Hey there seyfullah1,
Thanks for reaching out to Apple Support Communities. I understand you’re having issues using 3D Touch after updating your iPhone. I’ll be happy to help.
To verify, is this happening when attempting to use 3D Touch on the Bluetooth icon in Control Center or a different location?
If you haven’t already, adjust the 3D Touch Sensitivity in Settings > Accessibility > Touch > 3D & Haptic Touch. If that doesn’t help, turn 3D Touch off, restart your iPhone, turn it back on and try again. These links can help with these steps:
Change 3D or Haptic Touch sensitivity on your iPhone
Restart your iPhone
Let me know if this helps.