Communication Engineering v4.0
APK · 45.3 MB · version code 14 · Android 7.0+ · uploaded Jul 3, 2026
- Signature matches the Google Play version Details
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Answer this to unlock the download. It keeps automated downloaders away.
Compared with the latest version
The latest version is v4.1, uploaded Oct 8, 2026 — about 3 months after this one.
- Size: this file is 45.3 MB; the latest is 36.3 MB (9 MB smaller).
- Both versions request the same permissions.
File information
- Version
- v4.0 (14)
- Uploaded
- Jul 3, 2026
- Size
- 45.3 MB
- Requires
- Android 7.0+ (API 24)
- CPU support
- x86 32-bit, x86 64-bit, ARM 32-bit, ARM 64-bit
- Screen
- Small screens and larger
- MD5
- 4a19a9ed79026c7659780e54addfbd0a
- Signing certificate (SHA-1)
- A9:B9:9D:F5:13:AA:85:D7:F9:72:0E:AD:6A:83:8D:51:85:E7:34:F4
- Signed by
- CN=Rajil Tl, OU=App development, O=Softecks, L=Mumbai, ST=Maharashtra, C=IN
- File name
- in-softecks-communicationengineering-14-75505369-4a19a9ed79026c7659780e54addfbd0a.apk
- Package
- in.softecks.communicationengineering
- Downloads (all versions)
- 10K+
- Age rating
- PEGI 3 · Everyone
What's new in v4.0
✅ Improved layout and design
✅ Made subject categories offline compatible
✅ Added 21 free communcation tools
✅ Added Dictionary, Formulas, MCQs, How-to and Q&A sections
✅ Added Light/Dark theme switch
✅ Enhanced offline support
✅ Improved search, bookmarks, performance and user experience
Permissions (14)
This version requests 14 permissions, 1 of them sensitive.
- Read shared storage Sensitive android.permission.READ_EXTERNAL_STORAGE
- Access adservices ad id android.permission.ACCESS_ADSERVICES_AD_ID
- Access adservices attribution android.permission.ACCESS_ADSERVICES_ATTRIBUTION
- Access adservices topics android.permission.ACCESS_ADSERVICES_TOPICS
- Advertising ID com.google.android.gms.permission.AD_ID
- Download without notification android.permission.DOWNLOAD_WITHOUT_NOTIFICATION
- Full network access android.permission.INTERNET
- Google Play install referrer com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE
- Internal broadcast protection (app-defined) in.softecks.communicationengineering.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
- Prevent the device from sleeping android.permission.WAKE_LOCK
- Receive push notifications com.google.android.c2dm.permission.RECEIVE
- Run foreground services android.permission.FOREGROUND_SERVICE
- Show notifications android.permission.POST_NOTIFICATIONS
- View network connections android.permission.ACCESS_NETWORK_STATE
Security & authenticity
Security rating: Trusted
Signing certificate
- Signature matches the Google Play version Checked by the source store on Jul 3, 2026.
- Certificate issued to “Softecks” This is the certificate of the Google Play version.
- Same certificate as the 3 other versions checked
Store checks
- Developer signature verified Jul 3, 2026
- Validated against Google Play Jul 3, 2026
- 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 (3 other versions compared). AAPKs doesn't scan files itself.
How to install Communication Engineering on Android 7.0+
You'll need about 90.6 MB of free space.
- Download the APK — tap Download APK above (45.3 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 in-softecks-communicationengineering-14-75505369-4a19a9ed79026c7659780e54addfbd0a.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 4a19a9ed79026c7659780e54addfbd0a. 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 Communication Engineering — 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 7.0+). 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 32-bit, ARM 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.