How to remove an iphone that is registered to someone else and i don't know who that is?

How to remove an iphone that is registered to someone else and i don't know who that is? - 1

I assume you are referring to Activation Lock.

Short answer: you can't

You can't. The provider thinks the phone has been stolen. Only the provider can change that [it is inside their system] and they won't do it without the owner being present to agree, or a notarized bill of sale, or other nasty paperwork that doesn't usually apply.

I don't believe you can then again my wife left me last month so i don't believe much in this world anymore

Removing Activation Lock is illegal.

All life there stays, but are registration as is up to sites let they delete it, if it can be by them.