Unverified50% confidenceOpinionExact time
Systems that use phone numbers as primary keys may experience identity mismatches in scenarios such as number changes, shared devices, secondary SIM cards, and virtual numbers.
1
Sources
50%
Confidence
Long-term
Relevance
10/19/2026
First Seen
Sources
Related Entities
Related Claims
UnverifiedPhone numbers are usually tied to real-name registration with carriers, are costly to change, and in many scenarios are used as the sole means of account recovery and two-factor verification.70% similarUnverifiedFor third-party services that treat phone numbers as primary keys, Android's new mechanism may lead to identity confusion and misjudgment risks.69% similarUnverifiedThe phone number verification mechanism has expanded from a single account to all accounts signed in on the same device, and a phone number bound to one account may be automatically linked to other accounts.64% similar
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