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Galaxy Z Fold 7 Owners Report Sharper Battery Drain After One UI 8.5 Update

If the issue stems from the recent firmware change, a follow-up Samsung update could restore normal battery performance.

Overview

  • Users began reporting faster battery loss after installing One UI 8.5 earlier this week, with multiple Reddit threads and tech sites documenting the complaints.
  • Reported symptoms vary from modest extra drain to claims battery life was cut roughly in half or that the phone now needs two charges in a day.
  • The pattern points to a software change rather than hardware, but Samsung has not issued an official statement or confirmed a cause.
  • The Fold 7 already uses a 4,400 mAh battery and had middling endurance in reviews, so a software-induced regression would be plausible and potentially reversible with a patch.
  • Beyond daily inconvenience for owners, persistent drain could affect user confidence in the Fold line ahead of Samsung's next models and should prompt a timely firmware fix.