Discover English ABC 123
v4.1.21 · 43.1 MB · code 4001021
Verify you're human
Solve this to start the download.
File information
UpdatedSep 15, 2025
PublishedMar 14, 2020
Packageair.DiscoverABC
Versionv4.1.21 (4001021)
Size43.1 MB
MD5a9fbb9eb9c6199b8f156036e5bd24a95
Min SDK21
ABIsarm64-v8a
Malware scanUNKNOWN
Signature SHA1C6:DA:C4:E5:47:00:DC:24:68:51:34:CE:9B:E4:B9:F5:00:D4:53:F1
SignerCN=IGY, OU=islam, O=islammohy, C=EG
Total downloads1,000
This version1,000
DeveloperIGY
Age ratingEveryone
Security scan
UNKNOWN
- Developer signature verified 2021-11-09
- Signature SHA1 C6:DA:C4:E5:47:00:DC:24:68:51:34:CE:9B:E4:B9:F5:00:D4:53:F1
- File MD5 a9fbb9eb9c6199b8f156036e5bd24a95
How to install Discover English ABC 123 v4.1.21 on Android 5.0 Lollipop+
Takes about 2 minutes. You'll need roughly 43.1 MB of free storage.
- Grab air.DiscoverABC_4001021.apk — hit the Download button above (43.1 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 a9fbb9eb9c6199b8…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find air.DiscoverABC_4001021.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=IGY, OU=islam, O=islammohy, C=EG. 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 Discover English ABC 123 — tap Open on the install screen, or find the Discover English ABC 123 icon in your app drawer (this build targets arm64-v8a devices).
Common install errors for Discover English ABC 123
- "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.
- Works on one phone but not another — this build ships arm64-v8a native code. Devices with a different CPU will reject it.