[OnePlus 6T  Questions & Answers] InvalidFelix:
Hello,

To whomever reads this, I'm hoping I'm in the correct area as I haven't found a means of procuring a solution myself thus far.

My issue started about a month ago with the OnePlus 6T, I work for a Fire Department and have a service provided by AT&T Called, FirstNet, they are working in tandem together and FirstNet is a Government owned non-profit organization that has a contract with AT&T in order to build the new infrastructure that is under way. My current issue is that I switched to FirstNet 2 months ago with my Samsung S7 Active, which was running Oreo 8.1.

When I did this the Representative told me that my phone wouldn't be fully compatible with FirstNet so I wouldn't receive the "Priority" Features until I upgraded as it didn't support band 14, which I was fine with.

I started looking for a new phone in which someone mentioned the OnePlus 6T, I looked into it and was immediately for it, essentially a Samsung S9 for half the price, brand new with a warranty? hard to beat that. So I looked into it and decided to purchase it. Thinking that because it was Band 14 capable (Which is what FirstNet runs off of) it would work with my provider just fine, especially since it was up to par with the Samsung S9. Upon receiving it, I tried to activate it on FirstNet but it wouldn't recognize the device. Surprise surprise, so I went through this runaround for 4 days with FirstNet, they sent me a new SIM card, I managed to activate it for the phone but now, I can't receive calls? wonderful. (It's actually been quite nice to not get phone calls for a while lol.)

I called FirstNet about it and they said because it's not a "FirstNet" ready phone, I wont get to use all of the features. Turns out this is because AT&T implements the code into their phones, the code/software known as IOC2/Evolved Packet Core/First Priority(TM) . Surprise surprise the only phones that have them are phones like Samsung, Apple, Moto, LG, Blackberry and Sonim which immediately set me off as because my phone isn't a mainstream popular device, it's unacceptable to use on FirstNet. When something as simple as code from a non-profit organization could've been distributed to other phone producers as well and yet.. it hasn't?

Priority on FirstNet means, if we are attacked by Terrorists, have some kind of Natural Disaster or even have a massive event that bogs down the network, It will set my phone calls to priority so that I can communicate with other emergency service personnel, with FirstNet we also do get this at a discounted rate as I'm sure this is part of the incentive to join and populate the network.

Because my phone is out of the loop I'm unable to receive calls, I can call out just fine, I can text, send photos, use the internet, all just fine, I just can't receive phone calls, which can be troubling for my employer especially if a large event occurs.

The OnePlus 6T supports Band 14 along with a whole other array of bands my Samsung S7 Active didn't, yet it's unable to communicate properly, setting the APN doesn't resolve anything and I've tried contacting both FirstNet and OnePlus, to which both of their replies are to see what the other company can do about it, FirstNet is stating I need to get an AT&T SIM card which will possibly add yet ANOTHER fee to my bill and take away the feature of Priority. OnePlus states they can't do anything about it but are elevating it to their Technician Team (I'm assuming that means Developers.).

Currently, my OnePlus 6T is running off of Oxygen OS 9.0.7, which is based on Oreo 8.1 (Which had IOC2/Evolved Packet Core/First Priority(TM) implemented into it already.) but yet it doesn't have the IOC2/Evolved Packet Core/First Priority(TM) code/software implemented? The way that FirstNet explained it is that the software acts like a kind of switch or filter, operating off of multiple APNs and switching to whichever one is allowing priority requests and since my phone doesn't have that software, I can't receive phone calls.

I'm sure that there's probably a multitude of phones that are experiencing this issue as FirstNet has a very small group of phones that are FirstNet capable. I'm not sure if there's other Emergency Service Personnel experiencing this problem thus far but if there's anyone who can provide a solution to this, not for just the OnePlus 6T but for every phone that's not on the FirstNet list, It would greatly help out, especially since a lot of us don't have much of an income.

To whoever takes the time to read this, I thank you for your time and hope that maybe some kind of resolve can come from this.

Yours truly,

A Concerned Fire Fighter.