Gemini users say their chat histories have quietly vanished

Over the past few days, complaints have stacked up from people who say months of conversations with Google's AI chatbot have simply vanished, with Reg readers noting the disappearances seemed to coincide with the rollout of Gemini 3.1.

These complaints are echoed on Google's support forums, where one Gemini Pro user said that all their history had gone AWOL on both phone and desktop despite autodelete being set to keep chats for up to 18 months. They added that prompts still show up in activity logs – suggesting the data exists somewhere, just not where they need it. 

Another user complained that they were missing at least 15 chats with "no evidence in the activity log of them having ever existed," saying that the episode had them ready to jump ship to a rival model after years of tolerating Google's habit of abruptly breaking or binning services ...