REDCOM Sigma Client v6.4 build 5
APK · 99.2 MB · version code 860 · Android 11+ · uploaded Jun 12, 2026
- Signature matches the Google Play version Details
Quick check before downloading
Answer this to unlock the download. It keeps automated downloaders away.
Compared with the latest version
The latest version is v6.4.1 build 181, uploaded Oct 4, 2026 — about 4 months after this one.
- Size: this file is 99.2 MB; the latest is 99.3 MB (163.9 KB larger).
- Both versions request the same permissions.
File information
- Version
- v6.4 build 5 (860)
- Uploaded
- Jun 12, 2026
- Size
- 99.2 MB
- Requires
- Android 11+ (API 30)
- CPU support
- x86 32-bit, x86 64-bit, ARM 32-bit, ARM 64-bit
- Graphics
- OpenGL ES 2.0+
- Screen
- Small screens and larger
- MD5
- bfa76800307efd7c9511e21e6dd3cb0c
- Signing certificate (SHA-1)
- 47:74:C5:89:4E:CC:83:90:51:89:31:91:50:A6:35:40:59:8F:A1:8B
- Signed by
- CN=Staff Engineer, OU=Product Release Control, O="REDCOM Laboartories, Inc.", L=Victor, ST=New York, C=US
- File name
- com-redcom-sigma-860-75176218-bfa76800307efd7c9511e21e6dd3cb0c.apk
- Package
- com.redcom.sigma
- Downloads (all versions)
- 1K+
- Age rating
- PEGI 3 · Everyone
What's new in v6.4 build 5
Minor bug fixes
Permissions (20)
This version requests 20 permissions, 5 of them sensitive.
- Call phone Sensitive android.permission.CALL_PHONE
- Camera Sensitive android.permission.CAMERA
- Find accounts on the device Sensitive android.permission.GET_ACCOUNTS
- Read contacts Sensitive android.permission.READ_CONTACTS
- Record audio (microphone) Sensitive android.permission.RECORD_AUDIO
- Authenticate accounts android.permission.AUTHENTICATE_ACCOUNTS
- Control vibration android.permission.VIBRATE
- Foreground service phone call android.permission.FOREGROUND_SERVICE_PHONE_CALL
- Foreground service special use android.permission.FOREGROUND_SERVICE_SPECIAL_USE
- Full network access android.permission.INTERNET
- Internal broadcast protection (app-defined) com.redcom.sigma.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
- Manage accounts android.permission.MANAGE_ACCOUNTS
- Manage own calls android.permission.MANAGE_OWN_CALLS
- Modify audio settings android.permission.MODIFY_AUDIO_SETTINGS
- Prevent the device from sleeping android.permission.WAKE_LOCK
- Run at startup android.permission.RECEIVE_BOOT_COMPLETED
- Run foreground services android.permission.FOREGROUND_SERVICE
- Show notifications android.permission.POST_NOTIFICATIONS
- Use full screen intent android.permission.USE_FULL_SCREEN_INTENT
- 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 Jun 12, 2026.
- Certificate issued to “REDCOM Laboartories, Inc.” This is the certificate of the Google Play version.
- Same certificate as the 3 other versions checked
Store checks
- Developer signature verified Jun 12, 2026
- Validated against Google Play Jun 12, 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 REDCOM Sigma Client on Android 11+
You'll need about 198.4 MB of free space.
- Download the APK — tap Download APK above (99.2 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 com-redcom-sigma-860-75176218-bfa76800307efd7c9511e21e6dd3cb0c.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 bfa76800307efd7c9511e21e6dd3cb0c. 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 REDCOM Sigma Client — 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 11+). 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.