Thanks.Not to mention ATT likes to lie to you which network tech you're using. There was quite a bit of a dust up when they were just putting the 5G icon on phones when they were connected to 3/4G signals.
Since your phone is only showing 5G and not 5G+ I suspect you're actually on the legacy LTE when it comes to speed..
Some of these speeds listed are just not the best but, they do show the differences between the 3 networks to an extent. One thing that does help if you're getting marginal results if to put the phone into airplane mode for ~30 seconds and then back to normal an it will force the phone to reregister with the cell site and possibly pick different channels if they're available. Most cell sites have multiple channels setup depending on the direction of the antennas.
We produce independent coverage maps based on data crowdsourced from our global community of app users.These detailed coverage maps are available for free in the Opensignal app — download it now.www.opensignal.com
If you want to test TMO in comparison a cheap option is a SIM from USMobile https://www.usmobile.com/plans
Just make sure you get the right sim as one is TMO and the other is VZW. Tello is another option but, more of a long term setup with their plans / pricing. They both have a 5GB for $15 option though and that's sufficient for running a few tests. When you're dealing with 5G a speeditst will consumer ~500MB per test easily due to the higher bandwidth and no throttling on the apps.
Netflix / fast.com is alright but, ookla is the gold standard though some of the partner servers lack capacity and provide slow results sometimes. If you find one that's quick on your laptop / PC try to pick the same one on the phone.
I'm 2 blocks from fiber in any direction and it pisses me off. I tried some smaller known companies that run close to see if they would extend their lines and couldn't get any of them to consider it. I had Comcast gig though which was reliable but as you know it's pricy and uploads capped at 35mbps. Not to mention the data cap.I have a iPhone 14 Pro Max.
Though yeah AT&T cellular speeds suck sometimes.
Thankfully I have AT&T Fiber hardwire line at home!
It's all about capacity. ATT though tends to just be slower than other carriers.There is also cell tower breathing, which depends on the amount of devices connected to that particular tower. Just FYI.