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

Dual SIM. Android only permits getting the Signal Strength from the Active SIM selected for Calls. This is a limitation for Dual SIM phones. Also Do Not keep Prefered SIM settings to “Ask” in Dual SIM phones else nothing will be reported.

Signal Updates. 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

Cell Towers. If your phone does not implement the Android standard correctly then the Cell tower info is not displayed

LTE. LTE info is being implemented in subtle variations by various OEMs and Carriers away from the Android reporting 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


Unlocked Version

The app is completely free except for Adfree which can be unlocked through the Play Store. Try the free version first before you unlock the pro features.

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.


Signal 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. 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