Auto Change Wallpaper v3.1
APK · 8.9 MB · version code 9 · Android 4.1+ · uploaded Aug 12, 2020
- Same certificate as v3.7, which matches Google Play Details
Quick check before downloading
Answer this to unlock the download. It keeps automated downloaders away.
Compared with the latest version
The latest version is v3.7, uploaded Jul 22, 2026 — about 5 years after this one.
- Size: this file is 8.9 MB; the latest is 9.3 MB (404.6 KB larger).
- Android: this version needs Android 4.1+; the latest needs Android 4.4+. Use this one if your device runs an older Android release.
- The latest version asks for 1 more permission: Advertising ID.
- The latest version no longer asks for: Approximate location, Receive push notifications.
File information
- Version
- v3.1 (9)
- Uploaded
- Aug 12, 2020
- Size
- 8.9 MB
- Requires
- Android 4.1+ (API 16)
- CPU support
- x86 32-bit, x86 64-bit, ARM 32-bit, ARM 64-bit
- Graphics
- OpenGL ES 2.0+
- Screen
- Small screens and larger
- MD5
- 7c2e399d6d4e762405e45dd8822dd5fa
- Signing certificate (SHA-1)
- 61:38:6D:DD:1A:44:6E:09:1C:FA:20:88:D3:92:EA:1C:25:B3:EF:BC
- Signed by
- C=84
- File name
- viet-dev-apps-autochangewallpaper-9-52899200-7c2e399d6d4e762405e45dd8822dd5fa.apk
- Package
- viet.dev.apps.autochangewallpaper
- Downloads (all versions)
- 500K+
- Age rating
- PEGI 3 · Everyone
What's new in v3.1
Add new features:
+ Special feature: Now You can search and download photos from Flickr to your device and add to the album "Auto Change Wallpaper".
+ Add feature Search by GroupId on Flickr.
+ Add feature Sort the photos in your album.
+ Fix some bugs.
Permissions (12)
This version requests 12 permissions, 2 of them sensitive.
- Approximate location Sensitive android.permission.ACCESS_COARSE_LOCATION
- Read shared storage Sensitive android.permission.READ_EXTERNAL_STORAGE
- Full network access android.permission.INTERNET
- Google Play install referrer com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE
- In-app purchases (Google Play Billing) com.android.vending.BILLING
- Prevent the device from sleeping android.permission.WAKE_LOCK
- Receive push notifications com.google.android.c2dm.permission.RECEIVE
- Run at startup android.permission.RECEIVE_BOOT_COMPLETED
- Run foreground services android.permission.FOREGROUND_SERVICE
- Set wallpaper android.permission.SET_WALLPAPER
- View Wi-Fi connections android.permission.ACCESS_WIFI_STATE
- View network connections android.permission.ACCESS_NETWORK_STATE
Security & authenticity
Security rating: Trusted
Signing certificate
- Same certificate as v3.7, which matches Google Play v3.7
Store checks
- Developer signature verified Aug 12, 2020
- Antivirus scan passed Jan 16, 2021
- Uploaded by “fenerbahce1997” Bronze tier · 1,435 followers · uploading since 2017
Scans come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures (1 other version compared). AAPKs doesn't scan files itself.
How to install Auto Change Wallpaper on Android 4.1+
You'll need about 17.8 MB of free space.
- Download the APK — tap Download APK above (8.9 MB). Chrome shows “File might be harmful” for every APK file; choose Download anyway only if you trust this file.
- Open the file — tap the download notification, or open Files › Downloads and tap viet-dev-apps-autochangewallpaper-9-52899200-7c2e399d6d4e762405e45dd8822dd5fa.apk.
- Allow the install (first time only) — Android 8 and later asks for permission the first time an app opens an APK: tap Settings in the prompt, turn on Allow from this source, then go back. Manual path: Settings › Apps › Special app access › Install unknown apps (on Samsung: Settings › Apps › ⋮ › Special access). On Android 7 and older: Settings › Security › Unknown sources.
- Check the file (optional) — the MD5 of the downloaded file should be 7c2e399d6d4e762405e45dd8822dd5fa. If it differs, the file is damaged or was changed: delete it and download again.
- Tap Install — Android asks “Do you want to install this app?”. If Google Play Protect shows a warning, read it before you continue: the source store rated this file Trusted, but only install apps from sources you trust. If an earlier version is installed, this one only installs as an update when it is signed with the same certificate (SHA-1 shown above).
- Open Auto Change Wallpaper — tap Open on the install screen, or find it in your app drawer.
Common install problems
- “App not installed” — a version signed with a different certificate, or a newer version, is already installed (Android doesn't allow downgrades). Uninstall it first; back up your data, because uninstalling deletes it.
- “There was a problem parsing the package” — the file is incomplete, or your Android is too old (this version needs Android 4.1+). Download it again, or pick an older version.
- “App not compatible with your device” — this build contains native code for x86 32-bit, x86 64-bit, ARM 32-bit, ARM 64-bit only. Devices with other processors can't install it.
- Blocked by Play Protect — Play Protect checks apps from outside the Play Store. Only continue if you trust the source.