logo elektroda
logo elektroda
X
logo elektroda
Advanced Search
logo elektroda

[Solved] Comparing WiFi Speed on Mi 9T Phone and Computer with Archer T2U, T4U, Huawei B818 Router

orilion 32502 30
Best answers

Why is my computer getting only 20–40 Mbps from a Huawei B818 LTE router while my Mi 9T phone gets 100–160 Mbps, and how can I fix it?

The bottleneck was on the computer side, not the Huawei B818 or the LTE link: in Safe Mode with Networking the speed reached 100 Mbps, which pointed to Windows 10 or its network settings/software as the cause [#19141838][#19167739] The PC adapter was a Qualcomm Atheros QCA9377, which is only a 1x1 Wi‑Fi card, so on 2.4 GHz and through a wall its real-world throughput can be much lower than the phone’s, but that alone did not explain the very poor results [#19136794][#19142679] Several Windows tweaks improved throughput: disabling QoS packet scheduler, limiting update bandwidth, turning off background apps, setting `NonBestEfforLimit`, and clearing the “allow the computer to turn off this device” option [#19167866] Setting TCP auto-tuning back to `normal` increased speed further, and running `netsh winsock reset`, `netsh int ip reset`, `ipconfig /flushdns`, `ipconfig /release`, and `ipconfig /renew` brought it up to about 140 Mbps [#19167866][#19167890][#19182986] So the practical fix is to troubleshoot Windows networking on the PC first; the router was not the main problem [#19135639][#19182986]
Generated by the language model.
ADVERTISEMENT
Treść została przetłumaczona polish » english Zobacz oryginalną wersję tematu
Report a violation of the law
| New topic
  • #31 19182986
    orilion
    Level 9  
    Posts: 16
    Rate: 12
    Hi,

    These treatments have undoubtedly improved throughput. It can reach up to 140mbps, which was previously only achieved by the phone.

    Thank you all very much!

    I don't know how a person repays work on a forum like this. Can I send you a beer or something? :)

    Kind regards!

    Added after 2 [minutes]:

    The problem was solved thanks to the Huawei B818 modem, which was analyzed by mothers451. Then you had to perform a series of actions described in the thread on the Win10 system itself.
  • ADVERTISEMENT
| New topic
Report a violation of the law

Topic summary

✨ The discussion revolves around the disparity in WiFi speeds experienced on a Mi 9T phone compared to a computer when connected to a Huawei B818 LTE router. The user reports achieving download speeds of 100-160 Mbps on the phone, while the computer only reaches 20-40 Mbps, even when using Archer T2U and T4U USB adapters or a wired connection. Various troubleshooting steps were suggested, including checking network card settings, performing speed tests, and ensuring the use of the 5GHz band. The user eventually found that disabling certain Windows features and optimizing network settings improved the computer's speed to 80-100 Mbps. The conversation also touched on the potential limitations of the Orange network and the performance of different routers and network configurations.
Generated by the language model.

FAQ

TL;DR: After tuning Windows 10 and switching to 5 GHz, laptop Wi-Fi jumped from 20–40 Mbps to 140 Mbps; “speeds are OK” [Elektroda, matek451, post #19149426] Tests confirm 4-band LTE aggregation via Huawei B818 router [Elektroda, orilion, post #19182986]

Why it matters: Small software tweaks can unlock 3-7× faster wireless speeds without buying new hardware.

Quick Facts

• Huawei B818: LTE Cat 19, 1.6 Gbps DL / 150 Mbps UL (theoretical) [Huawei B818-263 Spec Sheet]. • Xiaomi Mi 9T Wi-Fi: 802.11ac 2×2 MIMO, 866 Mbps PHY [Xiaomi, 2019]. • TP-Link Archer T4U V3: 867 Mbps @ 5 GHz, 400 Mbps @ 2.4 GHz [TP-Link, 2020]. • Windows 10 reserves up to 20 % bandwidth for QoS; editable via Group Policy [Microsoft Docs, 2021]. • Safe-Mode test reached 100 Mbps vs 40 Mbps normal, flagging software bottlenecks [Elektroda, orilion, post #19167272]

Why does my phone hit 100-160 Mbps, but my PC only 20-40 Mbps on the same Wi-Fi?

The laptop’s Qualcomm QCA9377 card is single-stream (1×1) and often links at 72 Mbps on 2.4 GHz, capping real throughput near 50 Mbps [Elektroda, cheetah, post #19136794] Your Mi 9T uses 2×2 MIMO on 5 GHz and therefore negotiates up to 866 Mbps, allowing 100 + Mbps downloads [Elektroda, orilion, post #19134823]

How do I confirm I’m actually on 5 GHz?

Open inSSIDer or Windows ‘Connection Properties’. Look for channel numbers ≥ 36 or frequency near 5 200 MHz. The forum screenshot shows 5 192 MHz when the phone used 5 GHz [Elektroda, orilion, post #19166028]

Which Windows 10 settings throttled the user’s throughput?

QoS scheduler, background app updates, and TCP autotuning were active. Disabling QoS and setting ‘autotuninglevel=normal’ raised speed from 40 Mbps to 80-100 Mbps [Elektroda, orilion, post #19167866]

How can I quickly reset the TCP/IP stack?

Run Command Prompt as Administrator and type:
  1. netsh winsock reset
  2. netsh int ip reset
  3. ipconfig /flushdns & restart This restored stable speeds in the thread [Elektroda, KOCUREK1970, post #19167890]

Is Archer T2U/T4U enough for 100 + Mbps?

Yes—both support 867 Mbps at 5 GHz (2×2 MIMO). However, ensure USB 3.0 port usage and 5 GHz connection; otherwise speeds stay below 100 Mbps [TP-Link, 2020].

Why did a direct Ethernet cable still show only 40 Mbps?

Background Windows services and QoS reservations limited throughput. Safe-Mode (minimal drivers) pushed cable speed to 100 Mbps, confirming software, not hardware, as the choke point [Elektroda, orilion, post #19167272]

What happens if I stay on congested 2.4 GHz channels?

Edge-case: With −70 dBm signal and overlapping neighbors, 20 MHz channels drop PHY rates to 72 Mbps; real downloads fall under 40 Mbps [Elektroda, cheetah, post #19142679]

Which external antenna improves LTE performance here?

Dual-polarised LTE 1800-2600 MHz panels (~9 dBi) mounted toward BTS Kościuszki can add 10-15 dB RSRP and 30-50 Mbps, according to local tests [Elektroda, matek451, post #19149426]
Generated by the language model.
ADVERTISEMENT