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9to5Google

Google on why you should disable 2G on your Android phone

9to5Google
Summary
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61% Informative

SMS Blasters can be used by nefarious parties to “lure mobile devices to connect to them” and send fake text messages.

One way to combat them is by disabling the insecure 2 G connection on your Android device.

Android also has an option to disable null ciphers as a key protection because it is strictly necessary for the 2 G FBS to configure a null cipher.