5 ms·

It would be great if Apple and Google had a setting to disable 2G and 3G at the very least.

dragonwriter 6y ago
> It would be great if Apple and Google had a setting to disable 2G and 3G at the very least. I don't know if its a Google, Samsung, or AT&T feature, but my Android has a default-off setting to enable 2G service. Nothing on 3G though.
- mic_ozar 6y ago
  which android phone model?
  - dragonwriter 6y ago
    S10+
baybal2 6y ago
It will not make much if your phone company doesn't do the same, and stops accepting roaming requests from rogue countries. Somebody should also punch Google in the face for building in an "espionage API" into Android: reading sim card serial, imsi, and imei without even a notice. I doubt the thriving market of SS7 interceptions would be anywhere if not for Android creating a market for such data.
- slim 6y ago
  maybe we could build android without it ?
mandragon 6y ago
go to the apple store and ask for a "cdma-less" iphone got this trick from a verizon engineer after complaining about such risks. carriers dont carry them but apple should be able to sell you one
- gruez 6y ago
  >and ask for a "cdma-less" iphone isn't that just a regular GSM phone? According to https://www.techwalls.com/iphone-11-a2111-a2221-a2223-model-number-differences/ https://www.techwalls.com/iphone-11-a2111-a2221-a2223-model-... there's only 3 variants of the iphone 11: the north american variant (with CDMA support), rest of the world variant, and a chinese variant.
  - mandragon 6y ago
    Isn't LTE different than CDMA and GSM? A CDMA-less Verizon iPhone would support LTE (4g) only. Good find, but worth checking if Apple can fulfill this request for Americans.
    - wil421 6y ago
      A CDMA less phone would not be eligible for Verizon.
      - mandragon 6y ago
        https://www.reddit.com/r/verizon/comments/8nvh91/att_iphone_compatible_on_verizon_network/ https://www.reddit.com/r/verizon/comments/8nvh91/att_iphone_...
    - jdofaz 6y ago
      The T-Mobile and AT&T carrier sold iPhones did not come with CDMA support, not sure about current models.
sudosysgen 6y ago
My phone does it. You have to enter this code in the dialer: *#*#4636#*#* After which you can navigate to "Phone Information" and decide which networks to use. For example, if you select "LTE Only", then the phone will not connect to 2G/3G networks, and instead show that there is no signal. This works for most Android phones.
- angott 6y ago
  This will break phone calls if your carrier does not support Voice over LTE (VoLTE), as the device will be unable to switch over to 3G to handle incoming/outgoing calls.
  - sudosysgen 6y ago
    Yes. That's a necessary side effect of disabling 2G/3G. If that's an issue, you can either only disable 2G, or switch to a carrier that supports VoLTE.
- phh 6y ago
  Yup this should work on most Android smartphones.
- odiroot 6y ago
  There's like 20 options there. Do you know how to just disable 2G (keep LTE/3G enabled)?
  - sudosysgen 6y ago
    "LTE/WCDMA/UMTS (auto)" should do it.
ComodoHacker 6y ago
It would be better if telcos and their equipment vendors implemented some protections. Like the ability to disable roaming (and deny any related SS7 requests) at subscriber's request.
jmull3n 6y ago
Is 4G & 5G vulnerable? I wonder if a jailbreak tweak exists to disable 2G and 3G.

> It would be great if Apple and Google had a setting to disable 2G and 3G at the very least. I don't know if its a Google, Samsung, or AT&T feature, but my Android has a default-off setting to enable 2G service. Nothing on 3G though.

mic_ozar 6y ago
which android phone model?
- dragonwriter 6y ago
  S10+

baybal2 6y ago

It will not make much if your phone company doesn't do the same, and stops accepting roaming requests from rogue countries. Somebody should also punch Google in the face for building in an "espionage API" into Android: reading sim card serial, imsi, and imei without even a notice. I doubt the thriving market of SS7 interceptions would be anywhere if not for Android creating a market for such data.

slim 6y ago
maybe we could build android without it ?

mandragon 6y ago

go to the apple store and ask for a "cdma-less" iphone got this trick from a verizon engineer after complaining about such risks. carriers dont carry them but apple should be able to sell you one

gruez 6y ago
>and ask for a "cdma-less" iphone isn't that just a regular GSM phone? According to https://www.techwalls.com/iphone-11-a2111-a2221-a2223-model-number-differences/ https://www.techwalls.com/iphone-11-a2111-a2221-a2223-model-... there's only 3 variants of the iphone 11: the north american variant (with CDMA support), rest of the world variant, and a chinese variant.
- mandragon 6y ago
  Isn't LTE different than CDMA and GSM? A CDMA-less Verizon iPhone would support LTE (4g) only. Good find, but worth checking if Apple can fulfill this request for Americans.
  - wil421 6y ago
    A CDMA less phone would not be eligible for Verizon.
    - mandragon 6y ago
      https://www.reddit.com/r/verizon/comments/8nvh91/att_iphone_compatible_on_verizon_network/ https://www.reddit.com/r/verizon/comments/8nvh91/att_iphone_...
  - jdofaz 6y ago
    The T-Mobile and AT&T carrier sold iPhones did not come with CDMA support, not sure about current models.

sudosysgen 6y ago

My phone does it. You have to enter this code in the dialer: *#*#4636#*#* After which you can navigate to "Phone Information" and decide which networks to use. For example, if you select "LTE Only", then the phone will not connect to 2G/3G networks, and instead show that there is no signal. This works for most Android phones.

angott 6y ago
This will break phone calls if your carrier does not support Voice over LTE (VoLTE), as the device will be unable to switch over to 3G to handle incoming/outgoing calls.
- sudosysgen 6y ago
  Yes. That's a necessary side effect of disabling 2G/3G. If that's an issue, you can either only disable 2G, or switch to a carrier that supports VoLTE.
phh 6y ago
Yup this should work on most Android smartphones.
odiroot 6y ago
There's like 20 options there. Do you know how to just disable 2G (keep LTE/3G enabled)?
- sudosysgen 6y ago
  "LTE/WCDMA/UMTS (auto)" should do it.

ComodoHacker 6y ago

It would be better if telcos and their equipment vendors implemented some protections. Like the ability to disable roaming (and deny any related SS7 requests) at subscriber's request.

jmull3n 6y ago

Is 4G & 5G vulnerable? I wonder if a jailbreak tweak exists to disable 2G and 3G.