In today's world, a smartphone often becomes the sole internet connection for a laptop or tablet, especially when traveling or experiencing temporary issues with your home provider. However, users often encounter the frustrating situation of the 4G or 5G speed advertised by the carrier being significantly lower than expected on the receiving device. This is frustrating and slows down performance, but often the cause lies not in a weak tower signal, but in incorrect access point settings.
Operating systems often choose compatibility settings by default, sacrificing speed so that even the oldest gadget can connect to the network. Understanding how wireless protocols work This allows you to change this situation and get the most out of your channel. In this article, we'll explore the technical nuances that will help you optimize your data transfer.
Before we get into the complex details, it's worth noting that base speed depends on network coverage and your tariff plan. Android And iOS Modem functions have their own implementation specifics that must be taken into account. Let's consider the factors that primarily influence channel throughput.
Selecting the optimal frequency range
The first and most important step to increasing speed is choosing the right access point frequency. Most modern smartphones default to the 2.4 GHz band, as it offers better penetration and compatibility with older devices. However, this band is often congested with neighboring routers and household appliances, creating significant interference.
If your receiving device (laptop or tablet) supports the 5 GHz standard, switching to this frequency will provide a huge performance boost. 5 GHz band Provides a wider data transmission channel and is less susceptible to interference. While its range is shorter and it doesn't penetrate walls as well, it's ideal for distributing internet in a single room.
⚠️ Note: When switching to 5 GHz, older devices may simply stop seeing your network. Make sure your client device supports 802.11ac or later.
To change the band, you need to go to the access point settings. The steps may vary depending on your phone model, but the logic is the same. Look for the "Band" or "Frequency" option.
- 📶 2.4 GHz: Better at breaking through walls, but low speed and a lot of interference from microwaves and Bluetooth.
- 🚀 5 GHz: High speed, minimal delays, but short range and poorer ability to pass through obstacles.
- 🔄 Auto: The system itself selects the frequency, which does not always lead to the optimal result.
After changing the setting, the phone will reconnect to the Wi-Fi module, and the network will become available on the new frequency. This often increases the actual speed by 2-3 times in an apartment building.
Setting up security and encryption standards
A security protocol not only protects against unauthorized access but also affects processor overhead and signal encoding efficiency. Outdated encryption methods can artificially limit connection speeds by requiring more computing resources to process packets or using less efficient compression algorithms.
The modern de facto standard is WPA2-Personal (AES)This mode provides a balance between high speed and reliable security. If your access point is configured for WPA/WPA2 Mixed mode, or even worse, only WPA (TKIP), the speed may be limited to 54 Mbps, which is typical for the ancient 801.11g standard.
Why does TKIP slow down the network?
TKIP was developed as a temporary solution for older devices and has software speed limitations. Using AES allows for hardware-accelerated encryption in the smartphone's processor.
Check the current security settings in the access point menu. Make sure the encryption type is selected. AES, and not TKIPThis is especially true for devices based on Android, where mixed modes are sometimes found for the sake of backward compatibility.
It is also worth mentioning WPA3If your phone and receiving device support this latest standard, it's preferred. It's not only more secure but also manages the connection more efficiently, although WPA3 support in tethering mode is still rare.
Managing connected devices and limits
Mobile internet is a limited resource, and a smartphone's processor doesn't have the power of a full-fledged router. When multiple devices are connected to a hotspot, network performance crashes for each user due to constant context switching and time slot distribution.
Operating systems allow you to limit the number of connected clients. It's recommended to set a hard limit of 2-3 devices if you need maximum speed for work. Extra connections, even passive ones (such as a smartwatch or background services on another phone), put a strain on the radio module.
| Parameter | Recommended value | Impact on speed |
|---|---|---|
| Max clients | 2-3 devices | High (reduces CPU load) |
| Time-out | 1-5 minutes | Medium (saves battery) |
| IP range | Standard | Low (affects compatibility) |
There's also a "Hot Spot Timeout" feature. It automatically disables tethering if no one is connected to the network for a set amount of time. This is useful for saving battery, but if you're taking breaks from work, make sure the timer doesn't turn off the network at the most inopportune moment.
Secret APN settings for speed
Often, the problem with low speed is not the Wi-Fi module, but the cellular network connection settings. Access points APN (Access Point Name) Determine which gateway your phone uses to connect to the internet. Carriers often have multiple gateways, and the default one may be overloaded with subscribers.
