Your Android's mobile network is that invisible thread that keeps you connected for work, chatting, browsing, or ordering a ride at the last minute. When the signal fails, calls drop, or data speeds crawl—the experience becomes frustrating, especially if you even see 'mobile network unavailable'. Furthermore, if your phone spends all day searching for 5G without success, the The battery drains much faster than normal.
The good news is that you can take control: change the preferred network type on Android (2G, 3G, 4G, 5G) helps improve stability, coverage in challenging areas, and significantly extend battery life. Based on everything explained in the most comprehensive guides on mobile networks, coverage, and 5G, here's an ultra-detailed and practical article to help you configure your phone like a pro without going crazy.
What does the preferred network type mean on Android?
Almost all current Android phones let you choose which network technologies you want to prioritize. In the mobile networks menu, you'll see an option called “Preferred network type” (or very similar names) from which you can indicate whether your phone should use 2G, 3G, 4G or 5G, or an automatic mode that combines several.
On your screen, your Android will display icons like 2G, 3G, H/H+, 4G/4G+, LTE or 5Gwhich indicate the network generation you are connected to and, in practice, the speed and stability you can expect.
Mobile network types: 2G, 3G, 4G and 5G explained
Each network generation has its own particularities, and choosing one or the other as Preferred network type influences in coverage, speed and energy consumption.
- 2GSecond-generation network, very slow, nowadays used almost exclusively for voice and SMS in extreme cases. It can be a lifesaver in very remote rural areas, but browsing speeds are practically nonexistent. For greater security, consider disable the 2G network.
- 3G / H / H+Third generation (3G) was the standard for mobile browsing for years. It still exists, but many carriers are shutting down 3G to dedicate resources to 4G and 5G, so its future is limited.
- 4G / 4G+ (LTE)It's the most widespread network in Spain, with very good coverage and more than enough speed for almost everything. It's usually the best combination of stability and battery consumption.
- 5GThe latest generation, designed to offer very low latency and high speeds, is also intended for the Internet of Things (IoT). Its biggest problem today is that the Actual 5G coverage is still not uniform And in many areas, 5G DSS is used, which is quite similar in speed to 4G but uses more battery. If you experience slow speeds, check What to do when your internet is slow even with 5G.
Furthermore, it's not enough for your phone to be compatible: to use 5G you need a smartphone with 5G modem and a plan that includes 5G coverage. If your carrier doesn't offer 5G in your area, the phone will settle for 4G or lower speeds, even if the 5G icon never appears.
Why does changing your preferred network type improve coverage and battery life?
In practice, leaving your phone on “5G/4G/3G automatic” can cause your Android to be constantly connected. jumping between different networksEspecially in areas where 5G coverage is weak or nonexistent. This constant movement between antennas not only causes signal drops, but also significantly increases battery drain.
If you set a more stable network in your area as your preferred network, for example 4G/LTE onlyThis will reduce reconnections and the device will stop unnecessarily searching for 5G. The result is usually very clear: fewer micro-disconnections, fewer "SOS" or "searching" messages, and more screen time before needing to plug in the charger.
This same phenomenon occurred when 4G began to be rolled out: initially, many users had a better experience forcing a stable 3G connection than leaving their phone constantly switching between networks. 3G and 4G with a single barSomething similar is happening in many areas with 5G.
How to change the preferred network type on Android step by step?
The exact menu may vary depending on the brand (Samsung, Xiaomi, Motorola, Google Pixel, etc.) and the Android version, but the general idea is always the same: access the SIM card settings and tap on “Preferred network type”.
Standard path in "pure" Android (Pixel and similar)
- Open the app Settings of your mobile.
- Sign in “Networks and the Internet” (or “Network and Internet”).
- Tap on "Internet" and then the name of your mobile operator.
- Locate the option “Preferred network type” and click on it.
- Choose from the available options: 5G, 4G, 3G (Sometimes you'll see combinations like "5G/4G/3G", "4G/LTE only", "2G/3G/4G automatic"...).
In some models, instead of a list you will see a specific switch for activate or deactivate 5GIn that case, if you want to save battery or gain stability in an area with poor 5G coverage, simply turn off that switch and let the phone work only with 4G.
Typical route in custom layers (Samsung, Xiaomi, etc.)
In many layers of customization The route changes a little, but the concept is the same: go into SIM and mobile networks to decide the type of network.
- Go to Settings of the telephone.
- Sign in “SIM cards and mobile networks” (or “Connections > Mobile networks”).
- Select the SIM you use for mobile data.
- Press on “Preferred network type”.
- Switch between 5G, 4G, 3G or combinations like “4G/3G/2G automatic” depending on what your mobile offers.
On phones from brands like Xiaomi, you can also use this same menu to try other useful settings, such as to activate or deactivate data roaming, use 4G calls (VoLTE) or Wi-Fi calls (VoWiFi)which are very practical when mobile coverage is poor. Check out our Complete guide to setting up VoLTE and VoWiFi to take advantage of it.
