Slow internet on smartphone Samsung It's annoying, especially when other devices on the network are working fine. The causes could be in the phone's settings, the router's settings, or external interference. In this article, we'll look into it. All possible ways to speed up Wi-Fi — from basic to advanced, taking into account firmware features One UI and hardware limitations of devices Galaxy.
It's important to understand: connection speed depends on the "router → phone → server" chain. If the problem lies with your ISP or network congestion, even ideal smartphone settings won't work wonders. But in 70% of cases, it's the culprit. suboptimal connection parameters, which can be fixed in 5-10 minutes. Let's start with diagnostics—it will help identify the weak link.
1. Diagnosing your current Wi-Fi speed
Before changing anything, measure your actual speed. Use apps. Speedtest by Ookla or Fast.com (from Netflix). Run the test under different conditions:
- 📱Near the router (1–2 meters)
- 🏠 In the room where you usually use your phone
- 🕒 At different times of the day (morning and evening)
Compare the results with your provider's tariff. If the speed is 30-50% lower, there is definitely a problem. Pay attention to ping (latency): Values above 100ms indicate an unstable connection, even if the megabits seem normal.
Critical indicators V Samsung:
- 🔄 Wi-Fi icon flashing or disappearing - connection problems
- ⚠️ An exclamation mark on the icon indicates limited network access.
- 📉 Sudden speed spikes when downloading files
⚠️ Attention: If the cable speed (on your PC) is also low, the problem lies with your ISP. Call support and request a line check. Phone settings won't help here.
2. Optimize Wi-Fi settings on your Samsung phone
Firmware One UI hides some options, but they can be activated. Open Settings → Connections → Wi-Fi and follow the steps:
☑️ Optimizing Wi-Fi on Samsung
Smart Wi-Fi mode (Settings → Connections → Wi-Fi → Advanced → Smart Wi-Fi) automatically switches between 2.4 GHz and 5 GHz. Disable it if your router doesn't support it. band steering - This may cause delays.
On the menu Additionally Also:
- 🔄 Turn it off
Automatic connection- the phone can cling to weak networks - 📡 Turn on
Always look for networks, if you frequently move between access points - 🔒 Install
Network modeV 802.11 a/b/g/n/ac/ax (if available)
On Samsung phones with an Exynos chip (eg. Galaxy S22 Ultra Exynos) Forcing 5 GHz to be enabled may help: in the Wi-Fi settings, hold down the network name → “Network Management” → “Frequency Band” → select “5 GHz”.
3. Selecting the optimal channel and range on the router
Telephone Samsung It's not your fault if your router is running on a congested channel. Go to your router's web interface (usually 192.168.0.1 or 192.168.1.1) and check:
| Parameter | Recommended value | Explanation |
|---|---|---|
| Range | 5 GHz (80 MHz) | Less interference, higher speed, but smaller radius |
| Channel (2.4 GHz) | 1, 6 or 11 | These channels do not intersect with neighboring ones. |
| Channel (5 GHz) | 36–48 or 149–165 | DF channels are less congested |
| Channel width | 20/40 MHz (2.4 GHz), 80 MHz (5 GHz) | Wider = faster, but may lag on weak signals |
Use apps like WiFi Analyzer (Android) to see channel load. If there are 10 networks on channel 6 in your home, switch to channel 1 or 11.
⚠️ Attention: Router settings may be reset after a firmware update. Always document operating parameters (take a screenshot) or export the configuration file.
4. Updating firmware and Wi-Fi drivers
Manufacturers regularly release patches to fix Wi-Fi bugs. Samsung check for updates:
- Open
Settings → Software Update - Click
Download and install - If there are no updates, check manually via Smart Switch (PC version)
For router:
- 🔄 Update the firmware via the web interface (section
Administration → Firmware Upgrade) - 📋 Check the changelog: support for new standards is often added (for example, Wi-Fi 6E)
If Wi-Fi performance has worsened after an update, roll back the firmware or reset the network settings on your phone (Settings → General Management → Reset → Reset Network Settings).
