Silent Phone - Secure Calling
v6.15.1 · 21.7 MB · code 453067568
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File information
UpdatedFeb 14, 2026
PublishedJan 22, 2021
Packagecom.silentcircle.silentphone
Versionv6.15.1 (453067568)
Size21.7 MB
MD554785ac82888e7051f2ee4af2b3eee66
Min SDK21
ABIsx86, x86-64, armeabi-v7a, arm64-v8a
Malware scanTRUSTED
Signature SHA12B:56:BA:64:CB:9E:49:6B:C0:7B:1B:D3:24:9A:D0:05:4D:79:00:B4
SignerCN=Janis Narbuts, OU=SilentPhone, O=Silent Circle LLC, L=National Harbor, ST=Maryland, C=US
Total downloads500,000
This version500,000
DeveloperSilent Circle
Age ratingEveryone
What's new in v6.15.1
Every release of Silent Phone, including this one, has important fixes and enhanced performance.
Security scan
TRUSTED
- Developer signature verified 2026-02-14
- Signature SHA1 2B:56:BA:64:CB:9E:49:6B:C0:7B:1B:D3:24:9A:D0:05:4D:79:00:B4
- File MD5 54785ac82888e7051f2ee4af2b3eee66
How to install Silent Phone - Secure Calling v6.15.1 on Android 5.0 Lollipop+
Takes about 2 minutes. You'll need roughly 21.7 MB of free storage.
- Grab com.silentcircle.silentphone_453067568.apk — hit the Download button above (21.7 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 54785ac82888e705…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find com.silentcircle.silentphone_453067568.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=Janis Narbuts, OU=SilentPhone, O=Silent Circle LLC, L=National Harbor, ST=Maryland, C=US. 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 Silent Phone - Secure Calling — tap Open on the install screen, or find the Silent Phone - Secure Calling icon in your app drawer (this build targets x86/x86-64/armeabi-v7a/arm64-v8a devices).
Common install errors for Silent Phone - Secure Calling
- "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 x86/x86-64/armeabi-v7a/arm64-v8a native code. Devices with a different CPU will reject it.