How to prevent phone eavesdropping

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Mobile
Mobile security
How do I prevent eavesdropping from a handphone if somebody knows my handphone number?
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  • Subhendu Sen
    To stop eavesdropping, you can disable an app that use of the phone's microphone under the phone's settings. Assuming here hand phone meant an Android smartphone, if yes, go to the settings menu and select Personal > Privacy > Permissions > Microphone and turn it off. However, this procedure may vary model to model or OS version.
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  • ToddN2000
    What model phone and where did you purchase it? It may be your phone was cloned and they are listening in..If it was purchased for a local store , take it to them and have them check it out. How do you know they are listening? Could it be that they are close by, using Bluetooth to connect to your phone? A few more specifics on what you are experiencing would help us point you to a better solution.
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  • TheRealRaven
    Simply put, you can't. You have zero control over the portion of the cellular network through which eavesdropping would be most successfully done. You can probably prevent eavesdropping attacks against your physical phone, but you can't do anything about the cell network itself. Vulnerabilities in Signalling System No. 7 (SS7), also known as C7 in the UK or CCSS7 in the US, have been known for a few years and have been publicly demonstrated. It's not (publicly) known why those vulnerabilities have not been addressed. (One theory is that intelligence agencies want it to stay as it is, but I'm not aware of evidence of that.)
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