Request to unlock the device and contact the expert without providing a solution

Was this a phone purchased through Tmobile or bought from a 3rd party reseller?

Are you the original owner of the phone?

https://www.t-mobile.com/responsibility/consumer-info/policies/sim-unlock-policy

This is basically a user to user forum with some tmobile moderation that don't have account access so you need to contact Tmobile support.

I have understood and reviewed the unlocking regulations and requirements multiple times, and have also communicated with T-mobile experts. Every time, they are very certain that the device meets the requirements and wait for 72 hours to complete the unlocking. However, after 72 hours, I did not unlock and called to inquire about the reason. If I still repeat the previous expert's operation, my heart is also broken! Tried by T-mobile experts time and time again

Impossible, the network operator lock can only be unlocked by the operator system that sells mobile phones, not by Apple! I think it was caused by the lack of assistance from T-mobile senior experts!

Oh, so I really don't understand the complexity of unlocking, but I would like to say that since my device meets the unlocking requirements, the T-mobile operator should have the responsibility to solve this problem for me. What's even more frustrating is that contacting Twitter's T-mobile expert only replied to a few messages before contacting, but there was no response? Does this also mean disrespect for customers? As a customer in the service industry, if they have problems, they must respond. Whether they can solve them is one thing, and not responding is disrespectful to the customer!

You are right, Apple is not a T-mobile product! But the operator lock is a product set by the operator! Unlocking the operator lock is an operation of the operator service. I contacted customer service experts and they told me! The device meets the unlocking requirements and they will help you submit it to their unlocking department for processing! Last year, I also applied to T-mobile for unlocking, but it only took 24 hours to complete the unlocking process! From here, it can be seen that applying for device unlocking requires meeting the requirements of T-mobile, so they can unlock and solve customer service needs. Even if they need to go through Apple's T-mobile experts, they have the responsibility to follow up and process unlocking requests, rather than blindly submitting them, causing customer service to wait for 72 hours every day 😓😓🤯🤯

The problem lies with the fact if T-Mobile did everything right and Apple side of things is the problem how do you expect T-Mobile to fix it? 

I posted a link from Apple to see if you can force the token to your phone in the event everything is done right. You glossed over it expecting T-Mobile to fix a potential Apple issue. 

Scroll more and read it... it specifically says if Carriers did what they supposed to do it tells you ways to force the token to your device. As in Apple has to send it from themselves to your device. 

Try Apples troubleshooting on the page. Worse case your device does not unlock best case your device does. 

FYI carriers won't know its unlocked until the token hits your device and it tells T-Mobile the device is unlocked.  What Apple means by carriers only being able to unlock is to make the request to unlock not actually unlocking it. You can't simply go to Apple to unlock it asking them to unlock it because they don't know if you still owe money among other things other than if the iPhone has been stolen.