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iPhone Field Test

MacinJosh

By MacinJosh
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MacinJosh Member Level: LTE Advanced

MacinJosh

Posted
Posted

For those of you who have an iPhone, you can access Field Test mode by dialing *3001#12345#* and then hit call in your phone dialer.

 

Sent from Joshs Evo Shift using Forum Runner

  • Like 1
mirskyc Member Level: eHRPD

mirskyc

Posted
Posted

Which number is the ID of the cell tower I'm connected to? None of the numbers seem to match any of the numbers of the towers I'm near according to the maps in the sponsor forum. Is that number not on those maps?

MacinJosh Member Level: LTE Advanced

MacinJosh

Posted
  • Author
Posted

Unfortunately, I don't know how to find out which tower you are connected to. One thing that may come close is Base ID, but even then I'm still not sure. I will look into it more and let you know.

  • Like 1
gopher_otis Member Level: 1x Advanced

gopher_otis

Posted
Posted (edited)
I will look into it more and let you know.[/Quote]Thank you, I'm curious as well.

 

My gsm went -122 for about half a minute. No service is -105, does that mean I had negative service? ;)

 

Sent via Forum Runner on my jailbroken iOS 5.1 iPhone 4 

Edited by gopher_otis
MacinJosh Member Level: LTE Advanced

MacinJosh

Posted
  • Author
Posted

Thank you, I'm curious as well.

 

My gsm went -122 for about half a minute. No service is -105, does that mean I had negative service? ;)

 

Sent via Forum Runner on my jailbroken iOS 5.1 iPhone 4 

 

That would still be no service, it's just that your phone was no where near a tower. Are you on at&t or T-Mobile, as you mentioned GSM.

gopher_otis Member Level: 1x Advanced

gopher_otis

Posted
Posted

 

That would still be no service' date=' it's just that your phone was no where near a tower. Are you on at&t or T-Mobile, as you mentioned GSM.[/quote']

 

Sprint, I just thought that's what the signal indicator was called. It was weird though because now its back to -83 and I haven't moved at all.

 

Sent via Forum Runner on my jailbroken iOS 5.1 iPhone 4 

MacinJosh Member Level: LTE Advanced

MacinJosh

Posted
  • Author
Posted

Sprint, I just thought that's what the signal indicator was called. It was weird though because now its back to -83 and I haven't moved at all.

 

Sent via Forum Runner on my jailbroken iOS 5.1 iPhone 4 

 

Oh, that is still your CDMA service signal. And I have that problem indoors every once in a while on my Evo Shift. Signal just disappears and then comes back. It's probably happening when it changes towers to compensate and provide better service, which is more draining on the battery when I am equally distant from 2 towers.

gopher_otis Member Level: 1x Advanced

gopher_otis

Posted
Posted (edited)
It's probably happening when it changes towers to compensate and provide better service' date=' which is more draining on the battery when I am equally distant from 2 towers.[/quote']

 

Yeah me too. It's the Sprint crap zone. I get -93 in my apartment and then I step across the street into -70.

 

Sent via Forum Runner on my jailbroken iOS 5.1 iPhone 4 

Edited by gopher_otis
MacinJosh Member Level: LTE Advanced

MacinJosh

Posted
  • Author
Posted

My front yard and in the house are crap signal, and out back it's like 2 to 3 bars better.

MacinJosh Member Level: LTE Advanced

MacinJosh

Posted
  • Author
Posted

Which number is the ID of the cell tower I'm connected to? None of the numbers seem to match any of the numbers of the towers I'm near according to the maps in the sponsor forum. Is that number not on those maps?

 

I did discover that Base ID is the actual tower that you are connected to, however, I can't match them up with the tower names in the Sponsor section.

digiblur Member Level: LTE Advanced

digiblur

Posted
Posted

 

I did discover that Base ID is the actual tower that you are connected to, however, I can't match them up with the tower names in the Sponsor section.

 

I believe the BaseID is the sector you are tied to.

S4GRU Member Level: LTE Advanced

S4GRU

Posted
Posted

 

I believe the BaseID is the sector you are tied to.

 

I think that's accurate. I live next to a Sprint site in New Mexico. As I change sectors around the tower, the Base ID changes.

 

The Base IDs are in no way connected to Sprint Site ID's. The only way you can connect the two is geographically through GPS coords.

 

Robert - Posted from my E4GT with ICS using Forum Runner

Matt.NY.Tech Member Level: 1x Advanced

Matt.NY.Tech

Posted
Posted

Which number is the ID of the cell tower I'm connected to? None of the numbers seem to match any of the numbers of the towers I'm near according to the maps in the sponsor forum. Is that number not on those maps?

 

Serving PN Offset.

 

EDIT: I realized after that my reply is useless as it doesn't show any correlation between the phone and the S4GRU maps. The PN is how your location is determined internally. I'm sure someone here has the know how to assign a PN with the location names ;)

MacinJosh Member Level: LTE Advanced

MacinJosh

Posted
  • Author
Posted

 

I think that's accurate. I live next to a Sprint site in New Mexico. As I change sectors around the tower' date=' the Base ID changes.

