Mobile Sample Collection
v3.1 · 4.3 MB · code 21
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File information
UpdatedJan 5, 2026
PublishedOct 21, 2020
Packagecom.entrolabs.samplecollection
Versionv3.1 (21)
Size4.3 MB
MD5865e9b54ab0e3d81abd4c5920d0b04d1
Min SDK21
Malware scanTRUSTED
Signature SHA16E:55:E4:A5:08:C6:CD:5E:D1:99:36:A4:15:D2:16:FB:66:0F:13:B6
SignerCN=Entro Labs, OU=Mobile apps, O=EntroLabs India Pvt. Ltd, L=Bhimavaram, ST=Andhra Pradesh, C=91
Total downloads100,000
This version100,000
DeveloperEntro Labs
Age ratingEveryone
What's new in v3.1
* Enhancements and minor bug fixes
Security scan
TRUSTED
- Developer signature verified 2026-01-05
- Signature SHA1 6E:55:E4:A5:08:C6:CD:5E:D1:99:36:A4:15:D2:16:FB:66:0F:13:B6
- File MD5 865e9b54ab0e3d81abd4c5920d0b04d1
How to install Mobile Sample Collection v3.1 on Android 5.0 Lollipop+
Takes about 2 minutes. You'll need roughly 4.3 MB of free storage.
- Grab com.entrolabs.samplecollection_21.apk — hit the Download button above (4.3 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 865e9b54ab0e3d81…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find com.entrolabs.samplecollection_21.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=Entro Labs, OU=Mobile apps, O=EntroLabs India Pvt. Ltd, L=Bhimavaram, ST=Andhra Pradesh, C=91. 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 Mobile Sample Collection — tap Open on the install screen, or find the Mobile Sample Collection icon in your app drawer.
Common install errors for Mobile Sample Collection
- "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.