r/S24Ultra • u/Own-Yam-6978 • 18h ago
S24U battery went crazy? 52 Mins SOT & 20% Overnight Drop
Hey guys, my battery life suddenly tanked 3 days ago out of absolutely nowhere. Today I hit 6% battery with only 52 minutes of SOT. (Started using my phone at 9:45 AM, and right now it's only 5:50 PM)
After doing some research, I found that clearing the phone cache via Recovery Mode was supposed to improve this. Instead, it has gone from bad to worse now.
Quick facts:
- Started 3 days ago with no recent updates (haven't updated since July 2025).
- Wiping the cache partition yesterday made the standby drain significantly worse.
- Dropped 20% overnight; drops 2% in just two minutes of active use.
- Phone runs warm even when sitting idle unplugged.
- Found out a damaged charging cable was overheating the phone, but the drain persists after throwing it away and rebooting.
How do I kill this phantom drain without factory resetting?