The PHIVOLCS FaultFinder
v20 · 3.9 MB · code 20
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File information
UpdatedAug 17, 2025
PublishedApr 7, 2021
Packagecom.phivolcs.faultfinder_0
Versionv20 (20)
Size3.9 MB
MD5a00af8a17da79568c8f6677e8cffe49b
Min SDK34
Malware scanTRUSTED
Signature SHA15C:C8:4B:3B:F7:9A:1D:28:15:28:45:06:A9:8E:97:F6:A3:47:EE:5A
SignerCN=Joel Bandibas, OU=Geological Survey of Japan, O=National Institute of Advanced Industrial Science and Technology, L=Tsukuba, ST=Ibaraki Prefecture, C=305-0046
Total downloads100,000
This version100,000
DeveloperJoel Bandibas
Age ratingEveryone
What's new in v20
With declared foreground location service.
Security scan
TRUSTED
- Developer signature verified 2025-08-17
- Signature SHA1 5C:C8:4B:3B:F7:9A:1D:28:15:28:45:06:A9:8E:97:F6:A3:47:EE:5A
- File MD5 a00af8a17da79568c8f6677e8cffe49b
How to install The PHIVOLCS FaultFinder v20 on Android 14+
Takes about 2 minutes. You'll need roughly 3.9 MB of free storage.
- Grab com.phivolcs.faultfinder_0_20.apk — hit the Download button above (3.9 MB). 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 a00af8a17da79568…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find com.phivolcs.faultfinder_0_20.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 CN=Joel Bandibas, OU=Geological Survey of Japan, O=National Institute of Advanced Industrial Science and Technology, L=Tsukuba, ST=Ibaraki Prefecture, C=305-0046. 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 TRUSTED).
- Done — open The PHIVOLCS FaultFinder — tap Open on the install screen, or find the The PHIVOLCS FaultFinder icon in your app drawer.
Common install errors for The PHIVOLCS FaultFinder
- "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 14 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.