![]() ![]() Select LTE from the list and then click on "Serving Cell Meas".Press call and you will see the Field Test menu.After you've done this, open the Phone app and insert the following, exactly as you see it: *3001#12345#*.Open the Control Center (or go the Settings app).Note that it may not work on every phone however. The Field Test menu has had some variations on each iPhone version nevertheless, this mini-guide should work on most iOS systems. How to Find Precise dBm Readings on Your iPhone We have an entire article on Field Test Mode, but here is a basic overview of how to check your signal strength straight from your phone. The field test method will differ depending on your operating system. Field Test Mode - Get Reliable Signal Readings Without an App> It's available in both the Mac App Store and Android's Play Store. It can give you dBm readings and shows cell performance on a map. RootMetrics uses user information by testing network performance when consumers use their mobile phones. dBm and antenna or tower location is shown along with the tower’s individual connection strength. This app shows a summary of your mobile network as well as current coverage and signal strength in percentage. Open Signal is available in App Store (Mac) and Android's Play Store. OpenSignal has several maps with information about the coverage of various networks including 3G, 4G (LTE) and 5G. It also shows RSSNR (Reference Signal to Noise Ratio) which measures the noise of the mobile line in dB. Green is good, red or white show connectivity problems. The color-coded map indicates sent and received signal. Network Cell Info covers all cellular networks including LTE, HSPA +, HSPA, WCDMA, EDGE, GSM, CDMA, EVDO. Unfortunately, this one is only compatible with Android. It measures dB level and your nearest cell tower. This app has a band identifier, automated visual logger, advanced LTE, 4G, 5G, CDMA data analyzer, among other features. ![]() Best Apps to Find your Signal Strength for Android and iPhone 1. We'll start with the top 5 smartphone apps, and explain field test mode later. There are two main ways to check cell signal strength: the field test method and cell signal apps. -100 to -80 means your signal is below average. ![]()
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