Samsung Galaxy RAM Plus: How Much Virtual Memory to Use

RAM Plus is Samsung’s virtual memory feature that reserves part of your Galaxy’s internal storage to act as overflow RAM. On modern Galaxy phones with 8GB or more of physical memory, the real-world benefit ranges from negligible to slightly negative — UFS storage is dramatically slower than LPDDR5X, and cycling apps in and out of a swap file adds latency. This guide, current for One UI 7 in 2026, explains which Galaxy models still expose the toggle, how to configure it, and when leaving it off is the smarter call.

What RAM Plus Actually Does

RAM Plus creates a ZRAM-backed swap partition on your phone’s UFS storage. When physical RAM fills up, the kernel compresses the least-active app data and writes it to this swap area, then pulls it back when you return to the app. It is functionally the same idea as a Windows page file, tuned for mobile workloads.

The tradeoff is speed. Typical UFS 3.1 and UFS 4.0 storage reads at roughly 2–4 GB/s sustained, while LPDDR5X memory delivers 50 GB/s or more. An app that gets pushed to RAM Plus and then recalled does not wake up instantly the way a truly resident app does — it has to be decompressed and restaged, which on a busy phone can add a visible half-second pause before the interface responds.

Which Galaxy Models Support RAM Plus in 2026

RAM Plus has shipped with One UI on Galaxy S, Note, A-series, Fold, and Flip devices since 2021. Samsung removed the user-facing size slider on several recent flagships running One UI 7, leaving only an on/off toggle.

Model line	RAM Plus toggle	Adjustable size
Galaxy S21 / S22 / S23	Yes	Yes (up to 8GB)
Galaxy S24 / S25 / S26	Yes	No — fixed at 8GB, on/off only
Galaxy A15 / A25 / A35 / A55	Yes	Yes (2–8GB)
Galaxy Z Fold 4 / 5 / 6	Yes	No on Fold 5 and newer
Galaxy Z Flip 4 / 5 / 6	Yes	Yes on Flip 4; fixed on Flip 5+
Galaxy Tab S8 / S9 / S10	Yes	Yes

If Settings → Battery and device care → Memory → RAM Plus is missing entirely on your device, you are on a build where Samsung disabled it. A factory reset will not bring it back — the feature is gated by firmware, not user choice.

How to Enable or Adjust RAM Plus on One UI 7

The path shifted slightly from One UI 6. On current Galaxy builds:

Open Settings.
Tap Battery and device care (on some carrier builds this is just Device care).
Tap Memory.
Scroll to RAM Plus and tap it.
Toggle the switch on.
If a size slider appears, pick a value (2GB, 4GB, 6GB, or 8GB depending on model).
Tap Restart when prompted — the change does not take effect until reboot.

If you do not see a size option, your model only offers on or off. The default allocation on those devices is 8GB.

Choosing the Right RAM Plus Size

More is not better. Every gigabyte you hand to RAM Plus is a gigabyte of slower storage-backed swap that the system will try to use before it starts killing background apps. On a phone with plenty of physical RAM, that means the OS will evict warm apps to storage it did not need to evict, and you will feel the slowdown when you return to them.

Light users — calls, messaging, browser, one or two apps at a time

Turn RAM Plus off entirely, or set it to the minimum (2GB) if your model requires it on. You will never fill 8GB of physical RAM with this usage pattern, and keeping swap disabled avoids unnecessary writes to UFS storage.

Moderate users — social apps, video, light multitasking

2GB to 4GB is the sweet spot. This gives the system a small buffer for the occasional memory spike without pushing frequently used apps to storage. Community testing on the Galaxy S22 and A54 has shown measurable app-reload improvements at 2GB and essentially no change above 4GB.

Power users — gaming, video editing, heavy multitasking

Counterintuitively, turn it off if your phone has 12GB of physical RAM or more. Games and video editors allocate large contiguous memory regions the kernel will not swap out, so RAM Plus sits idle while still occupying storage. On Galaxy S24 Ultra and S25 Ultra, long gaming sessions are consistently reported as smoother with RAM Plus disabled.

