The modern smartphone has become the main tool for work, entertainment and communication, so low mobile data speed can be a real disaster. When pages take forever to load and videos are constantly buffering, there is a strong desire to figure out how to improve 4G on Android and get the most out of the network. Often the problem lies not in the operator's tariff, but in incorrect system parameters of your device.
Owners of mobile devices often face a situation where in one point of the city the connection flies, and in another - the EDGE barely works, although the operator's tower is very close. This may be due to base station overload, building architecture, or, more likely, software limitations that can be bypassed. Proper setup APN, choosing the right frequencies and resetting network parameters will work wonders.
In this article we will look at proven optimization methods that will help stabilize the connection. You don't need to be a communications engineer to apply most of these tips. It is enough to carefully follow the instructions and understand what parameters each switch in your is responsible for Android.
Diagnostics of the current network state
Before making any changes to the settings, you need to understand what exactly we are dealing with. Speed can drop for many reasons; switching modes without diagnostics often only aggravates the situation. The first step should always be to check the signal strength and connection type.
In the standard interface Android information is often presented too simply. The sticks in the corner of the screen are just a symbol that does not reflect the real picture of signal quality. For in-depth analysis, we will need more accurate data, such as level RSRP (Reference Signal Received Power) and SINR (Signal-to-Interference-plus-Noise Ratio).
To access this data, you can use the built-in test menu or third-party applications. Enter the code in the dialer ##4636##to get to the testing menu. Here you will see the actual signal strength in dBm. Values from -80 to -90 dBm are considered excellent, from -90 to -105 dBm are considered average, and anything below -110 dBm indicates an extremely weak signal, where stable 4G is out of the question.
⚠️ Attention: The test menu interface may differ on different firmwares. On some models Samsung or Xiaomi the code may be blocked by the manufacturer, then you will need to install specialized applications from the Play Market, for example, Network Cell Info Lite.
Pay attention to the parameter SINR. If it is positive and high, then the signal is clear. If the value is negative or close to zero, your phone “chokes” in noise and interference from neighboring towers, and no settings will help here - you need to change the location.
Basic access point setup (APN)
One of the most effective ways to improve 4G on Android is to manually adjust the access point. Operators often prescribe standard settings that may not take into account the specifics of your region or the current network load. Creating a new APN profile allows you to set higher priority data transfer protocols.
To enter the menu, go to Settings → Mobile network → Access points (APN). Here you will see a list of your operator's profiles. Do not edit the standard profile, it is better to create a new one by clicking on the plus or the "Add" button. In the "Name" field, enter any name, for example, Fast4G, and in the "APN" field, enter the address indicated on your operator's website (usually it is internet or mts, beeline etc.).
The key point is to configure the APN type and protocols. In the "APN Type" field, make sure that default,suplis entered. In the "APN Protocol" and "APN Roaming Protocol" fields, select IPv4/IPv6. This is critical since many modern networks already use IPv6, and forcing IPv4 only can create unnecessary delays when converting traffic.
- 🚀 Protocol: Always select a combined IPv4/IPv6 mode for maximum compatibility.
- 📡 Type: Ensure that the type is specified
default, otherwise the Internet may not work. - 💾 Saving: After entering all the parameters, be sure to press the menu (three dots) and select "Save", then activate the new point.
After saving the profile, do not forget to switch to him. Sometimes you need to restart your device or turn airplane mode on and off for the changes to take effect. If the speed does not increase, try changing the "MCC" and "MNC" parameters to the values of your region, but this is a more advanced level of settings.
☑️ Setting up a new access point
☑️ Setting up a new access point
☑️ Setting up a new access point
☑️ Setting up a new access point
Using the engineering menu for selection
The most powerful tool in the user's arsenal is the forced selection of frequency ranges. Smartphones by default try to switch between 2G, 3G and 4G in search of a “better” signal, which often leads to constant reconnections and slow speeds. Fixing only on LTE (4G) solves this problem.
In the menu ##4636## select "Phone information". Find the "Set your preferred network type" section. Here you will see a drop down list. For maximum speed, select mode LTE Only or NR/LTE/GSM (if you have 5G). This will prevent the phone from switching to 3G, even if the 4G signal becomes a little weaker.
⚠️ Attention: In LTE Only mode, incoming and outgoing voice calls may stop working on some phones if your operator does not support VoLTE (Voice over LTE) technology. Be prepared to quickly return the settings back if you lose connection.
Also in this menu you can find the “Run ping test” button. It allows you to check the stability of the connection to Google servers. If the ping jumps (jitter), then even a high download speed will not save you from lags in games and video calls. In this case, changing the frequency can help find a less busy channel.
