How to block a stolen phone using serial number

Sorry, that is not possible.

Yelanap Said:

"How to block a stolen phone using serial number: My Iphone was stolen. No find my device enabled so wish to lock the phone so it cannot be used"

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No. Unfortunately, this is not an option.

But, a few thoughts: Was it Stollen? Or did you misplace it? Misplacing it, I'm sure it would not disappear.

A. Text the iPhone:

But to relocate it, dial it or text it, asking the person(s) who has your iPhone to contact you. Request that they say a free numbers, when you say hello. Ask them to say a code ("One-Two-Five-Niner-Three") after you say "hello?". That way, you can be confident of whom is calling you about what.

B. Contact Local Authorities:

Perhaps, someone was honest enough to hand it over, having come across it just sitting about.

C. Backtrack your Locations:

If you were at a retail store recently, or as a cafe, stop by and see if it was placed aside by the store manager.