Signal Strength


Signal Strength

If you are living or working in a low signal area then this app will be especially useful. You will be able to find the best corners of your office or home where good signal strength is available

The Cellular and WiFi signal varies in orders of 1000s (The full range is actually more than a million times) which is difficult to appreciate and hence the unit called dBm is used which presents the data in a nice logarithmic manner


Some Issues

Important – Try the free version before you unlock the pro features. There is a known issue of signal refresh with some phones and not a limitation of the app. Some phones/ROMs particularly a few Samsung stock ROMs dont seem to be supporting cellular signal strength update. Feedback by email would be appreciated

LTE Neighboring Cells. If your phone does not implement the Android standard correctly then the neighboring LTE cells are not displayed

Widget freezes. Some devices with customized ROMs always show -113 or -140 dBm. This is not a problem with the app. These ROMs are not supporting signal refresh for third party apps. If you are finding that network type and operator are updating but not signal strength then this is a sure sign of a broken ROM.

LTE Signal Strength. LTE is being implemented in subtle variations by various OEMs and Carriers away from the Android standard and hence some devices will not show the information correctly. Please contribute debug reports from App Navigation Menu | Support | Report Bugs so that all variations can be incorporated

Dual SIM. Dual SIM info is available for Android Lollipop 5.1 onwards. This info is prone to errors since manufacturers have not yet correctly implemented the new functions. Use the Health button to check functionality. Please also send me a debug report from the app to explore a workaround

Widget. If you cannot see the widgets in the list of widgets just try this. Open the list of widgets and change the orientation of your device. This will definitely refresh the list of widgets. Also do not move the app to SDCard since Android does not work well with widgets installed in SDCard. As a last resort force close the launcher app from Android Settings | Apps | All


Unlocked Version

The app is completely free except for Adfree which can be unlocked through the Play Store

If you want to reinstall the app only choose that account from which you bought the unlock option. Then you can reinstall and adfree will be available. This is really relevant when you have multiple accounts in your phone.


Usable ranges

WiFi -95dBm to -35dBm

GSM -113dBm to -51dBm

CDMA -100dBm to -75dBm

EVDO -105dBm to -65dBm

LTE -140dBm to -44dBm


Cellular Networks

2G – GPRS,EDGE,CDMA,IDEN

3G – HSPA,HSUPA,HSDPA,EHRPD,1XRTT,EVDO,UMTS,HSPA+

4G – LTE


LTE

LTE and EVDO are pure data channels. Your phone by default shows the signal strength of voice channels like cdma or gsm. Even if you are on a LTE/EVDO network for voice the phone uses these voice channels. Using the signal meter and widgets you can see the individual networks like EVDO, CDMA, LTE, GSM. If you are on a Voice over LTE operator then LTE carries both Voice and Data.

LTE is being implemented in subtle variations by various OEMs and Carriers away from the Android standard. Please contribute debug reports from App Navigation Menu | Support | Report Bugs so that all variations can be incorporated in the App


Network Technologies

GSM – Global System for Mobile Communications

CDMA – Code Division Multiple Access

EDGE – Enhanced Data GSM Environment

HSPA – High Speed Packet Access

HSUPA – High Speed Uplink Packet Access

HSDPA – High Speed Downlink Packet Access

EHRPD – Evolved High Rate Packet Data

1xRTT – CDMA Data Mode

EVDO – Evolution Data Optimized

UMTS – Universal Mobile Telecommunications System

HSPA+ – Evolved HSPA

LTE – Long Term Evolution


Other Terms

CDMA/EVDO Ec/Io – This is a measure of the quality of your CDMA/EVDO channel. This is more important than the corresponding CDMA/EVDO strength or RSSI channel

LTE RSRP – Reference Signal Received Power. This is the main measurement in LTE channels and indicates the average strength of the reference signal

LTE RSRQ – Reference Signal Received Quality. This indicates the quality of the LTE signal

Note – If you get good strength but poor quality then connection will also be poor. Conversely if you get poor strength but good quality then your connection is likely to still be good