How Much Storage Does Honkai: Star Rail Need on PC and Mobile?

How many GB is Honkai: Star Rail? A full install takes a little over 50 GB on PC and roughly 20 to 30 GB on a phone, but the number to plan around is higher: about 70 GB of free space on PC and 35 GB on mobile. The extra room is for version updates, which download next to the existing files before they replace them, and for voice-over packs, which add several gigabytes each. If you only free up exactly what the install takes, the next update is where the game stops.

This guide covers how much storage Honkai: Star Rail takes on each platform, why the store download is so misleading, and how to keep the install from growing out of control on a PC or a phone.

How Many GB Is Honkai: Star Rail on Each Platform

As of Version 4.6, a full install with one voice-over language comes to roughly:

• PC (Windows): about 50 to 55 GB, plus a small launcher.
• Android: about 25 to 30 GB once all game resources are downloaded.
• iPhone and iPad: about 20 GB once all game resources are downloaded.
• PlayStation 5: about 45 GB, with patches that are often larger to download than on other platforms.

These figures move with every update, and they always move up. Honkai: Star Rail adds new planets, story chapters and characters every few weeks, and old content is almost never removed. So the safest way to read the list is as a floor, not a ceiling: the game will be at least this big on your device, and bigger a few versions from now.

Why the Store Download Looks So Small

On iOS, the App Store lists Honkai: Star Rail at under 4 GB, and the Google Play download is similarly small. That is only the app shell. The first time you open the game, it downloads the main resource package, which is where most of the 20 to 30 GB comes from.

This catches a lot of players out. A phone that installs the app without complaint can still fail halfway through the resource download, because the store only checked for the smaller number. Before installing on mobile, look at the real figure for your platform above, not the store listing, and make sure that much space is free before you start.

PC works differently but has a similar gap. The launcher itself is tiny, and the size it shows for the game is the download, not the room needed while files are being unpacked and verified. Leaving extra space during installation avoids the error that appears when the drive fills up mid-install.

How Big Is Honkai: Star Rail on PC

On PC, the game itself takes a little over 50 GB, but keep about 70 GB free on the drive where it is installed. That buffer covers the pre-install for the next version, which the launcher downloads alongside the current game before maintenance. Most pre-installs on PC fall somewhere between about 5 and 10 GB, but occasional updates that rework existing resources have pushed past 18 GB, and those need the full buffer.

The drive matters too. A solid-state drive makes a visible difference in loading screens and teleports between areas, so if you have to choose, it is usually better to clear space on a smaller SSD than to move the game to a larger hard disk.

A quick way to check that a PC is ready for the next update:

1. Check the current size of the Honkai: Star Rail folder.
2. Add about 10 GB for a typical pre-install, or closer to 20 GB to be safe.
3. Add a few more gigabytes for each extra voice-over language you plan to keep.
4. Make sure the drive has at least that much free.

How Much Storage Does Honkai: Star Rail Take on Android and iPhone?

On mobile, plan for about 35 GB of free space: the 20 to 30 GB install, plus room for the next pre-download, which has recently been around 4 to 5 GB per version on phones. Android installs tend to be larger than iOS ones, so Android players should lean towards the top of that range.

Total phone capacity matters more than it does on PC. Once the operating system, photos and other apps take their share, a 64 GB phone leaves very little room for a game this size plus updates. A 128 GB phone is the realistic starting point for playing long term, and 256 GB leaves space for other games alongside it.

iPhones and iPads cannot use a memory card, so every gigabyte has to come from internal storage. Some Android phones can move photos, videos or other apps to a memory card, which frees internal space for the game, though the game itself runs best on internal storage.

Version Updates and the Space They Need

Honkai: Star Rail is online-only, so you cannot skip an update. Once maintenance ends and a new version goes live, the game will not let you in until the update is installed. If there is not enough free space to finish it, you are locked out until you clear some.

That timing is what makes storage worth checking early. A new version usually opens with new events, a limited banner and free rewards on day one, and Version 4.6 arrived with Pearl, a new story chapter and a full event lineup all at once. A failed update on day one means losing time on exactly that content.

The pre-install is the easiest fix. A few days before each version, a pre-install option appears in the PC launcher and a pre-download option appears in the game on mobile. Running it early shows you right away whether there is enough space, and if there is not, you have days to sort it out instead of hours. Bigger content updates also tend to mean bigger downloads, so it is worth watching what is coming, such as the crossover planned for Version 4.8, and leaving more room ahead of versions like that.

How to Keep the Install Under Control

You cannot make Honkai: Star Rail small, but you can stop it from taking more than it needs:

1. Keep one voice-over pack. English, Japanese, Chinese and Korean voices are each a separate download of several gigabytes. If you only listen to one, remove the rest from the voice-over settings in the game or the launcher.
2. Pre-install every version. It spreads the download out and warns you about space problems before update day.
3. Clear space before big versions. Updates that add a new planet or a major event are usually larger than smaller mid-cycle patches.
4. Clear temporary files. On Android, clearing the app cache from system settings removes temporary data without touching your account.
5. Reinstall as a last resort. Progress is saved to your HoYoverse account, not your device, so a clean install can recover space lost to leftover files.

Before you rely on that last step, make sure you know your account login and that its email is still one you control. A reinstall only takes a few minutes when you can log back in, and turns into a recovery problem when you cannot.

How Much Free Space to Keep, by Setup

Put together, the storage question has a clear answer for each kind of player:

1. PC players: keep about 70 GB free, ideally on an SSD, and check the pre-install size before each version.
2. Android players: keep about 35 GB free on a phone with at least 128 GB in total.
3. iPhone and iPad players: keep about 30 GB free, since there is no memory card to fall back on.
4. Players on more than one device: progress carries across PC, mobile and PlayStation through your HoYoverse account, so you can keep the main install on PC and use the phone for quick sessions like daily training, as long as the phone still has room for each update.

Storage is the easy part to fix; the slower part is the roster. Clearing space on a new device does not bring back the characters, Light Cones and relics that took months of Stellar Jade and Trailblaze Power to build. If you would rather start with a strong roster already in place, you can look at Honkai: Star Rail Accounts with the characters you want, hand the daily Trailblaze Power and weekly routine to a player through Honkai: Star Rail Hourly Services, or clear Memory of Chaos and other endgame goals with Honkai: Star Rail Boosting.

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