Network Signal Guru
v4.7.7 · 26.8 MB · code 4070730
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File information
UpdatedFeb 10, 2026
PublishedJan 20, 2021
Packagecom.qtrun.QuickTest
Versionv4.7.7 (4070730)
Size26.8 MB
MD51c786a6f3e965e420d135f57c59f2f85
Min SDK23
ABIsarmeabi-v7a, arm64-v8a
Malware scanTRUSTED
Signature SHA107:FB:2C:FC:CB:9C:30:44:27:ED:39:9B:E9:10:AD:57:EF:EE:5E:44
Signer[email protected], OU=product, O=qtrun.com, L=Beijing, ST=Beijing, C=CN
Total downloads500,000
This version500,000
DeveloperQTRUN Technologies
Age ratingEveryone
What's new in v4.7.7
**New**
- Huawei mate70
**Fix**
- Cumulative decode bugs
- Huawei mate70
**Fix**
- Cumulative decode bugs
Security scan
TRUSTED
- Developer signature verified 2026-02-10
- Signature SHA1 07:FB:2C:FC:CB:9C:30:44:27:ED:39:9B:E9:10:AD:57:EF:EE:5E:44
- File MD5 1c786a6f3e965e420d135f57c59f2f85
How to install Network Signal Guru v4.7.7 on Android 6.0 Marshmallow+
Takes about 2 minutes. You'll need roughly 26.8 MB of free storage.
- Grab com.qtrun.QuickTest_4070730.apk — hit the Download button above (26.8 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 1c786a6f3e965e42…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find com.qtrun.QuickTest_4070730.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 [email protected], OU=product, O=qtrun.com, L=Beijing, ST=Beijing, C=CN. 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 Network Signal Guru — tap Open on the install screen, or find the Network Signal Guru icon in your app drawer (this build targets armeabi-v7a/arm64-v8a devices).
Common install errors for Network Signal Guru
- "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 6.0 Marshmallow 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 armeabi-v7a/arm64-v8a native code. Devices with a different CPU will reject it.