Not sure whether your 4G or 5G signal is strong enough for a reliable internet connection? Our free 4G and 5G Signal Reading Interpreter helps you understand the signal measurements reported by your mobile phone, SIM-based router, or 4G/5G modem.
Enter your RSRP, RSRQ, SINR, or RSSI values to see what each reading means. The tool provides an indicative signal assessment and practical suggestions for identifying weak reception or poor radio quality.
The tool interprets measurements you enter manually. It does not automatically access your phone’s cellular signal, detect nearby towers, check network coverage, or measure internet speed.
Understand your 4G or 5G signal readings
Enter the measurements shown by your phone or cellular router. Get a separate interpretation of signal power, radio quality, and interference.
Select 5G only if the readings are identified as NR/5G by your device. A 5G NSA connection can also show LTE anchor values.
Enter any values you have, including just one. RSRP, RSRQ, or SINR is needed for a quality assessment; RSSI alone is not enough. These readings are not internet-speed results.
What to try next
Indicative vendor-style guidance, not a standardised score, coverage confirmation or speed prediction. Network bands, devices, load and deployment can change the practical outcome. Recheck a few times under similar conditions.
How to find these readings
Look in your mobile router's cellular status page or your phone's network diagnostics, if available. Menu names and available measurements vary by manufacturer. For 5G, confirm whether a displayed value refers to the NR radio or the LTE anchor.
Approximate reference bands and measurement notes
| Metric | Excellent | Good | Fair | Poor |
|---|---|---|---|---|
| RSRP (dBm) | ≥ −80 | −90 to < −80 | > −100 to < −90 | ≤ −100 |
| RSRQ (dB) | ≥ −10 | > −15 to < −10 | > −20 to ≤ −15 | ≤ −20 |
| SINR (dB) | ≥ 20 | 13 to < 20 | 0 to < 13 | < 0 |
| RSSI (dBm) | Not rated alone. Depends on bandwidth and other received signals. | |||
Ranges are approximate diagnostic heuristics adapted from equipment-vendor guidance, not official 3GPP quality grades or guarantees. For 5G NR, use NR-reported SS-RSRP, SS-RSRQ and SS-SINR where available; LTE values measure different reference signals.
Technical references: Teltonika RSRP/RSRQ guide · Cisco cellular signal checks · ETSI / 3GPP NR measurement definitions
How to Use the 4G and 5G Signal Interpreter
You only need the signal measurements reported by your device.
- Select your network type. Choose 4G LTE or 5G NR. Select 5G only when your device identifies the readings as NR measurements.
- Find your signal readings. Open your phone’s cellular diagnostics or your 4G/5G router’s network status page. Look for RSRP, RSRQ, SINR, or RSSI.
- Enter the available values. Use dBm for RSRP and RSSI, and dB for RSRQ and SINR. You can leave unavailable fields empty.
- Click Interpret my readings. The tool evaluates each entered measurement and explains its indicative quality.
- Review the recommendations. Compare the readings at different locations or times if you are experiencing connectivity problems.
For a more useful interpretation, enter RSRP together with RSRQ or SINR. RSSI alone cannot reliably describe cellular connection quality.
Understanding 4G and 5G Signal Measurements
Your phone’s signal bars provide only a simplified view of cellular reception. More detailed measurements can help explain why mobile data is slow or unstable even when the signal indicator looks strong.
| Measurement | What it tells you | Unit |
|---|---|---|
| RSRP | Strength of the received reference signal | dBm |
| RSRQ | Quality of the reference signal relative to received power | dB |
| SINR | Relationship between the useful signal and interference plus noise | dB |
| RSSI | Total received radio power within the measured bandwidth | dBm |
RSRP: Reference Signal Received Power
RSRP measures received reference-signal power. It is one of the most useful measurements when checking whether a mobile device has adequate cellular reception.
RSRP is normally expressed as a negative number in dBm. A less negative reading generally indicates stronger reception.
For example, −85 dBm indicates stronger received reference-signal power than −105 dBm.
However, strong RSRP does not guarantee fast internet. A connection may still experience poor performance because of interference, cell loading, or other network conditions.
RSRQ: Reference Signal Received Quality
RSRQ provides information about radio quality by relating reference-signal power to total received power within the measurement bandwidth.
A favorable RSRQ value generally suggests better radio conditions. A poor value can indicate that the connection deserves closer investigation.
RSRQ should be considered alongside RSRP, rather than treated as an independent speed measurement. It does not identify the precise cause of a problem on its own.
SINR: Signal-to-Interference-plus-Noise Ratio
SINR compares the useful signal against interference and background noise.
A higher SINR generally indicates a cleaner radio connection. A low or negative SINR value can make reliable data transmission more difficult.
For example, a device may receive sufficient signal power but experience a poor SINR because of interference. Moving the device slightly or changing its position may produce a more favorable reading.
RSSI: Received Signal Strength Indicator
RSSI represents total received power over the relevant measurement bandwidth, which can include other radio signals, interference, and noise.
