System Messages v5.17.4
APK · 13.7 MB · version code 51704 · Android 5.1+ · uploaded Jun 13, 2025
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File information
- Version
- v5.17.4 (51704)
- Uploaded
- Jun 13, 2025
- Size
- 13.7 MB
- Requires
- Android 5.1+ (API 22)
- CPU support
- ARM 32-bit, ARM 64-bit
- Screen
- Small screens and larger
- MD5
- 07b8f56321d5b5a681e1c811d5a4410c
- Signing certificate (SHA-1)
- 57:15:2B:DF:BA:78:F4:35:FA:88:45:85:FD:F2:85:96:84:BA:03:16
- Signed by
- [email protected], CN=AndroidTeam, OU=OSTeam, O=Oplus, L=DongGuan, ST=GuangDong, C=CN
- File name
- com-heytap-mcs-51704-70884201-07b8f56321d5b5a681e1c811d5a4410c.apk
- Package
- com.heytap.mcs
- Downloads (all versions)
- 500M+
- Age rating
- PEGI 3 · Everyone
What's new in v5.17.4
initial version
Permissions (24)
This version requests 24 permissions, 2 of them sensitive.
- Display over other apps Sensitive android.permission.SYSTEM_ALERT_WINDOW
- See all installed apps Sensitive android.permission.QUERY_ALL_PACKAGES
- Control vibration android.permission.VIBRATE
- Full network access android.permission.INTERNET
- Google Play install referrer com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE
- Interact across users full android.permission.INTERACT_ACROSS_USERS_FULL
- Internal broadcast protection (app-defined) com.heytap.mcs.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
- Internal system window android.permission.INTERNAL_SYSTEM_WINDOW
- Log (custom) com.oplus.permission.safe.LOG
- Manifest wake lock (custom) android.Manifest.permission.WAKE_LOCK
- Mcs recieve mcs message (custom) com.heytap.mcs.permission.RECIEVE_MCS_MESSAGE
- Mcs send mcs message (custom) com.coloros.mcs.permission.SEND_MCS_MESSAGE
- Mcs send mcs message (custom) com.heytap.mcs.permission.SEND_MCS_MESSAGE
- Mcs send push message (custom) com.heytap.mcs.permission.SEND_PUSH_MESSAGE
- Mount unmount filesystems (custom) android.permissionCo.MOUNT_UNMOUNT_FILESYSTEMS
- Oplus oplus component safe (custom) oplus.permission.OPLUS_COMPONENT_SAFE
- Persistent (custom) com.oplus.permission.safe.PERSISTENT
- 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
- Safe manager (custom) com.oplus.permission.safe.SAFE_MANAGER
- Send mcs message (custom) com.heytap.mcs.SEND_MCS_MESSAGE
- View Wi-Fi connections android.permission.ACCESS_WIFI_STATE
- View network connections android.permission.ACCESS_NETWORK_STATE
Security & authenticity
Security rating: Unknown
Signing certificate
- Certificate issued to “Oplus” Not the developer's name (“ColorOS”). Names in certificates can't be verified, so this alone proves nothing.
Store checks
- Developer signature not checked yet Jun 13, 2025
- Uploaded by “bestappsforyourphone” 17 followers · uploading since 2025
Scans come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures. AAPKs doesn't scan files itself.
How to install System Messages on Android 5.1+
You'll need about 27.3 MB of free space.
- Download the APK — tap Download APK above (13.7 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-heytap-mcs-51704-70884201-07b8f56321d5b5a681e1c811d5a4410c.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 07b8f56321d5b5a681e1c811d5a4410c. 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?”. This file has no malware rating from the source store. If Play Protect warns about it, tap Cancel. 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 System Messages — 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 5.1+). Download it again, or pick an older version.
- “App not compatible with your device” — this build contains native code for 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.