📣 [BUG] Major Battery Drain Overnight After One UI 7 – Galaxy A55

[xmiiigs]

Hi, just sharing a confirmed issue after the One UI 7 update on my Galaxy A55 or other models.

I’ve noticed my phone now drains up to 15% to 20% overnight when it's idle — but only if Wi-Fi (Wi-Fi 5) and Location are turned ON. If I turn both OFF before sleeping, the battery only drops around 2–4%, like before the update.

🔎 What I’ve done:

• Cleared cache partition

• Updated all apps and system

• Disabled background usage

• Ran diagnostics in Samsung Members

• Submitted 3 reports with system logs

Unfortunately, I keep getting the same copy-paste response from support. This seems like a software-level bug, not a user issue.

📌 I’m posting this to see if others are experiencing the same problem — and hoping Samsung devs notice and include a fix in future updates.

Anyone else with a similar issue on A55 or other Galaxy devices?

[xmiiigs]

Appreciate the reply! 😊
I actually waited more than 2 weeks before reporting this, and just to be sure, I even did a full factory reset — but the issue still happens exactly the same way.

I’ve also seen some posts on Facebook with the same issue — different phone models, but still after One UI 7, and noticed it's still tied to Wi-Fi and Location.

That’s why I really think this isn’t just normal post-update behavior. Hoping others can test it too so we can confirm if it’s a wider bug. 🙏

[xmiiigs]

I actually noticed some improvements in battery during normal use, but the idle drain is definitely worse when Wi-Fi and Location are on.

Samsung already released the June security patch, but sadly, the issue is still there on my end. 😅 Hoping the next updates. 🤞

Thanks for engaging, by the way! 🙏

[xmiiigs]

Oh yeah, I actually saw a similar post on Google before — Samsung replied to the same issue and suggested turning off Wi-Fi and Location when idle. I can’t find the link anymore, but I followed their advice and it really helped!

For now, I just made a routine that turns off Wi-Fi and Location before sleeping, and turns them back on when I wake up. Super helpful, especially while waiting for a proper fix. 😅

And yeah, that’s probably why you haven’t gotten the June patch yet — maybe your unit has a different regional firmware. Hopefully it rolls out to you soon!