Cache in games on Android: why do you need it and how to work with it

Have you ever gone into the settings of your smartphone and seen that the game takes up gigabytes of memory, although it itself weighs only 100 MB? The culprit for this is the cache, without which modern mobile games simply would not run smoothly. But why do you need it if it is constantly advised to clean it? And why, after cleaning, does the game suddenly start to “slow down” or take a long time to load?

In this article we will look at exactly how the cache affects the gameplay, why it does not always need to be deleted, and sometimes, on the contrary, it is worth saving. You'll learn what data is stored in the cache, how it saves traffic and battery, and when clearing it is really worth it. Let’s separately touch on myths: for example, that the cache “clogs” the phone or that deleting it speeds up the operation of the device. Spoiler: it doesn’t work the way many people think.

What is cache in games and how does it work?

Cache (from English cache —“cache”) is a temporary storage of data that the game downloads from servers or generates during operation. Its main purpose is speed up access to frequently used informationto avoid wasting time on repeated loading or calculation. Imagine that you are playing Genshin Impact or Call of Duty: Mobile: without the cache, every time you start you would have to re-download textures, character models and even the interface.

Technically, the cache in games on Android is divided into two types:

• 📦 Local cache - stored directly on the device. This includes loaded levels, textures, sounds and other static data that does not change between sessions.
• 🌐 Network cache - temporary files that the game downloads from servers during online gameplay (for example, map updates in PUBG Mobile or events in Clash of Clans).

It is important to understand that the cache is not saving the game. If you delete the cache, your progress (levels, achievements, purchases) will remain intact, since it is stored either in the cloud (for online games) or in a separate folder. /data/data/package_name/But temporary data that speeds up loading will be needed. download again.

Why do games need a cache: 5 key functions

Many users perceive the cache as unnecessary garbage, but in fact it performs critical tasks: Here are the main reasons why games actively use it:

1. Reducing loading time. Without a cache, games would have to download the same data (for example, a splash screen or menu) every time. The cache allows you to launch the game almost instantly after the first opening.
2. Saving mobile traffic. data-i="61">) would eat up gigabytes. Free Fire) would eat up gigabytes.
3. Smooth gameplay. The cache stores pre-loaded textures and models so that the game does not freeze when changing locations (for example, in Minecraft or The Witcher: Monster Slayer).
4. Performance optimization. The processor and RAM spend less resources processing already known data.
5. Adaptation for the device. Some games (for example, Honor of Kings) automatically adjust the quality of textures to your smartphone and cache the optimal settings.

Interesting fact: in open-world games (for example, Genshin Impact) the cache can take up to 10–15 GB —this is normal, since the game loads locations in advance to avoid lags when moving the character. Deleting such a cache for no reason means dooming yourself to a long loading time the next time you start it.

When the cache really needs to be cleared

Despite all the advantages, there are situations when clearing the cache is not just useful, but necessary. Here specific caseswhen this is justified:

• 🔄 The game starts to crash or glitch. Damaged cache files can cause crashes (for example, a black screen at startup Among Us or freezing in Brawl Stars).
• 📉 The memory on the device is out.. If less than 10% of the total volume is free, the system may begin to slow down. In this case, it is worth deleting the cache of the most "voracious" ones games.
• 🔧 After a major update. Developers sometimes change the data structure, and the old cache becomes incompatible (for example, Clash Royale after a patch with new cards).
• 🛡️ Suspicion of malwareIf the game. behaves strangely (for example, displays atypical advertising), the cache could have been changed.

But even in these cases do not clear the cache of all games in a row. Start with the one that is causing problems and check if that solves the problem. If not, perhaps the problem is something else (for example, a lack of RAM or a conflict with other applications).

The game crashes at startup|Lags appeared after the update|The device is critically low on memory|Suspicious behavior (advertising, viruses)|The developers recommended clearing the cache in patch notes-->

⚠️ Attention: In some games (for example, Pokémon GO or Harry Potter: Wizards Unite), the cache stores geolocation and map data. Clearing it can lead to this data being re-downloaded in the background, which will eat up traffic and battery.

How to clear the cache correctly so as not to harm the game

If you decide to clear the cache, do it wisely so as not to lose important data. Here are step-by-step guide:

1. Close the game through the multitasking menu (swipe up). This will prevent file corruption.
2. Go to Settings → Applications → [Game name] → Memory.
3. Click Clear cache. Do not click "Clear data" —this will delete the save!
4. Reboot the device (optional, but recommended for stability).

For some games (for example, Roblox or Fortnite) may require additional cleaning through their internal settings. Usually this item is called Clear Cache or Reset Temporary Files and is located in the section Settings → Advanced.