Creating a new access point with optimal parameters can sometimes allow you to bypass artificial restrictions or simply find a less congested route to the server. This is especially true for 4G/LTE networks, where MTU (packet size) parameters play a crucial role.
To change the settings, go to Settings → Mobile network → Access point names (APN)Create a new point by copying the parameters of the current one, but try changing the protocol type.
- 🌐 APN Type: Try to set it
default,suplor simplydefault. - 📦 Protocol: Install
IPv4/IPv6, if only one is available, select IPv4. - ⚙️ MTU: In some cases, changing the MTU value (for example, to 1400 or 1460) can stabilize the connection.
⚠️ Warning: Incorrect APN settings can result in complete loss of mobile internet service. Write down the original settings before changing them so you can restore them later.
After saving the new access point, be sure to restart your phone or enable airplane mode for 10 seconds to allow the network to reconnect with the new settings. Check your speed using Speedtest before and after the change.
☑️ Check APN settings
Specifics of setting up on Android and iOS
Access point management approaches vary significantly across platforms. Owners iPhone Limited by Apple's security policy: iOS doesn't allow changing the frequency (always 2.4 GHz on most models) or the APN customization depth without a carrier profile. However, the "Personal Hotspot" feature in iOS is optimized for the Apple ecosystem and often works more reliably out of the box.
Users Android have much more freedom, but also more responsibility. Depending on the version of the shell (One UI, MIUI, Pixel UI, ColorOS), the menu may have different names. Often, you need to enable "Developer Mode" or use hidden menus to unlock the 5 GHz frequency.
On some models Samsung or Xiaomi The 5 GHz option is hidden if the device's region doesn't match the region it's being used in. In such cases, changing the region in the phone's settings or using special tweaking apps that require root access (not recommended for regular users) can help.
How to enable 5GHz on hidden Android smartphones?
In some cases, the ADB command helps: adb shell wm size 1920x1080 (it doesn't change the resolution, but it can update Wi-Fi configs), but this doesn't work on all firmware versions.
This is normal, but may result in delayed notifications.
Effect of battery charge and overheating
Modem mode is one of the most power-hungry processes on a smartphone. The radio module operates at maximum power, and the processor actively encrypts traffic. This causes the device to heat up quickly. Thermal throttling — a protection mechanism that reduces the performance of the processor and radio module when overheating, which directly affects internet speed.
If you're planning a long tethering session, remove your phone's case or place it on a cool surface. Some users even place the phone in front of a fan during intensive use. Reducing the temperature allows the device to maintain maximum processor speeds and a stable signal.
Additionally, when the battery level is low (below 20%), many smartphones automatically enter power-saving mode, which can limit background activity and Wi-Fi power. For maximum speed, keep the battery level above 50% or connect the device to a power source.
⚠️ Caution: Using your smartphone in hotspot mode for extended periods while charging can cause the battery to swell due to dual heating (from charging and modem operation). Monitor the battery's temperature.
There's a myth that using a USB cable for internet sharing is always faster. In fact, a USB modem (RNDIS) is indeed more stable and doesn't generate as much heat, but the maximum speed is limited by the USB port and driver bandwidth, and in most cases, the difference compared to a good 5 GHz Wi-Fi connection is unnoticeable.
Frequently Asked Questions (FAQ)
Why is my Wi-Fi speed lower than my mobile internet speed on my phone?
This is due to the overhead of encryption, packet reselling between interfaces, and processor limitations. Distance and interference also play a role. Typically, the loss is 10-20% of the original speed.
Is it possible to share Wi-Fi if the data saving mode is enabled on the phone?
Yes, but the system may limit background data transfer and streaming quality for connected devices. For full functionality, it's best to disable data saving mode.
Does the network name (SSID) affect speed?
No, the network name is simply a text label. However, using special characters or emojis in the name on some older devices may cause connection errors, which will indirectly impact the user experience.
How do I know who is connected to my hotspot?
The access point settings (usually at the bottom of the screen or in the "Connected devices" menu) display a list of all active clients with their IP and MAC addresses. You can also block them there.
Is it true that 5G (fifth generation of communication) is always faster when distributing?
Not always. 5G frequencies (especially mmWave) have a very short range. If the 5G signal is weak (1-2 bars), the phone will constantly switch to 4G, causing dropouts. Stable 4G-LTE is often better than unstable 5G.