You turned on the access point on your smartphone, connected your laptop - but the pages take forever to load, the video slows down, and the speed is Speedtest shows pathetic 2-5 Mbit/s instead of those promised by the operator 50+ Mbit/s. Is the situation familiar? The problem of low speed when distributing the Internet from a phone to a laptop occurs in 7 out of 10 users, and there may be a dozen reasons for this - from banal tariff restrictions to hidden operating system settings.

In this article we will look at all possible reasons for a drop in speed, including those that are not written about in standard instructions (for example, the influence Band Steering on Android 12+ or hidden limits Fair Usage Policy from operators). You will receive not only a checklist for diagnostics, but also specific solutions - from changing parameters MTU before bypassing provider restrictions through VPN. Let's start with the most obvious, but often ignored.

1. Checking the real mobile Internet speed (before distribution)

Before blaming your phone or laptop, make sure that the problem is not on the operator's side. 90% of complaints about slow distribution due to the fact that users do not test speed directly on the phone - but in vain. Here's how to do it right:

  • 📱 Disable the access point on your phone (turn off modem mode).
  • 🌐 Launch Speedtest (or nPerf) on the smartphone itself via a mobile network (not Wi-Fi!).
  • 📊 Compare the results with those stated in the tariff. If the speed is lower by 30% or more — the operator has a problem (see section 3).
  • 🔄 Repeat the test in different places (for example, near a window or on a balcony) - signal 4G/5G can vary greatly even within the same room.

Critical point: if the phone speed above 20 Mbit/s, and when distributed it drops to 1-3 Mbit/s - it’s not the operator’s fault, but the settings of the access point or laptop. If the speed on your phone is also slow, skip to the section on tariffs and coverage.

📊 What operator is on your phone?
  • MTS
  • Beeline
  • MegaFon
  • Tele2
  • Yota
  • Other

2. Tariff restrictions: Fair Usage Policy and throttling

Even if your tariff promises “unlimited Internet,” this does not mean that the speed will always be maximum. Most operators use Fair Usage Policy (FUP) - hidden traffic limits, after exceeding which the speed is artificially reduced. For example:

Operator FUP limit (GB/month) Speed after limit Note
MTS 150–300 up to 1 Mbit/s Depends on the tariff
Beeline 100–200 up to 0.5 Mbit/s Throttling from 18:00 to 24:00
MegaFon 200+ up to 3 Mbit/s The limit resets at 00:00
Tele2 50–100 up to 0.25 Mbit/s The most stringent restrictions

How to check if you are under FUP:

  1. Open your operator’s personal account or mobile application.
  2. Find the "Details" or "Bandwidth Usage" sections.
  3. Compare the traffic consumed with your tariff limit (specified in the contract).
⚠️ Attention: Some operators (for example, Yota) throttle the speed when distributing the Internet even if FUP is not exhausted. This is spelled out in the fine print of the contract as a “modem mode limitation.”

Solutions:

  • 🔄 Reset your traffic counter (if there are few days left until the end of the month, wait for the automatic reset).
  • 💳 Buy an additional traffic package (sometimes cheaper than waiting).
  • 🌍 Use a VPN (some operators do not count traffic through VPN in FUP limits).

3. Non-optimal access point settings on the phone

By default, smartphones (Android And iOS) are set to “universal” distribution parameters, which rarely give the maximum speed. Here's what you need to check and change:

☑️ Access point optimization

Done: 0 / 5

For Android:

Go to Settings → Wireless & networks → Access point and tethering → Access point setup and change:

  • 📶 Frequency range: select 5 GHz (if the laptop supports it). On 2.4 GHz the speed is always lower due to channel congestion.
  • 🔄 Channel width: install 40 MHz (the default is often 20 MHz, which limits the speed to 72 Mbps).
  • 🔒 Security Type: select WPA3 (if available) or WPA2/AES (don't use deprecated WPA/TKIP).
  • 📡 Channel: manually select the least loaded one (use the app WiFi Analyzer for analysis).

