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Ironheart's profile

Contributor

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3 Messages

Wednesday, February 22nd, 2023 4:35 PM

Closed

Phone compatibility question

I am curious as to the procedure for how a new phone can be added to the "approved list of phones". Obviously the phone must be capable of supporting the radio bands & protocols of the AT&T network (5G: n5, n77, n260 - 4G LTE-FDD: 2,4,5,12,17,66) as well as VoLTE.  Other bands are used by AT&T (14, 29 , 30) but they appear to be supplementary in nature.

So if a new flagship phone is released, such as the Ulefone Power Armor 18T (5G: N1,2,3,5,7,8,20,25,28,38,40,41,66,71,77,78,79 - 4G LTE-FDD/VoLTE: B1,2,3,4,5,7,8,12,17,18,19,20,25,26,28A,28B,66,71), and supports the radio spectrum bands and protocols used by AT&T, what would prevent the phone from being approved for use on the AT&T network? How long does it take for a new phone to be vetted by the engineering team so it can be added to the list of approved/allowed phones? Does a request have to made for a new device to be tested and approved? If so, consider this a request. 

Now I do notice that the Ulefone Power Armor 18T is missing support for one of the 5G bands (n260), the mmWave spectrum, however AT&T seems to have concentrated on the mid-band spectrum, so the loss of the mmWave coverage doesn't seem like a deal breaker. In addition, even if 5G coverage wasn't available at all, the phone would still function satisfactorily on the 4G bands - and I doubt that the 4G coverage is going to be shutdown (like 3G) anytime within this phone's expected lifespan.

So I've put my questions out there - I wonder if anyone from AT&T who has knowledge of the approval process will be able to respond.   

ACE - Expert

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64.7K Messages

1 year ago

The manufacturer must submit the phone for certification testing. How exactly that is done, I don’t know, but it’s not done through this forum.

ACE - Expert

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23.9K Messages

1 year ago

This statement from them will tell you it won't work on ATT as they are not certifying with US carriers.

Contributor

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3 Messages

1 year ago

Sandblaster - thanks for the reply, and I realize these forums are probably not the best place for trying to get a phone approved, but in the world of AT&T, it's almost impossible to navigate to the right support department. My hope was to get someone who works for AT&T, reads these forums & has a connection to the engineering department. I have dealt with another carrier in the past with a similar issue of the phone (Moto X Pure) not being on their allowed/approved list. In that case the phone had not been submitted for certification because the carrier was not going to offer it in their lineup of phones. However I was able to have a request sent to the engineering department, they allowed the activation with the caveat that the carrier would not guarantee the data reliability or functionality until full compliance testing was completed, which began when my request for activation was submitted (eventually the phone was added to their approved list). 

Glimmerman76 - Your reply doesn't change my hope for a solution. The Ulefone seems (technologically) compatible with all US carriers (using LTE) except for those carriers that choose to utilize a whitelist that doesn't seem to be based on any technological compatibility, but instead based upon "manufacturer didn't submit for certification" premise. Those days of GSM vs CDMA are thankfully in the past, so now reliability for voice/data is based more on whether the device's radio has the capability of utilizing all the frequency bands that the carrier uses to provide coverage. Seems to me that a company in a competitive market would be slightly more flexible, given how these days with all the specialized features that some of these devices are capable of, and that some end users have the need for. In my case, the CAT S62 Pro has some of the features I want/need and is on AT&T's approved list, but technologically the phone is 2+ years overdue for an upgrade (new model due 4th quarter of 2023). Is it so terrible to instead be wanting to purchase a phone that has the features I care about along with the latest processor, latest Android OS, superior camera & a headphone jack? I know - the common attitude of "well, just switch carriers" is less than helpful & unfortunately not an option at this time. Again I hold out hope for an AT&T employee to chime in and offer to find a solution - instead of the all to common these days - "sorry, it's just the way it is". 

ACE - Expert

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23.9K Messages

1 year ago

I have experience with trying to get phones on the whitelist.  It's not just that easy.  The carrier needs to be sent phones from the OEM.  It took Sony 4 years to get it done on Att.  

1 Message

7 months ago

The Ulefone Power Armor 18t is indeed capable of using the AT&T network. But I had to use the following workaround. A couple of years ago, I activated the SIM card on one of their cheap approved phones. I then transferred it to the phone I had at the time (Conquest S20), And it worked. Later on I took a chance and purchased the 18t and transferred the SIM card to that phone. It also works fine (4g only) . When I look at my AT&T account, they still list the cheap AT&T phone as my current device. I hope they don’t read this and  shut it off . Lol. 

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