For finer tuning of frequencies on processors Qualcomm and MediaTek there are special codes (for example, ##3646633## for MediaTek), but their use requires caution. There you can disable specific bands that are not used in your city or are very noisy, forcing the modem to work only with effective frequencies.
List of popular Band frequencies
Band 3 (1800 MHz) - the main range for cities, good speed and coverage. Band 7 (2600 MHz) - high speed, but poor penetration into buildings. Band 20 (800 MHz) - long-range, penetrates walls, but low speed. By turning off Band 20 in the city center, you can force the phone to stick to fast Band 3 or 7.
Resetting network settings and updating software
Sometimes the problem lies in software errors or conflicts in configuration files that have accumulated while using the device. If manual settings do not help, you should try a radical but effective method - a complete reset of network parameters. This will return all modem, Wi-Fi and Bluetooth settings to factory settings.
To perform this operation, go to Settings → System → Reset settings → Reset Wi-Fi, mobile data and Bluetooth settings. Please note that after this you will have to re-enter passwords for all Wi-Fi networks and again for Bluetooth devices. However, this often solves problems with the “sticking” of the communication module.
Do not forget about the system software. Smartphone manufacturers regularly release updates that contain patches for modem communications. Check for updates in the Settings → System → System updatesection. Sometimes an improvement in 4G reception appears precisely with the next security patch.
- 🔄 Reset: Clears the network driver cache and resets erroneous configurations.
- 📲 Update: Installs the latest modem drivers from the manufacturer.
- 🛠 Check: Make sure that the SIM card is not damaged and fits tightly in the slot.
If you have an old SIM card that was used back in the days of 2G/3G, it is worth contact the operator's showroom to replace it with a USIM that supports modern encryption standards and speeds. Old cards may not physically support some 4G frequency bands.
Before resetting network settings, take screenshots of important APN settings or save them in notes to quickly restore access to corporate or specific Internet settings.
Comparison of optimization methods
So that you can choose the most suitable solution to the problem, let's systematize the methods discussed. Each of them has its pros, cons and scope. Some take time, others act instantly, but carry risks.
The table below compares the main ways to improve the signal. Pay attention to the "Risks" column, since interference with the operation of the modem must always be conscious.
| Method | Efficiency | Complexity | Risks |
|---|---|---|---|
| Settings APN | Average | Low | Minimum (the Internet may stop working) |
| LTE Only mode | High | Medium | Loss of voice communication (without VoLTE) |
| Reset settings | Medium | Low | Loss of Wi-Fi passwords and Bluetooth |
| Engineering menu (Band) | Maximum | High | Complete loss of connection in case of error |
Choose a method based on your technical background. If you are not confident in your abilities, start by setting up APN and resetting the network. Leave the engineering menu for experienced users who understand the physical meaning of radio frequencies.
External factors and hardware limitations
Physical limitations cannot be ignored. No software will help if you are in a deep basement, elevator or radio silence zone. The 4G signal operates at high frequencies, which do not bend well around obstacles and do not penetrate thick concrete walls.
The case also plays an important role. Metallic cases or cases with magnetic rings for car holders can shield the smartphone's antenna, reducing signal strength by 30-50%. Remove the case and check if the signal level in dBm changes.
In addition, overheating the smartphone causes the processor and modem to reduce performance to protect components. If the phone is hot, the Internet speed may drop. Let the device cool down and check the connection again.
⚠️ Attention: The technical characteristics of frequency support (Band) are different for all smartphones. A budget model may not support Band 7 or Band 32, which are active with your operator in a particular home. Check the specifications of your model on the manufacturer's official website.
In some cases, it makes sense to use an external antenna or repeater if you are in a country house with constant communication problems. But for an urban user, software optimization is most often sufficient.
Software settings are effective only in an area of reliable but unstable reception. In an area where there is no signal, only moving or an external antenna will help.
Why is 4G slow, even if full scale?
Full scale only means the signal strength from the base station to your phone. She doesn't talk about how busy this station is. If 500 people are connected to one tower, everyone will have slow speeds, regardless of signal strength. Also, the speed can be cut by the operator himself if the traffic limit in the tariff has been exhausted.
Is it harmful to constantly keep the "LTE Only" mode?
This is not harmful for the smartphone itself. However, if you go to an area where there is no 4G coverage, you will be left without any connection at all, as the phone will not switch to 3G for voice calls. Use this mode with caution.
Does replacing a SIM card affect the speed?
Yes, if your SIM card was released more than 5-7 years ago. Old cards may not support new authentication protocols and frequency bands, which causes the phone to work in a less efficient mode.