Install troubleshooting FAQ
Fixes for the most common download and install problems
Nothing happens when I tap the download button?
Check your network connection and refresh the page. If it still doesn’t respond, use the Direct APK button instead.
The APK install says “unknown sources”?
That’s Android’s standard security mechanism. Go to Settings → Security → Allow installation from unknown sources, then continue. The MangaFrog3 APK is clean and safe.
The app won’t open after installing on iOS?
iOS users need to trust the enterprise certificate first, under Settings → General → Device Management. If the certificate has expired, download the latest MangaFrog3 iOS package again.
I can’t find the downloaded package?
On Android, look in your Files app under the Download folder; on iOS, check your download history in the Files app.
Do I need a MangaFrog3 account?
It’s optional. MangaFrog3 supports guest mode, and signing in lets you sync your bookshelf and offline cache. One-tap phone sign-in is recommended.
How much storage does MangaFrog3 use?
The package is about 38MB and takes around 80MB once installed. Offline cache is downloaded chapter by chapter, so we suggest keeping 1–2GB free for the full experience.