how do i de-activate my i-cloud from my i-phone via the computer?

[iMore Question]

how do i de-activate my i-cloud from my i-phone via the computer. i cannot switch my phone on&was asked by the technician to de-activate i-cloud

 

[Just_Me_D]

• Sign in to icloud.com/#find on another computer with your Apple ID (the one you use with iCloud).
  If you’re using another iCloud app, click the app’s name at the top of the iCloud.com window, then click Find My iPhone.
  
• Click All Devices, select the offline device, then click Remove from Account. If you don’t see Remove from Account, click All Devices again, then click the Delete (x) button next to the device.
  If the device comes online again, it will reappear in Find My iPhone. To make sure your device doesn’t reappear, turn off Find My iPhone on the device (follow the instructions above to remove an iOS device or Mac), or if you have an iOS device, you can erase it, then remove it (follow the instructions below to remove an iOS device you no longer have).
  
  Source: iCloud: Remove your device from Find My iPhone

 

[Mifzal Mufthi]

how do i de-activate my i-cloud from my i-phone via the computer. i cannot switch my phone on&was asked by the technician to de-activate i-cloud

Do you have access to your APPs?