How to change the Internet speed on an Android phone

Slow page loading and video buffering can irritate even the calmest user. When the 4G or 5G indicator is on, but the data is barely crawling, there is a natural desire to interfere with the operation of the system and force the process. The Android operating system provides many tools for fine-tuning the network stack, but not all of them are obvious to the average smartphone owner.

In this material we will examine in detail legal and safe ways to optimize your network connection. You'll learn how to reconfigure DNS, change access point settings, and use hidden engineering menus to stabilize the signal. It is important to understand that the physical speed limit is determined by your telecom operator, but the correct configuration of the phone allows you to get closer to this maximum, eliminating software congestion.

Diagnostics of the current network state

Before making any changes to the device configuration, you need to clearly understand the current situation. Often the problem lies not in the phone settings, but in an overloaded cell tower or poor coverage in a particular location. The first step should be an objective assessment of incoming and outgoing speed using specialized utilities.

Use popular services for measuring channel throughput, such as Speedtest by Ookla or built-in operator tools. Run the test in different locations: at home, on the street and in transport. This will help eliminate the weak signal factor. If the results differ radically from those stated in the tariff, the problem may be on the provider's side.

Pay attention to the connection type that is displayed in the status bar. Switching between standards GPRS, EDGE, 3G, 4G and 5G occurs automatically, but sometimes the phone gets stuck on an outdated standard even with better coverage. Forcibly changing the preferred network type in the settings can give an instant increase in speed.

Configuring APN access points

Access Point Names are the gateway between your mobile device and the operator’s network. By default, Android automatically adjusts these settings when you install a SIM card, but sometimes the configuration is suboptimal or outdated. Manually editing APN protocols is one of the most effective ways to “overclock” the mobile data.

To enter the settings menu, follow the path Settings → Connections → Mobile networks → Access points (APN). The interface may differ slightly depending on the manufacturer's shell (MIUI, OneUI, ColorOS), but the essence remains the same. Select an active access point or create a new one by clicking on the plus icon.

In the menu that opens, find the fields "APN Protocol" and "APN Roaming Protocol". Change the value from IPv4 to IPv4/IPv6. This will allow the device to use a more modern addressing stack, which in some cases reduces delays when establishing connections with servers. You can also try changing the authentication type to PAP or CHAP.

⚠️ Attention: Do not delete your operator's standard access points. If manual setup does not bring results or worsens the situation, you can simply select the original profile from the list and restore the network.

After saving the changes, be sure to reboot the device. This is a critical step because the network stack is only rebuilt after a full power-up cycle. If the speed has not changed, try resetting the APN settings to factory settings through the access point menu and repeat the procedure with other parameters.

Changing DNS servers to speed up the response

The Domain Name System (DNS) works like an Internet phone book, converting human-readable website addresses into server IP addresses. Standard DNS servers provided by your carrier are often overloaded or slow to process requests. Replacing them with public and fast alternatives can significantly reduce response time.

Starting with version Android 9 Pie, the system has added the “Private DNS” function, which encrypts DNS requests and allows you to easily change the provider of this service without obtaining root access. You can find this option in the section Settings → Connections → Other connection settings → Private DNS.

Select the "ISP Hostname" mode and enter the address of one of the fast services. The most popular and reliable options are:

• 🌐 dns.google —servers from Google, which are highly stable.
• 🚀 1dot1dot1dot1.cloudflare-dns.com —a solution from Cloudflare, which often shows the lowest ping.
• 🛡️ doh.cleanbrowsing.org —servers with built-in filtering of malicious content.

The effect of changing DNS is most noticeable when surfing the browser and loading heavy pages with many elements. For video streaming or online gaming, the gains may be less obvious, but connection stability is usually improved. Experiment with different providers to find the best option for your region.

Resetting network settings and airplane mode

Sometimes software glitches accumulate over long periods of operation of the device, leading to incorrect operation of the radio module. In such cases, complex manipulations are not required - just reset the network settings. This procedure will clear saved Wi-Fi passwords, Bluetooth settings and mobile data settings, returning them to the factory state.

