Hi, I am new to the site, So I will say sorry now if I am posting this in the wrong spot or if someone else has answered this question already. I tried to do a search in here before posting this, I did not find anything.

My gf works for a hotel and when people leave items such as old phones, they have to get rid of them after a while, they either throw them away or keep them if the person does not come back for them. I was given this Samsung Galaxy Note 4 on T-Mobile. The person who owned it never came back for it, but blacklisted it, so I'm assuming he/she got a new phone with insurance, just my guess. I would like to know how I can use this with my AT&T service. I have already rooted the phone, deleted tons of apps I no longer need or use. The phone is basically a small tablet right now. I have looked, and looked on the internet for a few years now with no lucky, the only luck I have come close to having is a place in a mall getting it to work, but I would have to pay $50 and they said no guarantee it would stay unblacklisted. So my main question, is there a way I can get this thing working with AT&T or is this not possible? I have seen another post similar but not quite the same, someone said all you have to do is install an AT&T Firmware over the T-Mobile one, I have only seen one person say this and it was on here, all of the other searches throughout the years on other sites have said nothing about this. So I'm at a stand still here, No clue what I should do. I know some people just say, use one of those websites that do it, well I don't trust those, So I would rather find a fix I can actually try myself. I know it's an older phone, but It would be cool to try it out as a phone for a while to see if I would want to change over to an Android Phone.

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