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That's interesting if true. Does the operator have that much control over the phone though? I guess all I care about - does it effect me? I have a pixel2xl,

by a11595 8y ago

That's interesting if true. Does the operator have that much control over the phone though? I guess all I care about - does it effect me? I have a pixel2xl, flashed with CarbonOS. Not a trace of carrier or google crap - carrier config/sprintdm/etc all disabled. Does ATT still have some power to control what my signal strength bars or connection label says? I very highly doubt it. I believe my phone decides what to show by itself - not the carrier. If someone is not in the same position as me - a blind sheep who buys his phone from a carrier, then for them, in my opinion, this is a good step. 5g to them simply means "faster that when it said 4g" - and this holds true for this.

rpeden 8y ago
Doesn't Android or CarbonOS just get its signal strength information from the Qualcomm baseband OS? It's a second OS always running on your phone that you can't do much about. The baseband OS could be lying about signal strength to your phone OS.
- DannyBee 8y ago
  Android/etc allow carriers to customize the signal bar thresholds, etc. So even if the baseband didn't lie (which is one mechanism), the carriers can control the thresholds used on their network.
  - a11595 8y ago
    Google's android does, and there are specific services in the OS for that, such as vz* sprint* tm* and carrier config/services. There are also a bunch of Qualcomm services running that to various things. So my question was - I don't have any of that stuff on my phone, with a custom rooted rom, and those services disabled/removed. Simple test now - if I set my phone to 2G, it connects to 2G with full bars, and says 2G. If I set it to LTE, it says LTE and displays 1 bar. Also, every time I reboot the phone, it pop us "carrier config failed." This makes me believe this likely applies to phones bought from a carrier and not re-flashed. The fact is, if you for some reason buy a phone from a carrier, you are buying into their ecosystem, and for people like that - most people, this 5G icon is what they want, because to them it means faster than the 4G icon on that phone, so I don't see an issue here.
    - londons_explore 8y ago
      Even if you buy the phone from a third party, there are a bunch of custom configs for every carrier in the world in the android source code. They're mostly mundane things like 'should we believe the language specified in the sim card' or 'what max MTU should be used on this network', but there are also more sensitive things like 'what types of tethering to allow' or 'should we allow the user to manually select which network to connect to while roaming.
xyzzyz 8y ago
> That's interesting if true. Does the operator have that much control over the phone though? For most customers, the operator literally sold them the phone. If you're using your own device, not provided by the operator, then it's not relevant to you.
- rblatz 8y ago
  I wouldn’t be so sure, the baseband firmware can be remotely updated by the carrier.
  - mynameisvlad 8y ago
    In addition, most carriers have settings inside AOSP itself. I remember when I had an International Galaxy S7, I'd see 4G if I connected to a carrier that used that branding for LTE (like AT&T) and LTE for others (like T-Mobile).
DannyBee 8y ago
Yes, they do. It's a little different than it used to be though. Historically, the carriers require their magic signal bar algorithms/network type display by contract if you wanted to sell phones in their stores. Now, less phones target each carrier specifically than used to, but ... Some of them also used to require display of various network types in various situations (IE you were required to display 4G in circumstances where it was on their "4g network", regardless of whether you were using a 4g protocol)
- sofaofthedamned 8y ago
  You can't trust any of this when it comes to mobile networks, they control the domain and have to play by their rules. Example? I used to work at a company that made femtocells, basically small 3g base stations. All 2 way radios are a co-operative medium, i.e. shouting 'fire' in a crowded room raises the noise floor for everybody so they all need to shout. We had hundreds of handsets for testing so knew when a particular model/brand/firmware version wasn't working to spec. We'd shoot an email to the manufacturer to get it sorted. Most were fine, but the one that never responded? A certain fruit related company.
  - londons_explore 8y ago
    Orange! Probably the fruit company with the most models of phone (Nearly all white label Huawei models, but still!)
    - sofaofthedamned 8y ago
      Nope. A manufacturer not a mobile network, apologies if it wasn't clear.
      - lovemenot 8y ago
        Sounds like the green grocer sketch. "My Blackberry is not working" https://www.youtube.com/watch?v=kAG39jKi0lI https://www.youtube.com/watch?v=kAG39jKi0lI