 

The Base IDs are in no way connected to Sprint Site ID's. The only way you can connect the two is geographically through GPS coords.

 

Robert - Posted from my E4GT with ICS using Forum Runner[/quote']

 

Even then it's still impossible for me to accurately locate my local towers even on my shift because CDMA field test puts it like a mile from where it actually is.

 

Sent from Joshs iPhone 3Gs using Forum Runner

S4GRU Member Level: LTE Advanced

S4GRU

Posted
Posted

 

Even then it's still impossible for me to accurately locate my local towers even on my shift because CDMA field test puts it like a mile from where it actually is.

 

Sent from Joshs iPhone 3Gs using Forum Runner

 

Have you tried NetMonitor?

 

Robert - Posted from my E4GT with ICS using Forum Runner

MacinJosh Member Level: LTE Advanced

MacinJosh

Posted
  • Author
Posted

 

Have you tried NetMonitor?

 

Robert - Posted from my E4GT with ICS using Forum Runner

 

Yes I have, and but it seems to be more inaccurate for Visalia towers than cdma field test is.

 

Sent from Joshs Evo Shift using Forum Runner

  • 3 months later...
utiz4321 Member Level: 4G WiMax

utiz4321

Posted
Posted

If I wanted to see all the avaliable evdo channels how could I do that on my iPhone? When I use this code it just tells me what channel I am on.

 

 

Thanks.

WiWavelength Member Level: LTE Advanced

WiWavelength

Posted
Posted

If I wanted to see all the avaliable evdo channels how could I do that on my iPhone? When I use this code it just tells me what channel I am on.

 

How to view available carrier channels on your iPhone? Okay. Use your iPhone to order a spectrum analyzer.

 

AJ

  • Like 1
MacinJosh Member Level: LTE Advanced

MacinJosh

Posted
  • Author
Posted

If I wanted to see all the avaliable evdo channels how could I do that on my iPhone? When I use this code it just tells me what channel I am on.

 

 

Thanks.

AJ is right. All phones I have seen will only tell you what channel you are presently on. Spectrum Analyzers are great to see everything within the analyzers range.

  • 3 weeks later...
LookInToMyEyes Member Level: 1x Advanced

LookInToMyEyes

Posted
Posted (edited)

So I have a few questions about Field test.

 

1) what is the best dBm.

2) My Field Test show 1x and 1xEV-DO so this means I don't have eHRPD on my tower? If that even means that. I am a newbie at this so bare with my lack of understanding.

3) What does 3G fall under? 1x, 1xEV-DO or none?

4) If possible which one of these is the fastest and how fast they run? Did I miss one?

 

Thank you for answering my questions, I don't expect them all to be answered, but it will help me better understand them.

 

photo2.png

Edited by LookInToMyEyes
MacinJosh Member Level: LTE Advanced

MacinJosh

Posted
  • Author
Posted

So I have a few questions about Field test.

 

1) what is the best dBm.

2) My Field Test show 1x and 1xEV-DO so this means I don't have eHRPD on my tower? If that even means that. I am a newbie at this so bare with my lack of understanding.

3) What does 3G fall under? 1x, 1xEV-DO or none?

4) If possible which one of these is the fastest and how fast they run? Did I miss one?

 

Thank you for answering my questions, I don't expect them all to be answered, but it will help me better understand them.

 

 

1. The best dBm varies from device to device, however, I have never seen anything greater than -65dBm on an iPhone. (This is partly because I don't get around to too many towers, and I live in weaker signal areas.)

 

2. The iPhone won't tell you if you have eHRPD on your local towers due to the fact that the iPhone 4/4S lacks LTE.

 

3. 3G is EV-DO.

 

4. 1x shows what tower you are connected to as well as what frequency you are connected to as well. 1xEV-DO shows the frequency that you are connected to as well. They both show other things such as the tower identifiers like base station id. I don't have my friends iPhone in front of me right now to check the rest.

  • Like 1
LookInToMyEyes Member Level: 1x Advanced

LookInToMyEyes

Posted
Posted

1. The best dBm varies from device to device, however, I have never seen anything greater than -65dBm on an iPhone. (This is partly because I don't get around to too many towers, and I live in weaker signal areas.)

 

2. The iPhone won't tell you if you have eHRPD on your local towers due to the fact that the iPhone 4/4S lacks LTE.

 

3. 3G is EV-DO.

 

4. 1x shows what tower you are connected to as well as what frequency you are connected to as well. 1xEV-DO shows the frequency that you are connected to as well. They both show other things such as the tower identifiers like base station id. I don't have my friends iPhone in front of me right now to check the rest.

 

Thank you very much, you sir was of great help. I now understand things better.

MacinJosh Member Level: LTE Advanced

MacinJosh

Posted
  • Author
Posted

 

Thank you very much' date=' you sir was of great help. I now understand things better.[/quote']

 

You're welcome.

 

I still wish i had a better understanding than what i have now.

 

Sent from my LG Viper 4G LTE using Forum Runner

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