Library.

“Smartphones use their microphones to actively listen to users' conversations in order to serve targeted advertisements.”

No credible, independent evidence supports the claim that smartphones actively listen through microphones to serve targeted ads. The primary supporting evidence — a leaked CMG marketing pitch deck — was walked back by the company itself. Independent scientific studies, including a Northeastern University analysis of 17,000+ Android apps, found no unauthorized microphone activation. The "eerily accurate" ads people experience are well-explained by extensive metadata collection: location data, browsing history, app usage, purchase records, and cross-device tracking — no eavesdropping required.

“Blue light emitted from smartphones causes permanent retinal damage.”

This claim is false. While high-intensity blue light can damage retinal cells in laboratory settings, the American Academy of Ophthalmology, Harvard Health, and a 2023 NIH review all state there is no evidence that blue light from smartphones causes permanent retinal damage under normal use. Studies cited in support either used unrealistic exposure intensities, animal models, or showed only statistical associations — not causation. The primary proven harms of prolonged screen use are digital eye strain and sleep disruption, not permanent retinal damage.