Signal indicator phone’s.

Have no idea what you're referring to. Is this wireless service and if not what service are we talking about?

The AT&T bands used for cellular can change depending what the FCC has approved for that service area but I don't know what you mean about equipment.

@OttoPylot I didn't know what they meant by signal indicator phones. Now that I understand it's the signal strength indicator on a phone, I'll move this to the wireless forum. Thanks for your insight. 

Still not clear to me what the OP is talking about. 

I wish people would use complete sentences, and give us some context of what they are talking about.  We aren't mind readers.

@joeldf  I think we figured out what the signal indicator was but as far as the equipment goes, 🤷‍♂️. A little more clarity on these questions in the forums would certainly help.

@joeldf  it's 20 questions again?  Worst game ever when the OP really doesn't understand the question either.

If it is possible to infer, the original poster would probably want to install "Network cell info lite" app on his phone.  Android only.  This application will connect to a local Tower and provide some information on what bands of LTE, and if possible 5g.

But so what?   Either a phone works or it doesn't. Either the phone connects or it doesn't because it's a non AT&T tower.  It's just curiosity