by a11595 8y ago

rpeden 8y ago

Doesn't Android or CarbonOS just get its signal strength information from the Qualcomm baseband OS? It's a second OS always running on your phone that you can't do much about. The baseband OS could be lying about signal strength to your phone OS.

DannyBee 8y ago
Android/etc allow carriers to customize the signal bar thresholds, etc. So even if the baseband didn't lie (which is one mechanism), the carriers can control the thresholds used on their network.
- a11595 8y ago
  Google's android does, and there are specific services in the OS for that, such as vz* sprint* tm* and carrier config/services. There are also a bunch of Qualcomm services running that to various things. So my question was - I don't have any of that stuff on my phone, with a custom rooted rom, and those services disabled/removed. Simple test now - if I set my phone to 2G, it connects to 2G with full bars, and says 2G. If I set it to LTE, it says LTE and displays 1 bar. Also, every time I reboot the phone, it pop us "carrier config failed." This makes me believe this likely applies to phones bought from a carrier and not re-flashed. The fact is, if you for some reason buy a phone from a carrier, you are buying into their ecosystem, and for people like that - most people, this 5G icon is what they want, because to them it means faster than the 4G icon on that phone, so I don't see an issue here.
  - londons_explore 8y ago
    Even if you buy the phone from a third party, there are a bunch of custom configs for every carrier in the world in the android source code. They're mostly mundane things like 'should we believe the language specified in the sim card' or 'what max MTU should be used on this network', but there are also more sensitive things like 'what types of tethering to allow' or 'should we allow the user to manually select which network to connect to while roaming.

xyzzyz 8y ago

> That's interesting if true. Does the operator have that much control over the phone though? For most customers, the operator literally sold them the phone. If you're using your own device, not provided by the operator, then it's not relevant to you.

rblatz 8y ago
I wouldn’t be so sure, the baseband firmware can be remotely updated by the carrier.
- mynameisvlad 8y ago
  In addition, most carriers have settings inside AOSP itself. I remember when I had an International Galaxy S7, I'd see 4G if I connected to a carrier that used that branding for LTE (like AT&T) and LTE for others (like T-Mobile).

DannyBee 8y ago

Yes, they do. It's a little different than it used to be though. Historically, the carriers require their magic signal bar algorithms/network type display by contract if you wanted to sell phones in their stores. Now, less phones target each carrier specifically than used to, but ... Some of them also used to require display of various network types in various situations (IE you were required to display 4G in circumstances where it was on their "4g network", regardless of whether you were using a 4g protocol)

sofaofthedamned 8y ago
You can't trust any of this when it comes to mobile networks, they control the domain and have to play by their rules. Example? I used to work at a company that made femtocells, basically small 3g base stations. All 2 way radios are a co-operative medium, i.e. shouting 'fire' in a crowded room raises the noise floor for everybody so they all need to shout. We had hundreds of handsets for testing so knew when a particular model/brand/firmware version wasn't working to spec. We'd shoot an email to the manufacturer to get it sorted. Most were fine, but the one that never responded? A certain fruit related company.
- londons_explore 8y ago
  Orange! Probably the fruit company with the most models of phone (Nearly all white label Huawei models, but still!)
  - sofaofthedamned 8y ago
    Nope. A manufacturer not a mobile network, apologies if it wasn't clear.
    - lovemenot 8y ago
      Sounds like the green grocer sketch. "My Blackberry is not working" https://www.youtube.com/watch?v=kAG39jKi0lI https://www.youtube.com/watch?v=kAG39jKi0lI