How to speed up the Internet on Xiaomi Redmi Note 9: an expert guide

Owners of the popular Redmi Note 9 series of smartphones often face a situation where the speed of mobile Internet or Wi-Fi connection suddenly drops, despite a confident signal from the operator. This can manifest itself in long loading pages, video buffering or connection breaks in games. The problem lies not always in the tariff plan, but in the software settings of the device itself, which over time overgrow cache and conflicting parameters.

To effectively solve the problem, you need to comprehensively approach the diagnosis of network modules of your gadget. We will consider both standard reset methods and advanced optimization techniques. DNS-Proper setting will allow you to squeeze the maximum from the available coverage and hardware capabilities of the processor.

Before we move on to radical measures, it is worth eliminating trivial factors, such as overflowing memory or background processes. DNS-Google or Cloudflare servers can increase the speed of response to the Internet 15-20%. We will discuss each stage in detail so that you can choose the appropriate acceleration method.

Diagnostics of the current network status and signal

The first step is always to make an objective assessment of the situation, not just to rely on subjective feelings of "brakes"; you need to use the built-in MIUI tools to analyze the quality of the connection, go to the settings and check whether the type of network is active at the moment: 3G, 4G or LTE.

Often, the phone clings to a tower with a bad signal, negating a more stable one, but a little more remote, in which case manual network selection helps, and it's also worth checking if traffic saving mode is on, which artificially limits the background activity of applications.

• 📶 Check the signal level in different parts of the room – in the corners it can be significantly worse.
• 📱 Make sure there is no case with metal inserts blocking the antenna on the case.
• 🔄 Reboot your device to reset temporary network errors and re-register on the network.

If you look at the status bar indicators, if the 4G icon is often changed to E or G, the problem may be on the carrier side, but if the signal is full and the speed is low, the access point settings are the problem.

Optimization of mobile network settings and access points

The most effective method of speeding up mobile internet on the Xiaomi Redmi Note 9 is the manual APN adjustment (APN). Operators often prescribe standard settings that do not take into account the current network load or the characteristics of your region.

To make changes, go to the Settings menu → SIM-maps and mobile networks → Choose. SIM-map → Access points (APN). You need to create a new point or edit an existing one, and it's not about deleting the standard profiles, it's about creating a new one with optimized parameters.

⚠️ Note: Do not change the setting MCC and MNC, Because they're unique to your carrier, a mistake in these numbers will result in no mobile Internet connection at all.

In the Proxy and Port fields, the values should be empty. In the APN type field, write default,supl,dun. This will provide priority connection for data and navigation. After saving, be sure to turn on and off flight mode.

Configure DNS to speed up page response

The speed of loading sites depends not only on the bandwidth of the channel, but also on the time it takes for a domain name to turn into a new one. IP-The standard address. DNS-ISP servers are often slow, and replacing them with fast public servers is a proven way to speed up the response.

On modern versions of Android and the MIUI shell, this can be done without root rights through the “Private DNS” function. Go to Settings → Connection and Sharing → Private DNS. Select the option “Host Name of the DNS provider” and enter the address.

The most stable and quick options today are:

• 🌐 Google’s dns.google servers provide high stability.
• ⚡ 1dot1dot1dot1.cloudflare-dns.com — Often faster than competitors.
• 🛡️ dns.adguard.com – blocks network-level advertising trackers.

Once you enter the address, save the settings. The changes are effective instantly. If the Internet is gone, check if you enter the address correctly or temporarily turn off the function by returning the value of "Auto".

Resetting network settings and cleaning the cache

Over time, software debris and misconfigurations can seriously hamper communication modules. If simple methods do not work, a deeper cleaning is required. This will not delete your personal photos or contacts, but will reset all Wi-Fi passwords and Bluetooth settings.

Reset via Settings menu → Connect and share → Reset Wi-Fi, mobile networks and Bluetooth. Confirm the action and wait for the device to restart. This will force the phone to renegotiate the communication protocols with the nearest towers.

Additionally, clear the cache of Google Play system services, which are often responsible for geolocation and network services. Go to Settings → Apps → All apps → Google Play Services → Memory → Clear the cache.

Working with Wi-Fi frequencies and 5 GHz mode

The Redmi Note 9 supports dual-band Wi-Fi. In apartment buildings, the 2.4 GHz band is often overloaded by neighbourhood routers, causing interference and speed drops. Switching to 5 GHz solves this problem.

Make sure your router is giving away a 5GHz network. When connecting to Wi-Fi, you sometimes need to forget the network and reconnect by selecting a network marked "5G" at the end of the name. In the Wi-Fi Assistant settings (Settings → Wi-Fi → Wi-Fi Assistant), you can set up automatic switching.

⚠️ Attention: The 5GHz range has a shorter range and is worse at passing through walls. If you are far from the router, the speed may drop due to signal loss despite the free channel.

Also, in the assistant's Wi-Fi settings, turn off the Wi-Fi Acceleration feature if it uses mobile internet to speed up, which can cause network protocols to malfunction and traffic consumption.

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Use the Wi-Fi Analyzer app (or analogs) to see which channels in the 2.4GHz band are most loaded by neighbors, and manually set the free channel in the router settings.

Hidden engineering menus and additional parameters

For advanced users, there is an option to access the hidden test menu. Enter the code ##4636## in the Phone app. The testing menu will open, where you can select Phone Information.

In the “Set up your preferred network type” section, select an option that supports only LTE (e.g. LTE Only or LTE/TD-SCDMA/WCDMA) to prevent the phone from switching to slow 3G in areas of uncertain reception, although voice communication may become unavailable (depending on the operator).

Path to the menu:


1. Dial: ##4636##




2. Phone information




3. Network selection menu




4.LTE Only selection

So if you don't have 4G coverage in your area, the Internet will disappear completely, and you can turn it back by selecting "All" or restarting the device.

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Forced LTE Only is useful in areas with unstable signal, where the phone constantly “jumps” between 3G and 4G, breaking the connection.

Impact of System Updates and Background Processes

Don’t ignore MIUI updates. They often contain security patches and modem optimization. Check for updates in the Settings menu → About Phone → MIUI version.

However, immediately after a major upgrade, the system may be slow due to the background optimization of applications: Give the phone 30-60 minutes in the Wi-Fi state to complete all processes, and check if any application consumes all traffic in the background.

• 🚀 Turn off auto-update apps in the Play Market when using mobile data.
• 📉 Limit background activity for heavy applications in battery settings.
• 🧹 Clean your browser cache regularly if it has grown to hundreds of megabytes.

If the persists problem is only in certain applications, try to clear their data or reinstall them. Sometimes a conflict of versions of the software causes connection errors.