How do I check my signal strength?
Dial *3001#12345#* and press the Call button. This will launch the Field Test Mode app and where the bars/dots were in the top left corner of the screen, you'll now see a negative number. The negative number is the decibel signal strength reading and should be followed by the carrier name and then the network type.
Android also covers a large swath of very strong signal with just the highest bar indicator. In case you're not familiar, signal is usually measured in dBm. dBm is the power ratio in decibels of the radio power per one milliwatt. A signal of -60dBm is nearly perfect, and -112dBm is call-dropping bad.
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- Method 2 Taking Easy Action
- Keep your phone away from other electronic devices that might interfere with your reception. These include laptops, iPads, microwaves and other electronics.
- Try to keep your battery charged to 2 bars or higher.
- Hold your phone correctly.
- Use Wi-Fi as your cell phone signal.
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SINR/SNR – The signal-to-noise ratio of the given signal. RSRP – The average power received from a single Reference signal, and Its typical range is around -44dbm (good) to -140dbm(bad). RSRQ – Indicates quality of the received signal, and its range is typically -19.5dB(bad) to -3dB (good).
- RSSI is a Radio-Frequency (RF) term and stands for Received Signal Strength Indicator. It is a measure of the power level that an RF device, such as WiFi or 3G client, is receiving from the radio infrastructure at a given location and time. For LTE: In short, the RSRP/RSRQ are the relevant ones for LTE performance.
- RSRQ is the short form of Reference Signal Received Quality and it is equivalent to UMTS CPICH Ec/Io. Both LTE RSRP and LTE RSRQ parameters are used for cell selection, cell re-selection and handover. RSRP is also used to estimate the path loss for power control calculations.
- SINR/SNR – The signal-to-noise ratio of the given signal. RSRP – The average power received from a single Reference signal, and Its typical range is around -44dbm (good) to -140dbm(bad). RSRQ – Indicates quality of the received signal, and its range is typically -19.5dB(bad) to -3dB (good).
The 4G LTE Signal should be greater than -58 dBm (e.g. -32 dBm). A value of -96 dBm indicates no signal. If the signal is between -82 dBm and -96 dBm, move the device to an alternate location (preferably an outdoor location). The LTE SINR should be greater than 12.5.
- In telecommunications, particularly in radio frequency, signal strength (also referred to as field strength) refers to the transmitter power output as received by a reference antenna at a distance from the transmitting antenna.
- Example of decibels
DECIBEL SOUND EXAMPLE 60 Audible Sound of human voice, machinery 70 Irritating Television set on loud, vacuum cleaner, several people on the telephone 75 Constant sound Busy restaurant around lunchtime 80 Unpleasant Alarm clock, freight traffic, doorbell
- Comparitive Examples of Noise Levels
Noise Source Decibel Level Passenger car at 65 mph at 25 ft (77 dB); freeway at 50 ft from pavement edge 10 a.m. (76 dB). Living room music (76 dB); radio or TV-audio, vacuum cleaner (70 dB). 70 Conversation in restaurant, office, background music, Air conditioning unit at 100 feet. 60
Updated: 16th August 2018