You might find this angle interesting to. It&#x27;s why Clive and I have pushed for not trusting the carriers, basebands, or cellphones themselves for years now.<p><a href="https:&#x2F;&#x2F;www.schneier.com&#x2F;blog&#x2F;archives&#x2F;2015&#x2F;08&#x2F;ss7_phone-switc.html#c6703762" rel="nofollow">https:&#x2F;&#x2F;www.schneier.com&#x2F;blog&#x2F;archives&#x2F;2015&#x2F;08&#x2F;ss7_phone-swi...</a>