For iPhone:

On iOS There are fewer settings, but there are important nuances:

  1. Open Settings → Modem mode.
  2. Enable the option "Maximum compatibility" (if the laptop is old).
  3. Disable "Low power consumption" - it limits the distribution speed.
  4. Check what's in Settings → Cellular → Data options → Voice & data selected 4G (or 5G), not 3G.
⚠️ Attention: On Android 10+ there is a bug: when enabled traffic saving mode (in the SIM card settings) the distribution speed drops by 5–10 times, even if saving is disabled in the main settings.

4. Problems with drivers and Wi-Fi settings on a laptop

If the phone distributes the Internet normally, but the laptop cannot handle the speed, the network card drivers or Windows/macOS settings are to blame. Let's start with diagnostics:

For Windows:

  1. Click Win + X → Device Manager.
  2. Expand the tab "Network adapters".
  3. Find yours Wi-Fi adapter (For example, Intel Wi-Fi 6 AX200 or Qualcomm Atheros).
  4. Right click → Properties → Driver → check the version.

If the driver is older than 2022, update it manually from the manufacturer’s website (not through Windows Update!). For popular adapters:

Critical setting for Windows 10/11: disable bandwidth limiting:

  1. Open Control Panel → Network and Sharing Center → Change adapter settings.
  2. Right click on your Wi-Fi → Properties.
  3. Click Customize → tab "Additional".
  4. Find the parameter «802.11n/ac Wireless Mode» or «Bandwidth» and install «Auto» or «40 MHz».

For macOS: reset network settings:

sudo ifconfig en0 down

sudo ifconfig en0 up


networksetup -setairportpower en0 off


networksetup -setairportpower en0 on

💡

If your laptop connects to an access point, but the speed freezes every 5–10 seconds, disable the “Green Ethernet” or “Energy Efficient Ethernet” parameter in the adapter settings.

5. External interference and physical limitations

Even a perfectly configured access point will slow down if the signal is blocked by walls, furniture or other devices. Here's what affects speed:

  • 📶 Distance: Every 10 meters from phone to laptop reduce speed by 30–50% (at 5 GHz the effect is stronger).
  • 🧱 Obstacles: Concrete wall reduces signal by 70%, wooden door - on 20%.
  • 📡 Interference from other devices: Microwaves, wireless mice, CCTV cameras operate on the frequency 2.4 GHz and “clog” the channel.
  • 🔋 Phone charge: When the battery level is lower 20% Many smartphones automatically reduce Wi-Fi transmission power.

How to improve the signal:

  1. Place the phone closer to the laptop (ideally on the same surface).
  2. Use external antenna (For example, TP-Link TL-ANT2406A) for phones with support OTG.
  3. Switch to 5 GHz, if the laptop supports it (less interference, but worse penetration through walls).
  4. Disable on your phone Bluetooth And NFC - they interfere with Wi-Fi.
How to check the congestion of Wi-Fi channels?

Install the application on your phone WiFi Analyzer (Android) or NetSpot (iOS). Start scanning - green columns show free channels, red columns show loaded ones. Select the channel with the least load in the access point settings.

6. Software conflicts: VPN, firewalls and antiviruses

If the speed drops only when distributing from a phone, but not when connecting to a regular router, the software on the laptop or phone is to blame. The main culprits:

Program Problem Solution
VPN (NordVPN, ProtonVPN) Traffic encryption eats up to 40% of speed Disable VPN or select a protocol WireGuard
Antiviruses (Kaspersky, Avast) Real-time traffic scanning Add the network adapter to exceptions
Windows Firewall Blocks packets when distributed from a phone Temporarily disable or add a rule for svchost.exe
Torrent clients (uTorrent, qBittorrent) Occupy all bandwidth Limit download speed in settings

How to diagnose:

  1. Disable on laptop all programsexcept the browser.
  2. Run Speedtest — if the speed increases, the software is to blame.
  3. Turn on the programs one by one, testing the speed after each step.

For Android-phones: some applications (for example, Freedom VPN or 1.1.1.1) intercept traffic even in the background. Check section Settings → Applications → Accessibility → VPN and disable unnecessary services.

💡

If the speed drops precisely when downloading files (and not when watching videos), it’s your fault MTU. Reduce its value to 1400 in the access point settings (Android) or through the command netsh interface ipv4 set subinterface "Wireless network" mtu=1400 store=persistent (Windows).

