Cyberespionage Using SS7 via Circles

Re:Cyberespionage Using SS7 via Circles by sudosysgen on Wednesday December 02, 2020 @01:40PM (#25279750)

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.

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Re:Cyberespionage Using SS7 via Circles by angott on Wednesday December 02, 2020 @02:03PM (#25280041)

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.

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Re:Cyberespionage Using SS7 via Circles by sudosysgen on Wednesday December 02, 2020 @02:46PM (#25280646)

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.

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Re:Cyberespionage Using SS7 via Circles by odiroot on Wednesday December 02, 2020 @05:03PM (#25282295)

There's like 20 options there. Do you know how to just disable 2G (keep LTE/3G enabled)?

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Re:Cyberespionage Using SS7 via Circles by sudosysgen on Wednesday December 02, 2020 @06:12PM (#25283041)

"LTE/WCDMA/UMTS (auto)" should do it.

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Re:Cyberespionage Using SS7 via Circles by phh on Wednesday December 02, 2020 @04:51PM (#25282146)

Yup this should work on most Android smartphones.

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