen611C3F" listed but it shows "not connected," and when you try to connect, it says unsuccessful—sounds like the device is recognized but not pairing properly. To confirm, "inpen611C3F" does look like an InPen Bluetooth device ID, so it’s likely your pen.

Here’s how to proceed step-by-step for your iPhone running iOS 18.6.2:

1. Forget the Device:
Go to Settings > Bluetooth, tap the little (i) icon next to "inpen611C3F," and choose Forget This Device. This removes the old, possibly corrupted connection info.

2. Restart Both Devices:
- Turn off your InPen completely. If there’s a power button or a way to reset it, do that.
- Restart your iPhone (press and hold the side button and either volume button, then slide to power off, then turn it back on).

3. Turn Bluetooth Off and On:
After the restart, go back to Settings > Bluetooth and toggle Bluetooth off and then on.

4. Put InPen in Pairing Mode:
Some versions of the InPen require you to press and hold a button on the pen to enter pairing mode—check your InPen user guide for exact steps if you’re unsure. This allows your phone to detect the pen fresh.

5. Try Connecting Again:
Look for "inpen611C3F" under available devices and tap to connect.

6. Check InPen App Permissions:
If there’s a companion app, make sure the app has permission to use Bluetooth, Location Services (sometimes required), and Notifications as improper permissions can interfere with pairing.

If after these steps it still can’t connect, do you recall if the InPen was previously paired to another device? Sometimes Bluetooth limits connections to a single paired device at a time, and the pen has to be disconnected from others before it can connect anew.

Let me know what you’ve tried so far and how these steps go—I’m here to help get your InPen connected! Are you comfortable trying this out?