There was a cell phone which couldn't focus its camera for two weeks at a time, then could again, and so on. It had something to do with the time stamps of samp

There was a cell phone which couldn't focus its camera for two weeks at a time, then could again, and so on. It had something to do with the time stamps of samples it read from its sensor and a sign extension gone wrong. I never imagined the internal clock could affect camera focus, but it did.