7. Phone or laptop hardware limitations

If you've tried everything, but the speed is still low, your devices may not be physically capable of more. Here are the hardware limits:

  • 📱 Phone:
    • Old smartphones (eg. Samsung Galaxy S7 or iPhone 6) distribute Wi-Fi at speeds up to 30 Mbit/s even with 4G 100+ Mbps.
    • Budget models (for example, Redmi 9A) often have single-band Wi-Fi (2.4 GHz only).
  • 🖥️ Laptop:
    • Adapters Wi-Fi 4 (802.11n) limited 150 Mbit/s (actually - 50–70 Mbit/s).
    • Laptops before 2015 (for example, Lenovo ThinkPad T440) often have weak antennas.

How to check:

  1. On the phone: find the model in GSMArena and look at the section «Comms» (For example, page Galaxy S21). Look for lines «Wi-Fi direct» And «Hotspot».
  2. On a laptop: in Device Manager look at the Wi-Fi adapter model and check its specifications on the manufacturer's website.

Solutions:

  • 🔄 For phone: use USB cable instead of Wi-Fi (the speed will be higher, but the phone will quickly run out).
  • 🖥️ For laptop: buy external Wi-Fi adapter (For example, TP-Link Archer T3U with support Wi-Fi 6).
  • 📶 Alternative: distribute internet via Bluetooth PAN (slower than Wi-Fi, but more stable with interference).

8. Alternative methods of Internet distribution

If Wi-Fi is stubbornly slow, try other connection methods. Here's a comparison of speed and reliability:

Method Max. speed Pros Cons
Wi-Fi Hotspot up to 866 Mbps (Wi-Fi 5) Convenient, no wires Sensitive to interference
USB cable up to 1 Gbit/s (USB 3.0) More stable Wi-Fi, less lags The phone runs out quickly
Bluetooth PAN up to 25 Mbit/s Low power consumption Very slow for modern tasks
Reverse Tethering (ADB) up to 500 Mbit/s Bypasses operator restrictions Difficult to set up, requires PC

How to share the Internet via USB (Android):

  1. Connect your phone to your laptop original cable (cheap cables often do not support data transfer).
  2. On the phone: Settings → Wireless & networks → Hotspot and tethering → USB tethering.
  3. On a laptop: wait until the drivers are installed (if they are not installed, download Google USB Driver).

Reverse Tethering (advanced method):

If the operator blocks the distribution, you can “deceive” the system by forcing the phone to use the laptop’s Internet as a gateway. To do this:

adb tcpip 5555

adb connect [IP_телефона]:5555


adb shell settings put global tether_dun_required 0


netsh interface portproxy add v4tov4 listenport=8080 connectport=80 connectaddress=[IP_телефона]

⚠️ This method requires root rights on Android and may violate the terms of the contract with the operator.

FAQ: Frequently asked questions about slow Internet distribution

❓ Why is the upload speed on iPhone lower than on Android?

Apple artificially limits the upload speed iPhone to 30–50 Mbit/s (even if 4G shows 100+ Mbps). This is done to save battery power. The restriction can only be bypassed through USB modem or jailbreak.

❓ Can the antivirus on your phone affect the distribution speed?

Yes. Antiviruses like Avast or Dr.Web scan all traffic, passing through the access point, which eats up to 40% speed. Disable the Network Protection feature in your antivirus settings.

❓ Why does the speed drop in the evening?

This is due to base station overload operator. In the evening (from 18:00 to 23:00) the number of users increases by 3–5 times, and the bandwidth is divided among everyone. Solution: use VPN with servers in less congested regions (for example, ProtonVPN with servers in Europe).

❓ How to check if someone else is stealing traffic?

On Android install Fing or NetGuard - they will show all devices connected to your access point. On iPhone this is more difficult to do (you need jailbreak), but you can see the list of connected devices in Settings → Modem mode.

❓ Does changing operator help?

Sometimes. For example, Tele2 And Yota often throttle the speed during distribution, and MegaFon And MTS - less often. Before changing operator, check reviews about Internet distribution on forums (for example, 4PDA).