Game	Cache size (example)	Can I clear it without risk	What will happen after cleaning
Genshin Impact	8–15 GB	Yes, but only if there are failures	Long loading the next time you start
PUBG Mobile	1–3 GB	Yes, if the game slows down	Reloading textures and maps
Clash of Clans	200–500 MB	It's better not to touch	Possible lags when loading the village
Minecraft	500 MB–2 GB	Yes, if the worlds were updated	Regeneration of some chunks

⚠️ Attention: In games with cloud saves (for example, Diablo Immortal), clearing the cache may lead to temporary loss of access to account if the servers are overloaded. It is better to do this during off-peak hours.

Myths about the cache: what is actually harmful to your smartphone

There are many myths surrounding the game cache, which often lead to unnecessary actions. Let's look at the most common ones:

• 🧹 "The cache needs to be cleared regularly" —no! Modern Android devices themselves manage the cache through the Trimmechanism. Pointless cleaning will only force the game to download data again.
• ⚡ "The cache slows down the phone" —on the contrary, it speeds up the work. Brakes occur when there is critically little memory (less than 500 MB), but it is not the cache that is to blame, but the total volume of installed applications.
• 📱 "The cache takes up space in the internal memory" - technically yes, but Android considers it “free” space if the system needs it. That is, 10 GB of cache is not equal to 10 GB of “clogged” memory.
• 🔄 "Clearing the cache speeds up the game" —only if the cache is damaged. In other cases, you will get the opposite effect: the game will take longer to load.

One ​​of the most dangerous myths is "clearing the cache removes viruses". In fact, viruses hide in APKfiles or system folders, and not in the cache. If the game is infected, it must be completely removed and reinstalled from the official source (for example, Google Play).

What happens if you clear the cache in an online game?

In most cases, nothing critical: the game will simply download the necessary data again. However, in MMORPGs (for example Black Desert Mobile) this can lead to a short-term disconnection from the server if session data was stored in the cache.

How to reduce the cache size without clearing it

If the cache takes up too much space, but you do not want to clear it (for example, due to slow Internet), there are alternatives methods:

• 🎮 Limit background activity. In the game settings, disable Data preload or Background synchronization (for example, in Hearthstone).
• 🖼️ Reduce texture quality. Some games (for example,. Many games (for example, Apex Legends Mobile) allow you to select Low or Medium instead of High.
• 🗑️ Use built-in tools. Some games (eg. Roblox) have the option Clear Unused Cache, which deletes only unnecessary files.
• 📁 Move the cache to an SD card. This is possible in some games (for example, Minecraft) through the storage settings.

Another effective way is disable automatic updating. games to Google Play. Many updates download new data to the cache, even if you are not playing. To do this:

1. Open Google Play.
2. Go to Profile → Settings → Network settings → Auto-update applications.
3. Select Do not update automatically or Only via Wi-Fi.

What to do if the game does not work after clearing the cache

Sometimes after clearing the cache, the game may behave unstable: crash, show loading errors, or not start at all. Here's what to do in such cases:

1. Reboot your device. This will reset temporary OS data that may have conflicted with the game.
2. Check your Internet connection. Without it, the game will not be able to restore the cache (especially important for Fortnite or War Robots).
3. Update the game. Perhaps clearing the cache coincided with the release of the patch, and now a new version is required.
4. Reinstall the game. If all else fails, delete the game completely (including data) and install it again. Attention: pre-link your account to Google Play Games or another service so as not to lose progress!

If the problem persists, check Error logs (in some games they are available through Settings → Support). your cache. Genshin Impact error Failed to download resource files often means problems with the servers, not your cache.

⚠️ Attention: In games with anti-cheat (for example, PUBG Mobile or Call of Duty: Mobile), frequent clearing of the cache may raise suspicions about the use of cheats. Developers may block an account for "atypical behavior." activity."

FAQ: Frequently asked questions about the cache in games on Android

Is it possible to clear the cache of all games at once?

Technically yes, but this is irrational. It is better to clear the cache selectively, only for those games that cause problems. Mass clearing will lead to a long data reload the next time you start each game.

Why did the game start to slow down after clearing the cache?

Most likely, the game is forced to re-download data from the servers, which takes time and resources. Give it 10–15 minutes to “warm up” - usually after this performance is restored.

How can you learn how much cache a specific game takes?

Go to Settings → Applications → [Game name] → Memory. The cache size (item Cache) and the total amount of data will be indicated there.

Can the cache contain personal data?

In most cases, no - the cache stores technical data (textures, sounds). However, some games (for example, social networks with mini-games) may cache avatars or nicknames of other players. Sensitive information (passwords, payment information) is not stored in the cache.

How to disable caching in games?

You cannot completely disable the cache - this will disrupt the game. But you can limit its size. For example, in Android 12+ there is a function Limit background activity for individual applications. Also, some games (for example Brawl Stars) allow you to disable data preloading in the settings.