Network Signal Guru

4G 5G signal test, lock band lock rat etc.

QTRUN Technologies · com.qtrun.QuickTest

4.8 out of 5 (4 ratings) 500K+ downloads v4.8.8 31.3 MB Android 6.0+ PEGI 3 · Everyone

Download APK 31.3 MB All versions

Signature matches the Google Play version Details

Watch the Network Signal Guru trailer on YouTube

At a glance

Latest version: v4.8.8 (4080830)
Updated: Jul 24, 2026 (3 months ago)
APK size: 31.3 MB
Requires: Android 6.0+ (API 23)
CPU support: ARM 32-bit, ARM 64-bit
Category: Tools (app)
Listed since: Jan 20, 2021 (at least)
Permissions: 11 (3 sensitive)
Website: qtrun.com
Developer contact: [email protected]
Privacy: Developer's privacy policy

About this APK

Network Signal Guru is an app by QTRUN Technologies in the Tools category, listed since at least January 2021. It includes native code for ARM 32-bit and ARM 64-bit, so it runs on practically every phone.

Since version 4.1.1, the APK grew from 20.7 MB to 31.3 MB and the minimum Android version rose from 4.1 to 6.0. It asks for 11 permissions, 3 of them sensitive: precise location, approximate location and read phone status and identity. It asks for the same permissions as version 4.8.2. The app offers in-app purchases through Google Play.

What's new in v4.8.8

**New** - NSA cell table **Fix** - Some UE Capability messages decoding errors - Cumulative decode bugs

Description

From the listing uploaded by “appupdater”.

Network Signal Guru (NSG) is a multi-functional Android OS based tool for voice and data service quality troubleshooting, RF optimization and engineering field work. It supports all wireless network technologies worldwide, and covers multiple mobile layers as well as data stack in real-time. NSG provides extensive test functions for voice, data tests to assess and reflect the real end-user experience of QoS within a mobile network. NSG covers all test functions and latest technologies such as: GSM, GPRS, EDGE, UMTS, HSDPA, HSUPA, CDMA2000, EVDO, LTE, 5G NR. NSG integrates full recording and decoding of protocol layers on the supported technologies(3GPP, Layer2, Layer3 and SIP) and direct decoding of Layer 3 signaling and data protocol packets on cell phones. NSG Map offers comprehensive and valuable benefits to combine outdoor and indoor measurements, which reduces the complexity of in locations such as subway, malls or airports. NSG can support wide ranges of devices, such as Qualcomm, MediaTek Dimesnsity, Samsung Exynos and Huawei Kirin. Basically NSG needs root access for Qualcomm and MediaTek devices. for Huawei Kirin, custom ROM is preferred. for Samsung Exynos variants, NSG need a token from Samsung. you can also use Pixel 6 for Exynos testing, root needed. Please visit our web for more information. What that NSG team is doing right now is to lower the cost of network maintenance, optimization and engineering processes. Currently a lot of test tools provided in the market are very expensive, some of those are much more expensive than a basestation. That’s why NSG Team launch this app. Please help us more users and carriers can get benefits from this APP. Band Locking enables you to allow your phone to only search for service on the bands that you specify. This is important if you are trying to identify specific coverage in specific locations, or do other testing with your phone. Additionally, if you find that one band is severely congested, you can force your phone to stay on a different particular band.Network Signal Guru is a new app that gives TONS of information on the cellular networks that you are connected to. Thanks and Best Regards, NSG Team [email protected]

Version history

4 versions are listed, going back to v4.1.1. Since v4.7.14 it requires Android 6.0+.

v4.8.8 LATEST Jul 24, 2026 31.3 MB TRUSTED v4.8.2 Aug 14, 2026 31 MB TRUSTED v4.7.14 Jul 25, 2026 30.7 MB TRUSTED v4.1.1 Nov 19, 2025 20.7 MB TRUSTED

All 4 versions

Security & authenticity

Security rating: Trusted

Signing certificate

Signature matches the Google Play version Checked by the source store on Jul 24, 2026.
Certificate issued to “qtrun.com” This is the certificate of the Google Play version.
Same certificate as the 2 other versions checked

Store checks and file details

Developer signature verified Jul 24, 2026
Validated against Google Play Jul 24, 2026
Signed by[email protected], OU=product, O=qtrun.com, L=Beijing, ST=Beijing, C=CN
Signing certificate (SHA-1)07:FB:2C:FC:CB:9C:30:44:27:ED:39:9B:E9:10:AD:57:EF:EE:5E:44
File MD57b6a978fea217ba56cb90c1c41878242
Uploaded by “appupdater” Gold tier · 117,810 followers · uploading since 2020

Scans and ratings come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures (2 other versions compared). AAPKs doesn't scan files itself — compare the MD5 and signer after downloading.

Permissions (11)

Network Signal Guru requests 11 permissions, 3 of them sensitive.

Approximate location Sensitive android.permission.ACCESS_COARSE_LOCATION
Precise location Sensitive android.permission.ACCESS_FINE_LOCATION
Read phone status and identity Sensitive android.permission.READ_PHONE_STATE
Foreground service location android.permission.FOREGROUND_SERVICE_LOCATION
Full network access android.permission.INTERNET
In-app purchases (Google Play Billing) com.android.vending.BILLING
Internal broadcast protection (app-defined) com.qtrun.QuickTest.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
Run foreground services android.permission.FOREGROUND_SERVICE
Show notifications android.permission.POST_NOTIFICATIONS
View Wi-Fi connections android.permission.ACCESS_WIFI_STATE
View network connections android.permission.ACCESS_NETWORK_STATE

Required hardware & features

Basic touch input android.hardware.faketouch
Portrait screen android.hardware.screen.portrait

Network Signal Guru APK: questions and answers

Is there a version of Network Signal Guru for older Android phones?

The current version needs Android 6.0 or later. Version 4.1.1 is the newest listed build that installs on Android 4.1 and later. Get version 4.1.1 · All versions

Can I install this APK over the version I already have?

Yes, if your installed copy is older. It is signed like the Google Play version, so Android installs it as an update and keeps your data.

Is Network Signal Guru free?

The APK is free to download, but the app offers in-app purchases through Google Play.

Is the Network Signal Guru APK safe?

No one can promise that a file is safe, but some things can be checked. The source store rates this file Trusted. Its signature matches the Google Play version. It is signed with the same certificate as the 2 other versions checked. After downloading, check that the file's MD5 is 7b6a978fea217ba56cb90c1c41878242.