I want to use my phone with another carrier but it locked
A temporary SIM unlock should be an option in the SIM Unlock app. Only two can be granted in a year. If the option isn't there, then they might have been used by the person the previously owned the device. Temporary unlocks expire after 30 days.
Since it's an Android you can try requesting a temporary unlock until you find a permanent solution.
I don't know if you can do that from the phone but it's worth a look.
Okay,
Your device can not be SIM unlocked by T-Mobile because you are not a T-Mobile USA customer and because you do not meet the SIM Unlock Policy requirements. You could try a third party unlocking service online or locally at a cellphone repair shop. They will charge a fee to remove the SIM lock.
I have been looking at videos online to help me but it's not possible and that's why I joined this community to get a help.
Thanks,
There's an application in the phone called "Network Unlock" I tried using it be is says "Couldn't Unlock Your Phone"
If you're a Tmobile USA customer and meet the requirements in the link below you can request an unlock code.
https://www.t-mobile.com/support/devices/unlock-your-mobile-wireless-device
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