Unlike RSRP, RSSI does not isolate the reference signal from the serving cell.
For this reason, the interpreter displays RSSI as supplementary information rather than giving it a standalone Excellent, Good, Fair, or Poor rating.
What Are Good 4G and 5G Signal Values?
The following examples illustrate how the interpreter approaches different measurements.
| Measurement | More favorable example | Reading needing attention |
|---|---|---|
| RSRP | −85 dBm | −105 dBm |
| RSRQ | −10 dB | −18 dB |
| SINR | +20 dB | −2 dB |
These examples are not universal network performance standards. The interpreter uses approximate diagnostic bands, with particular caution when applying them to 5G NR measurements.
Actual performance depends on the network technology, frequency band, device capabilities, radio environment, and traffic conditions.
Important: A good signal assessment is not a prediction of download speed, upload speed, ping, or network availability.
Example: Strong Signal but Slow Mobile Internet
Suppose your 4G router displays these readings:
| Metric | Example reading | Tool interpretation |
|---|---|---|
| RSRP | −85 dBm | Good |
| RSRQ | −18 dB | Fair |
| SINR | +2 dB | Fair |
In this hypothetical example, the received signal power appears usable, but the quality-related measurements are less favorable.
You might experience unstable speeds or slower-than-expected performance. However, these readings alone cannot prove that interference or network congestion is responsible.
The next useful step is to compare the measurements at another time or position and run a separate internet speed test.
How to Find Signal Readings on Your Phone or Router
On an Android Phone
Some Android devices show cellular signal information under Settings → About Phone → SIM Status or a similarly named menu.
The available measurements depend on the manufacturer, Android version, and mobile network. Basic signal strength may appear in dBm, while detailed RSRQ or SINR information may require additional device diagnostics.
On an iPhone
Cellular diagnostic information varies by iPhone model, iOS version, and carrier. Not every device exposes the same measurements through its user interface.
If detailed readings are unavailable, use a compatible cellular router’s diagnostic interface where possible.
On a 4G or 5G Router
Many cellular routers provide signal details through their administration dashboard.
Look for sections named Network Status, Cellular Information, Diagnostics, or Signal Details. The exact names and available metrics vary by manufacturer and firmware.
Do not confuse cellular signal readings with the Wi-Fi signal strength between your phone and router. These measure different parts of the connection.
4G LTE vs. 5G NR Signal Readings
Although 4G and 5G use related signal-quality concepts, their radio measurement definitions are not identical.
For 5G NR, devices may report SS-RSRP, SS-RSRQ, and SS-SINR, which relate to synchronization-signal measurements.
Some 5G Non-Standalone (NSA) connections also use an LTE anchor. In these cases, a device may show LTE readings alongside NR measurements.
Select the correct technology in the interpreter and avoid entering LTE anchor readings as if they were confirmed 5G NR measurements.
How to Improve Weak 4G or 5G Reception
If your readings suggest poor reception or radio quality, start with simple changes.
Try a different position. Moving a phone or cellular router closer to a window or away from thick walls may improve reception. Compare the measurements before and after moving it.
Keep your router in a suitable location. Avoid enclosed cabinets and excessive heat. Follow the manufacturer’s placement and ventilation instructions.
Compare different times. Measurements and internet performance can vary throughout the day. Repeating your checks can help distinguish persistent weak reception from temporary changes.
Check the actual internet performance. Signal quality and connection speed are related, but they are not the same measurement. Use a separate speed test to check download speed, upload speed, and latency.
Contact your mobile operator if the problem continues. Record the approximate location, time, network type, and relevant signal readings to help explain the issue.
Signal Quality vs. Internet Speed
A mobile signal reading describes aspects of the radio connection between your device and the cellular network. An internet speed test measures data-transfer performance between your device and a test server.
You can have strong received signal power and still experience slow internet if the radio quality is poor or another part of the connection is limiting performance.
For a fuller picture, use this interpreter alongside the NetTools Pakistan internet speed test. Compare results under similar conditions rather than drawing conclusions from a single reading.
About This Signal Interpretation Tool
The 4G and 5G Signal Reading Interpreter is a free educational utility provided by NetTools Pakistan for mobile internet users in Pakistan.
It evaluates manually entered measurements in your browser using indicative comparison rules. It does not scan your mobile network, access your SIM account, contact your mobile operator, or submit the readings to a signal-analysis API.
The results are diagnostic guidance, not a certification of network coverage or service quality.
NetTools Pakistan is an independent connectivity information website and is not an official tool of PTCL, PTA, or any mobile network operator.
Technical References
The measurement explanations are informed by ETSI TS 36.214 for LTE, ETSI TS 38.215 for 5G NR, and practical LTE measurement guidance from Teltonika Networks.
These references define or explain signal measurements. The interpreter’s Excellent, Good, Fair, and Poor labels are indicative categories, not official 3GPP service-quality guarantees.