O2 refused to unlock my iphone7

[MI5 Level 94: Supreme]

WHat about mobile data?

[VaPr]

Yes. After i put this sim in other phone everything is ok

[VaPr]

Mobile data works with this sim on other phone perfecrly

[MI5 Level 94: Supreme]

I mean does it work in the locked iPhone?

[MI5 Level 94: Supreme]

Anyway, regardless, I guarantee mobile data will work and your phone is barred to uk networks.
I guess your phone was stolen in the uk and shipped abroad to be sold. Uk barred  phones will work abroad but this is changing with the latest EU regulations.
If it was locked, the phone would say “sim not supported” but you sim is accepted which means it’s not locked, but in fact barred.
It’s useless in the uk except as an iPod or paperweight.

[VaPr]

Well, if phone is stollen somebody should complain abt. Who can make complain if I am the only owner. Thats is my question how to improve phone is mine only and nobody else used it before?

[MI5 Level 94: Supreme]

Complain to where you bought it from. It was likely stolen in uk and the place you bought it is handling stolen property which will now belong to a uk insurance company, not you, unfortunately.
It would never have been discovered if you hadn’t tried to use it in uk.

[VaPr]

This phone was packed it was brand knew Does it mean it was stollen from shop/warehouse etc?

[MI5 Level 94: Supreme]

Yes, or from a delivery lorry etc.

[viridis Level 55: Good Authority]

"Last months I tryed to handover this phone to other person and make reseting to make sure no any personal data left behind. After that my phone become a brick."

You reset it, or they reset it?
Did the phone leave your sight?