If your phone has 6GB or 8GB of physical RAM and you are a power user, set RAM Plus to 4GB, not the maximum. Going higher increases swap thrashing rather than helping.

Free Up Internal Storage First

RAM Plus needs free UFS space to carve out its swap partition. If your phone is more than 90 percent full, the feature either refuses to enable or falls back to a smaller allocation than you selected. Aim for at least 20GB free before turning it on.

Settings → Battery and device care → Storage → Trash clears recently deleted items.
Delete the Samsung Cache folder in Device care → Storage → Advanced.
Remove unused games — modern titles frequently exceed 5GB each.
Offload photo and video backups to Samsung Cloud or Google Photos, then delete local copies.
Uninstall carrier bloatware you don’t use (Settings → Apps → sort by size).

Reduce Background Activity So RAM Plus Has Less Work to Do

If RAM Plus is constantly swapping, that is a symptom of too many background apps — not a reason to increase the swap size. Rein them in:

Go to Settings → Battery and device care → Battery → Background usage limits.
Add chronic memory offenders to Sleeping apps or Deep sleeping apps. Good candidates: Facebook, Messenger, TikTok, Snapchat, large shopping apps.
Restrict auto-start under Settings → Apps → [App] → Battery → Background restricted.
In Developer options, set Background process limit to Standard limit or At most 4 processes if you are on a 6GB device.

On a well-tuned phone, you rarely need RAM Plus at all.

Test Whether RAM Plus Is Actually Helping

Samsung does not expose swap statistics in the standard interface, but you can read them directly:

Install a free terminal app like Termux from F-Droid.
Run the command: cat /proc/meminfo
Look at SwapTotal and SwapFree. If SwapTotal matches your RAM Plus size but SwapFree stays close to that value during a normal day of use, the feature is idle — turn it off.
If SwapFree is consistently low and you notice app reloads happening frequently, you actually need it. Keep it on.

This is the only objective way to know whether RAM Plus is earning its keep on your specific device.

How to Disable RAM Plus Completely

Settings → Battery and device care → Memory → RAM Plus.
Toggle the switch off.
Tap Restart when prompted.

After reboot, the swap partition is released and the storage is returned to general use. You will not see a dramatic performance jump on most devices. What you will notice is slightly better battery life on phones where storage writes were meaningful, and snappier returns to recently used apps on phones with plenty of physical RAM.

If RAM Plus Won’t Turn On or Keeps Reverting

Greyed-out toggle: not enough free storage. Clear at least 10GB and try again.
Reverts after reboot: a Samsung security patch from late 2025 broke RAM Plus persistence on some A-series builds. Install the latest update under Settings → Software update → Download and install.
Missing entirely on S24 or S25: Samsung disabled it for some carrier variants. Not a bug, not user-fixable. Check the Samsung Community forum thread for your exact model and build number.
Phone feels slower after enabling: turn it back off. Not every device benefits, especially older A-series models with slower eMMC-based storage.
App crashes increase after enabling: rare, but seen on phones with degraded UFS wear. Check storage health in Samsung Members → Diagnostics → Storage.

When to Just Buy More RAM Instead

If you bought a Galaxy A15 or A25 with 4GB of RAM and your phone feels like it is constantly struggling, RAM Plus is not going to fix it. Swap to storage is a consolation prize, not a substitute for actual memory. If you can, move to a Galaxy with 8GB or more of physical RAM — the difference in app launch speed, background app retention, and battery life is immediately obvious, and no amount of RAM Plus tuning on a 4GB device will match it.

RAM Plus is most useful as a small safety margin — 2GB to 4GB on a mid-range phone with 6GB of physical RAM. Anything more aggressive and you are just trading real memory speed for slower storage access. The honest answer, for most Galaxy owners in 2026, is that leaving RAM Plus off or at its lowest setting produces the best day-to-day experience.