There were some questions here about cold boot attacks and how this relates to phones etc. without a good explanation given. I recently found an article about new attack that also explains (and give pointers to) articles about cold boot attacks. link:
https://cacm.acm.org/research-highlights/sram-has-no-chill-exploiting-power-domain-separation-to-steal-on-chip-secrets/
Please note this more of a white paper than a blog post with links to other whitepapers /explanations where some technical knowledge is expected.