IIJmio Coupon Switch
v7.1.0 · 769.3 KB · code 42
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File information
UpdatedMar 26, 2022
PublishedMar 26, 2022
Packagejp.ad.iij.couponswitch
Versionv7.1.0 (42)
Size769.3 KB
MD52cdf1f25e9bad55e142c75dc72276fb2
Min SDK21
Malware scanUNKNOWN
Signature SHA1F5:CC:2F:10:FC:21:28:CF:DC:A0:0D:FC:84:27:47:74:7D:93:94:17
SignerOU=Network Division, O=Internet Initiative Japan Inc., L=Chiyoda-ku, ST=Tokyo, C=JP
Total downloads500,000
This version500,000
DeveloperInternet Initiative Japan Inc.
Age ratingEveryone
What's new in v7.1.0
Support 14 digit of 020 phone number.
Security scan
UNKNOWN
- Developer signature verified 2022-03-26
- Scanned for malware 2022-03-26 15:12:42
- Signature SHA1 F5:CC:2F:10:FC:21:28:CF:DC:A0:0D:FC:84:27:47:74:7D:93:94:17
- File MD5 2cdf1f25e9bad55e142c75dc72276fb2
How to install IIJmio Coupon Switch v7.1.0 on Android 5.0 Lollipop+
Takes about 2 minutes. You'll need roughly 769.3 KB of free storage.
- Grab jp.ad.iij.couponswitch_42.apk — hit the Download button above (769.3 KB). If your browser warns about APK files, choose Keep or Download anyway — that warning fires on every APK, not just this one.
- Trust your browser to install — on Android 8+ go to Settings → Apps → Special access → Install unknown apps, pick the app you downloaded with (Chrome, Firefox, Files, etc.), and flip Allow from this source. On older Android, toggle Unknown sources under Security.
- (Optional) Verify the file — compute the MD5 of the downloaded APK and make sure it matches 2cdf1f25e9bad55e…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find jp.ad.iij.couponswitch_42.apk in your Files app under Downloads, then tap it. Android's package installer will appear.
- Check the signer — the install screen will name the publisher. For this build it should read OU=Network Division, O=Internet Initiative Japan Inc., L=Chiyoda-ku, ST=Tokyo, C=JP. If it doesn't match, cancel — you have the wrong file.
- Review permissions & tap Install — scroll the permission list, then confirm. If Play Protect flags it, tap Install anyway (this APK was scanned as UNKNOWN).
- Done — open IIJmio Coupon Switch — tap Open on the install screen, or find the IIJmio Coupon Switch icon in your app drawer.
Common install errors for IIJmio Coupon Switch
- "App not installed" — usually means an older or differently-signed version is already on your device. Uninstall it first, then retry. Your data may be lost unless you back it up.
- "Parse error" — the APK is for a newer Android than yours. This version needs Android 5.0 Lollipop or later. Pick an older build from the versions list below.
- "There was a problem parsing the package" — the download was interrupted. Delete the file and re-download over Wi-Fi.