What to do if the update is stuck?
If the router firmware update takes longer than 20 minutes, don't unplug the cable! Wait at least an hour. If the indicators aren't flashing, reset the router using the reset button. Reset (hold for 10-15 seconds) and repeat the procedure.
5. Advanced settings for experienced users
If the basic methods don't help, try:
- 📶 Forced 5 GHz Enable (if the phone is stuck on 2.4 GHz): in the Wi-Fi settings, hold the network → “Network management” → “Frequency band” → “5 GHz”
- 🔧 Changing DNS: In the Wi-Fi settings, tap the network → “Change network” → “Advanced” → specify DNS
1.1.1.1(Cloudflare) or8.8.8.8(Google) - 🛠️ Disabling power saving for Wi-Fi:
Settings → Device Care → Battery → Adaptive Battery Mode → Disable for Wi-Fi
For models Galaxy S20/S21/S22 With root access you can edit the file /system/etc/wifi/WCNSS_qcom_cfg.ini, increasing the parameter gEnableBatterySaveMode=0. This can't be done without root!
6. Hardware solutions: amplifiers and mesh systems
If software methods have been exhausted and the speed is still low, the problem is physical interference or a weak router. Consider:
- 📡 Wi-Fi repeater (from 1,500 ₽): enhances signal in dead zones
- 🌐 Mesh system (from 10,000 ₽): multiple access points, seamless switching
- 🔌 Powerline adapter (from 3,000 ₽): transmits internet through electrical wiring
For Samsung with support Wi-Fi 6/6E (For example, Galaxy S23 Ultra) it makes sense to update the router to the standard 802.11axThe difference in speed can reach 30-40% compared to 802.11ac.
⚠️ Attention: Cheap repeaters (under 1,000 rubles) often cut speed in half. It's better to invest in a mesh system or a router with support. MU-MIMO.
7. Alternative connection methods
If you fundamentally can’t speed up your Wi-Fi, use:
- 📶 Mobile Internet (4G/5G): on Samsung turn on
Settings → Connections → Mobile networks → Data transferModern tariffs (for example, "Unlimited" from MTS) offer up to 100 Mbps - 🔗 USB-ethernet adapter (for models with OTG support): connect the phone to the router via a cable using a USB-LAN adapter (from 500 ₽)
For gaming or 4K video streaming, it's best to use wired connectionEven the fastest Wi-Fi is inferior to Ethernet in terms of stability.
FAQ: Frequently asked questions about speeding up Wi-Fi on Samsung devices
Why is Wi-Fi faster on iPhone than on Samsung?
Reasons:
- Apple uses its own Wi-Fi chips with optimized drivers.
- On Samsung Background power saving mode may be enabled.
- iOS caches DNS queries more aggressively.
Solution: Disable power saving for Wi-Fi and change DNS to 1.1.1.1.
How to check which band (2.4 or 5 GHz) your phone is using?
Install the application WiFi Analyzer or NetSpotThe network information will indicate the range. Alternatively, check the list of connected devices in your router settings—the range is usually listed there.
Does flashing my phone help speed up Wi-Fi?
Only if the problem is a bug in a specific version One UIOfficial updates usually fix such bugs. Custom firmware (for example, LineageOS) may provide an increase, but you risk losing the guarantee and stability.
Why does the speed drop in the evening?
Networks are overloaded in the evenings—neighbors are watching videos and playing online games. Solutions:
- Switch to 5GHz (less interference).
- Ask your provider to increase your tariff.
- Use QoS on the router to prioritize traffic.
Is it possible to speed up Wi-Fi using the engineering menu?
Yes, but be careful! Enter the code. *#0011#, select Wi-Fi and look at the parameters RX/TXChanging values without proper knowledge is not recommended, as this may result in the module not functioning.