IIJ SmartKey v2.1.5
APK · 4.3 MB · version code 13 · Android 4.0.3+ · uploaded Mar 23, 2023
- Same certificate as v2.1.7, 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 v2.1.7, uploaded Feb 10, 2026 — about 2 years after this one.
- Size: this file is 4.3 MB; the latest is 5.4 MB (1.1 MB larger).
- The latest version asks for 2 more permissions: Show notifications, Internal broadcast protection (app-defined).
File information
- Version
- v2.1.5 (13)
- Uploaded
- Mar 23, 2023
- Size
- 4.3 MB
- Requires
- Android 4.0.3+ (API 15)
- CPU support
- x86 32-bit, x86 64-bit, ARM (legacy), ARM 32-bit, ARM 64-bit, MIPS, MIPS 64-bit
- Screen
- Small screens and larger
- MD5
- f23a7ddb55cc68437af53bd28b379aed
- Signing certificate (SHA-1)
- 82:92:0F:96:89:3C:4F:86:50:53:81:02:8E:CF:FC:C5:6C:9E:C1:2D
- Signed by
- OU=Product Division, O=Internet Initiative Japan Inc., L=Chiyoda-Ku, ST=Tokyo, C=JP
- File name
- jp-ad-iij-smartkey2-13-64611742-f23a7ddb55cc68437af53bd28b379aed.apk
- Package
- jp.ad.iij.smartkey2
- Downloads (all versions)
- 50K+
- Age rating
- PEGI 3 · Everyone
What's new in v2.1.5
* Add support for Android 12 (API Level 31).
* Change compatible Android version for slide authentication (Android 5.0 or newer).
Permissions (11)
This version requests 11 permissions, 3 of them sensitive.
- Camera Sensitive android.permission.CAMERA
- Find accounts on the device Sensitive android.permission.GET_ACCOUNTS
- Modify shared storage Sensitive android.permission.WRITE_EXTERNAL_STORAGE
- Control vibration android.permission.VIBRATE
- Full network access android.permission.INTERNET
- Get tasks android.permission.GET_TASKS
- Prevent the device from sleeping android.permission.WAKE_LOCK
- Push messaging (app-defined) jp.ad.iij.smartkey.permission.C2D_MESSAGE
- Receive push notifications com.google.android.c2dm.permission.RECEIVE
- Use credentials android.permission.USE_CREDENTIALS
- View network connections android.permission.ACCESS_NETWORK_STATE
Security & authenticity
Security rating: Trusted
Signing certificate
- Certificate issued to “Internet Initiative Japan Inc.” This is the certificate of the Google Play version.
- Same certificate as v2.1.7, which matches Google Play v2.1.7
Store checks
- Developer signature verified Mar 23, 2023
- Uploaded by “appupdater” Gold tier · 117,810 followers · uploading since 2020
Scans come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures (2 other versions compared). AAPKs doesn't scan files itself.
How to install IIJ SmartKey on Android 4.0.3+
You'll need about 8.6 MB of free space.
- Download the APK — tap Download APK above (4.3 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 jp-ad-iij-smartkey2-13-64611742-f23a7ddb55cc68437af53bd28b379aed.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 f23a7ddb55cc68437af53bd28b379aed. 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 IIJ SmartKey — 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 4.0.3+). 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 (legacy), ARM 32-bit, ARM 64-bit, MIPS, MIPS 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.