WWAN Helper Tool

Web Serial API - Browser-based LTE/5G Modem Configuration

Web Serial API Not Supported

Please use Chrome or Edge browser.

Or use PowerShell version below.

Not Connected
Modem Info
Band Info
APN Settings
Diagnostics
AT Log

Modem Information

Manufacturer: - Model: - Firmware: - IMEI: - SIM Status: - Vendor Type: -
Auto Refresh
--
Waiting for connection...
MCC/MNC: --/--
Current Connection
Current Band
--
EARFCN
--
Bandwidth
--
Technology
--
Operator Available Bands
--

Signal Quality

Excellent Good Fair Poor
RSRP ?
📶 RSRP (Reference Signal Received Power)
Measures the power of LTE reference signals. The most important indicator for coverage and signal strength.
≥ -80 dBm: Excellent
≥ -90 dBm: Good
≥ -100 dBm: Fair
< -100 dBm: Poor
--
-- dBm
-140 dBm ← → -44 dBm
RSRQ ?
📊 RSRQ (Reference Signal Received Quality)
Indicates signal quality and interference level. Combines RSRP with interference and noise for overall quality assessment.
≥ -10 dB: Excellent
≥ -15 dB: Good
≥ -20 dB: Fair
< -20 dB: Poor
--
-- dB
-20 dB ← → -3 dB
SINR ?
📈 SINR (Signal to Interference + Noise Ratio)
Ratio of signal power to interference and noise. Key indicator for data throughput - higher values mean faster speeds.
≥ 20 dB: Excellent
≥ 13 dB: Good
≥ 0 dB: Fair
< 0 dB: Poor
--
-- dB
-20 dB ← → +30 dB
RSSI ?
📡 RSSI (Received Signal Strength Indicator)
Total received power including signal, interference, and noise. Traditional signal strength indicator used across all wireless technologies.
≥ -65 dBm: Excellent
≥ -75 dBm: Good
≥ -85 dBm: Fair
< -85 dBm: Poor
--
-- dBm
-110 dBm ← → -50 dBm
Overall Signal Quality
--
Connect to modem to see signal quality

Cell Information

Cell ID
--
PCI
--
TAC
--
MCC / MNC
-- / --
Operator
--
CA State
--

Cell Tower Location

Raw AT Response
--

Current APN

-

Change APN

(1=default, 2-16=additional)
Note: Some carriers may require a reboot after changing APN settings.

Network Status

Registration: - Signal: - Operator: - Access Tech: -
Note: IP address and metric settings require the PowerShell version (OS-level access not available in browser)

AT Command Log

Waiting for connection...

PowerShell Version (Full Features)

For metric adjustment and full OS integration, use PowerShell: