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Why a difference in voice signal dbm reading from apps vs Android

Discussion in 'Android Devices' started by loumalnati, Dec 6, 2013.

  1. loumalnati

    loumalnati Member
    Thread Starter

    I loaded a few apps on my phone to read voice signal. Both apps are pretty consistent in that the voice signal is good at an average of -85 dBm. However, if I go to Settings/More/About Device/Status it always shows about -100dBm for signal strength. Why is there such a discrepancy and who should I believe ?
     



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  2. Rukbat

    Rukbat Extreme Android User

    Are you comparing 2G signal strength to 2G signal strength? Or is one of them reading 3G/4G? Or is one of them reading signal quality?

    The only device you should believe is the calibrated one in the lab that's reading the signal strength with a fixed signal being fed into the phone by a calibrated signal generator. Apps and readings on the phone are to give you an approximate idea of how the phone is performing relative to past performance of that same phone, using the same measurement method (IOW the same app or the same screen on the phone). I wouldn't even bet on the impedance of the phone's antenna, which changes the perceived signal strength, and varies greatly with surrounding objects (including your hands).
     

Samsung Galaxy S3 Forum

The Samsung Galaxy S3 release date was May 2012. Features and Specs include a 4.8" inch screen, 8MP camera, 1GB RAM, Exynos 4412 Quad processor, and 2100mAh battery.

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