Unlock iPhone with Reseller Flex Policy

Flex Policy phones need to be activated with a US carrier. They are not locked to one until activation. That is, they should be able to be activated with any domestic carrier such as T-Mobile. AT&T, Verizon etc... However, they will not activate on foreign carriers.

Unless you activated it with T-Mobile it should not be specifically locked to them. How do you know it's locked to T-Mobile?

Did you insert a T-Mobile sim at any point during setup?

Once activated, they can be unlocked only by the carrier they were activated with. Once unlocked, they should be unlocked for use with any carrier domestic or foreign. The Flex Policy ends once they have been unlocked by the carrier.

Link-> How to unlock your iPhone for use with a different carrier - Apple Support

If you never activated the iPhone with any US carrier, then its technically not locked to anybody yet. But will not be able to be activated with a foreign carrier.

In other words, you need to activate the phone with a US carrier, fulfill their unlocking requirements, then have it unlocked by that US carrier before you can use it with a foreign one.

There's nothing else you can do.

Unfortunately, you will need to follow T-Mobile's unlock policy, however from what I understand even if you are able to get a Flex phone unlocked, it cannot be used outside the US. You can ask T-Mobile in the US about it. In the US, only Apple sells unlocked phones. A Flex phone is advertised as unlocked, but it locks to the first carrier you activate it with.

The ONLY source in the US for truly unlocked iPhones is Apple stores and Apple.com online. Other retailers that advertise “unlocked” really mean “unlocked in the US only, and will lock to the first carrier it is used with”. If it is locked to T-Mobile, and you used it in the US, then you must have used it with T-Mobile. Fortunately, T-Mobile has a liberal unlocking policy. Check it out on their website.

If it is not active on their system, Mint will not be able to see the device to unlock it. That's why they tell you they don't have a lock on it.

You would have to come back to the US, re-activate it on Mint Mobile, and keep it active on Mint Mobile for at least 12 months before they would agree to unlock it.

Mint Mobile uses T-Mobile's network, which may be why they have it listed as T-Mobile. Mint is an MVNO using T-Mobile.

You can find their unlock policy here.

https://www.mintmobile.com/mint-mobile-device-unlock-policy/

What carrier did you use it with in the US?

Go to Settings/General/About and see what it says for Carrier Lock.

Mint is a NVMO (reseller) that operates on the T-Mobile network. You can contact them and ask them to unlock the phone. Once unlocked the US flex policy lock will be removed also.

Ask to be escalated to a higher level of tech support.

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