My iPhone got locked to owner

Yazen10 Said:

"My iPhone has a lock to owner problem when I try to add a Sim card from a different country"

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Is this your iPhone? Or is this a used iPhone?

Troubleshooting "Locked to Owner":

Is this a Used iPhone?

Request a Refund:

Seems you've been scammed, though a full assumption on my part. So, ask this person for a refund. This is the site they should have used: What to do Before you Sell, Give Away, or Trade in your iPhone, iPad, or iPod touch - Apple Support. The seller should have known better.

Learn from This:

Next time you go about purchasing a device from someone, request that they let you log into your own iCloud account on it, prior to handing over the money. If they decide to disabled by those rules you've set forth, then do not proceed with the transaction.

Yazen10 Said:

"It’s my iPhone I just want to run 2 SIM cards since one is eSIM "

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SIM Card Vs. eSIM Cad:

In the Western Hemisphere, SIM Cards are in use. In the Eastern Hemisphere, eSIM Cards are in use. So, a SIM card would not work if you are on the eastern hemisphere. So, location seems to be the culprit here.