Hey, I've had a Samsung Galaxy A55 since January and for about a week now the battery has been draining super fast. I haven't installed anything weird, no new apps. I checked the settings but I don't see anything odd running. Do you have any idea what could be causing that?
I've seen this happen with my phone before - battery just drops out of nowhere for no obvious reason. Usually it's some app doing weird stuff in the background, but what you need to watch out for is location services and network sync. Sometimes it's not one single app causing trouble, but a bunch of smaller ones that together drain power constantly. Try going to Settings > Battery and see if there's something in "Battery usage" that stands out - not just the apps at the top, but system services too.
A common trap people forget about: system updates running in the background. Samsung tends to do updates as a background task, especially after a major update. Check Settings > Software update, and you'll see if something's preparing. While you're at it, you can also verify that Wi-Fi and Bluetooth aren't constantly trying to connect - it's weird but it can use up a lot of power if the settings are misconfigured.
If this really just started out of nowhere and you don't see anything suspicious, honestly a software restart could help - not a factory reset, just a full reboot or a safe mode restart to see if some app is still causing problems after restarting. Sometimes something breaks in the system without you seeing it directly.
The Galaxy A55 has a 5000 mAh battery so 3 hours is definitely not normal, especially if nothing changed with your apps. It usually comes down to two things: either an app running in the background that's eating up the processor (check the "battery usage" section in settings, not just the active apps), or the battery itself starting to wear out after a few months, it's rare but it happens. A stupid thing to check: turn off WiFi and Bluetooth for a day to see if it makes any difference, sometimes a paired device looking for connection can really tank your battery life. If nothing helps, try a complete factory reset, and if it's still bad after that, it's probably the battery that's dead and you'll need to get it replaced.
It could also be something stupid like auto brightness stuck on max mode, or a wifi/bluetooth connection that won't turn off properly and is draining all the power! Try switching the screen to manual mode just to test it for a day and let me know if that changes anything.
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