You can reset through the menu Settings → System → Reset settings → Reset Wi-Fi, mobile data and Bluetooth settings. On some devices, the path may be different, for example, located in the "General Settings" section. Confirm the action, and the phone will restart the network interfaces.

A faster, but less radical method is to use airplane mode. Turn it on for 10-15 seconds and then turn it off. This causes the modem to reconnect to the nearest cell tower, which can help if you are in an area with unstable reception or your phone is stuck at a distant base station.

Optimization method	Difficulty	Impact on speed	Risks
Flight mode	Low	Temporary	None
DNS change	Low	Average (response)	Minimum
APN settings	Medium	High	Loss of Internet access
Network reset	Medium	High	Removing Wi-Fi passwords

Using the engineering menu and hidden codes

For advanced users, it is possible to access hidden radio module settings through the engineering menu. These tools allow you to manually control signal parameters, select frequency ranges, and test equipment. However, access to these functions depends on the processor manufacturer (MediaTek, Qualcomm, Exynos) and phone model.

Try entering one of the following codes into your phone through the Phone application:

• 📞 ##4636## — universal Android testing menu.
• 🔧 *#1596# — menu for devices based on MediaTek.
• ⚙️ *#0011# —Samsung service menu.

In the menu ##4636## select "Phone information". Here you will find a drop-down list for “Set your preferred network type.” Try switching the mode, for example, from LTE/TD-SCDMA/... to clean LTE Only. This will force the phone to ignore 3G and 2G towers, which is useful in areas where the 4G signal is weak but stable and the phone is constantly trying to switch to a slower standard.

⚠️ Warning: Be extremely careful in the engineering menu. Changing incorrect parameters can lead to a complete loss of communication, requiring the device to be re-flashed. Do not change settings whose meaning you do not know.

What to do if the code does not work?

Many manufacturers block access to the engineering menu in global firmware versions. In this case, you can try installing third-party applications such as MTK Engineering Mode, but they often require root access to work.

Optimizing background processes and applications

Often, low Internet speed is not due to a bad signal, but to the fact that the channel bandwidth is clogged with background processes. Apps can silently download updates, sync photos to the cloud, or stream data, leaving few resources for your current tasks.

Go to the data usage settings (Settings → Connections → Data usage) and analyze the list of applications. Find apps that are consuming traffic in the background and limit them. For Google system services or instant messengers, this may be undesirable, but for games and rarely used software, limiting the background is quite safe.

Also disable the "Wi-Fi Assist" or "Intelligent Network Switching" function if it is present on your phone. This option automatically uses the mobile data when the Wi-Fi signal is weak, which can lead to incorrect operation and consumption of mobile traffic without the user's knowledge.

Clearing the browser cache and network services can also help. Go to Settings → Applications, find your browser and chrome services, then select "Storage" and click "Clear cache". This will remove temporary files that sometimes interfere with loading new pages.

Frequently asked questions (FAQ)

Will installing Internet accelerator applications help?

In most cases, such applications are a marketing ploy. They either simply clear the cache (which you can do yourself), change the DNS, or show ads. They do not provide real physical acceleration of the channel and can even slow down the phone with their background processes.

Why does the speed drop in the evening?

This is a classic problem of network congestion. During the evening hours (from 19:00 to 23:00) the number of active users in your area is maximum. The base station's bandwidth is shared by everyone, so the speed drops regardless of your phone's settings.

Is it possible to unlock hidden 4G frequencies?

Theoretically, yes, through the engineering menu or IMEI patches, but this is a complex procedure that requires root access. Moreover, using frequencies that are not licensed to your operator in a given region may result in fines or blocking of the device by the operator.

Does the case affect the Internet speed?

Yes, it can. Cases with metal inserts or too thick protective glass can shield the smartphone's antennas, especially if they are located at the ends of the device. Try removing the case and checking the speed - the difference may be noticeable.

Is it worth updating the firmware to improve communication?

System updates often contain modem bug fixes and improvements to network algorithms. If you are experiencing constant problems with communication, checking for software updates in the section Settings → System update will be the first logical step.