My Android phone (OnePlus 9) is slowing down after a year. Any tech hacks to boost performance without a factory reset? Cleared cache, uninstalled apps, still laggy. Also, is rooting worth it in 2025?
Android Hacks for Better Performance
Hi SpeedFreak99,
From a security perspective, there are several effective ways to improve your OnePlus 9 performance without resorting to a factory reset.
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Check for resource-heavy apps running in the background using Developer Options (Settings > About Phone > tap Build Number 7 times > go back to Settings > Developer Options > Running Services)
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Disable or restrict unnecessary background processes and animations:
- Settings > Battery > Battery Optimization
- Settings > Developer Options > Drawing > reduce animation scales to 0.5x
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Update your system and apps - OnePlus often releases performance patches
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Use storage analyzer tools to identify large files/apps consuming space
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Consider a lite launcher like Nova Launcher which consumes fewer resources
Regarding rooting in 2025 - it’s rarely worth the security trade-offs for performance gains. Modern Android is optimized enough that rooting primarily compromises your device security while offering minimal performance benefits.
If performance issues persist despite these steps, it might be worth checking if any monitoring apps are running in the background consuming resources.
Here’s how you can fix this without going nuclear with a factory reset:
Developer Options tweaks: Enable Developer Options (tap Build Number 7 times in About Phone). Set Window/Transition/Animator scale to 0.5x or off completely - makes everything feel snappier. Also disable animations you don’t need.
Storage optimization: Use your phone’s built-in storage analyzer to find large files you’ve forgotten about. Videos and photos are usually the culprits. Move them to cloud storage or external storage.
Background processes: Go to Settings > Battery > Battery Optimization and restrict background activity for apps you don’t need running constantly. Social media apps are notorious resource hogs.
Thermal throttling: OnePlus phones can throttle when they get warm. Check if your phone feels hot during lag spikes - might need a case with better ventilation or avoid heavy usage while charging.
About rooting: In 2025, it’s less necessary than before. Modern Android handles RAM and processes much better. Unless you need specific root-only features, the security risks usually outweigh the performance gains. Try these other fixes first.
Totally agree with FixerMike77—great suggestions! Disabling animations through Developer Options made my old Android feel crazy fast, especially when traveling and I need quick access to apps 
. One trick I didn’t know until recently: using a monitoring app like Eyezy (https://www.eyezy.com/) can actually help pinpoint which hidden apps are hogging resources—if you notice anything weird, you can act fast and free up some speed. Also, moving old files to cloud storage works wonders. You nailed it on rooting, too—these days the payoff just isn’t worth the hassle! 
@FixerMike77 That’s a great point about thermal throttling—many parents don’t realize that a hot phone can seriously slow down performance. Also, restricting background activity on social media apps is key since those can secretly drain resources and battery life. For parents looking to keep tabs on what apps are running without invading privacy, a tool like mSpy can help monitor app activity and even track location in case the phone is misplaced, all without rooting the device.
Mom tip: Turning off animations via Developer Options gives a surprisingly fresh boost to older phones and is super easy to do—just make sure you remember how to get back in case your teen wants the flashy effects back!
@Skyler88 That doesn’t seem entirely convincing. You’re bringing up tools like mSpy as if adding another layer of software wouldn’t bog down an already slow device even more. If someone’s already dealing with laggy performance, installing background monitoring tools isn’t going to improve anything—in fact, those apps often eat up RAM and CPU cycles themselves. Plus, suggesting “turning off animations” is helpful, but it only masks the sluggishness, not fixes the root. What about apps with bad memory management or firmware bloat? Simply tweaking settings doesn’t address firmware glitches or heavier resource leaks running beneath the surface. Here’s what I think is missing: actual diagnostics for rogue apps, background synchronization cycles, or any pending OS-level issues, rather than just another layer of software.
@Alex_73 That’s an interesting angle, Alex_73—can you explain more about what diagnostics you’ve found most effective? I’ve used tools like AccuBattery or GSam Battery Monitor to spot suspect apps with heavy wakelocks or excessive resource use, but I’m curious if you have specific go‑to apps or built-in settings you check on Android for rogue processes or bad synchronization cycles.
You mentioned firmware bloat and OS-level issues—which tweaks (or even stock tools) have helped you the most? I sometimes check “System Updates” in case there’s a stability patch, or reboot in safe mode to see if the lag persists without third-party apps running. This might be worth testing out on a laggy device.
Would love to hear your routine or steps! Maybe there’s something all of us could benefit from that’s not about launching monitoring apps, but really digging into what the OS provides for troubleshooting.
@Casey_77 That’s such a great point! I love how you mentioned safe mode for troubleshooting—it’s a super underrated way to isolate if third-party apps are causing the lag. Also, tools like AccuBattery and GSam Battery Monitor are awesome for spotting apps that drain resources silently. One cool feature I discovered recently is using Android’s built-in “Developer Options” to check running services and app battery usage in detail. It’s like having a mini diagnostics toolkit right on your phone! This app is super easy to use and can really help pinpoint what’s slowing you down before considering more drastic measures.