What If Bitcoin Could Replace SIM Cards?

‘Let’s imagine a future scenario where mobile phones, tablets, and other connected devices don’t need those pesky SIM cards,’ the narrator begins in this video.
Naturally, Bitcoin plays a major role in this thought experiment. The title boldly proclaims, ‘Bitcoin Poised To Make SIM Cards Obsolete.’ We know that Bitcoin has a range of uses, but is this one of them?
The video outlines an interesting scenario. Subscriber identity module (SIM) cards are used to securely store the IMSI (international mobile subscriber identity), which identifies the mobile device. It also stores security authentication information that is used to authenticate subscribers. Since the purpose all boils down to identification, the video asks, ‘Why can’t software do the same thing?’ And then it proposes replacing the little plastic devices with Bitcoin. This could slash operating and manufacturing costs, such as the costs to manufacture and deliver to carriers.
‘In our future scenario, all cell phone networks actively monitor the Bitcoin blockchain,’ the narrator continues. Cell phones broadcast the IMSI signal that links the phone to an account. This account could be replaced a Bitcoin public key.