When is it advisable to force 4G, 5G or even 3G?
There is no single answer that works for everyone, but there are some very clear scenarios in which changing your preferred network type is advisable. Mark the difference:
- Force 4G/LTEThis is the ideal choice if 5G is weak, intermittent, or simply unavailable in your area. You'll have good coverage across most of Spain and more than decent speeds, with very reasonable battery consumption.
- Leave 5G automaticThis might be interesting if you live or work in an area with good stable 5G coverage And you want to maximize download and upload speeds, for example, to upload large files or stream high-quality content. On some phones, automatic mode uses 5G only when data usage doesn't increase significantly.
- Use 3G as a last resortIn isolated rural areas or complex interiors where 4G barely reaches, sometimes it's better to lock onto 3G and have multiple bars of call coverage It's an unstable 4G connection that keeps dropping. However, it's worth remembering that many operators are gradually shutting down their 3G networks.
In the opinion of many experts, with the current coverage in Spain It's not worth having 5G permanently forced on.Since the actual speed increase is usually less than what the plans promise, and the battery drain is considerable, unless your area has high-quality 5G and you take full advantage of it, 4G is usually the perfect balance.
Other Android settings that affect coverage
In addition to your preferred network type, your Android device has several settings that affect signal quality and connection stability. Adjusting these settings will help you... get the most out of your operator's network.
Mobile data, data usage and savings
- Mobile dataThey activate or deactivate any mobile data connection. If you're always on Wi-Fi, you could temporarily turn them off to reduce power consumption, but remember to turn them on if you leave home.
- Use of dataThis shows how much you've spent and on which apps. It's usually quite similar to your carrier's data app and allows you to... set usage limits so you don't blow your fare.
- Data savingIt restricts background traffic, which may cause notifications to arrive later. It helps control data usage, but not so much for improving coverage itself.
It's also worth checking if the phone has any active modes. aggressive battery savingbecause some layers limit the modem's operation, and this can result in worse reception or less stability when connecting to certain networks.
APN and network operator
In the mobile networks menu you will find the section “Access Point Names” (APN)This defines how your phone connects to the internet through your provider. Most phones configure themselves these days, but if something goes wrong, you can always:
- Check that the active APN matches that of your operator (Movistar, O2, Vodafone, Lowi, Orange, MásMóvil, Pepephone, Simyo, etc.).
- Create a new APN with your carrier's official data if nothing else works.
In section "Operator" You can choose whether you want the phone to automatically search for a network or if you prefer to select one manually. Forcing a specific operator can help in a pinch, for example, if automatic mode insists on connecting to a poorly performing antenna, but it's recommended to... return to automatic selection To avoid losing coverage when changing areas. If your phone is experiencing registration problems, consult How to fix the 'not registered on network' problem.
Diagnosing Android Coverage Problems
Changing your preferred network helps, but before touching anything, it's important to understand the source of the problem. Poor coverage can be due to both external factors (distance to the antenna, terrain, network congestion) and internal factors. faults in the mobile phone itself or in the SIM card.
View the actual signal strength
The typical coverage bars These readings are indicative, but they don't tell the whole story. It's better to check the signal strength value in dBm, which appears in advanced menus or with specific apps.
- On Android, go to Settings > About phone > SIM status (approximate route) to check the signal strength.
- You can also use diagnostic apps like Network Cell Info, nPerf, OpenSignal or others that show the exact value and type of network you are connected to.
Signal strength is measured in dBm and is usually a negative number: the closer to 0, the better. Values between -50 and -79 dBm are considered excellentFrom -80 to -99 dBm the connection is good, from -100 to -109 dBm it is weak, and from -110 dBm onwards the connection is usually almost unusable.
Location, geography and obstacles
One of the most determining factors is the distance to the antenna and the physical environmentLiving in a valley, among mountains, in wooded areas, or in a building with very thick walls can cause shadow zones where the signal is so weak that you can barely browse the internet.
In urban environments, the city itself complicates matters for radio waves: tall buildings, tunnels, underground parking garages, subway stations and hospitals These are typical places where the intensity of the coverage plummets.
If you want to know which antenna your mobile phone connects to, services like GSM Antennas And tower locator apps let you see on a map where the signal is coming from, helping you to distinguish whether the problem is distance, terrain or something else.
Network saturation and problems of the operator
Even if you have a good signal, the network may be congestedThis happens on special dates (Christmas, New Year's Eve, big events) or in very crowded places such as concerts, football stadiums, tourist areas or demonstrations, where thousands of people compete for the same antenna.
In those cases, there's not much you can do except wait or try connecting to a stable Wi-Fi network to alleviate the situation somewhat. If the problems are frequent in your daily life, perhaps it's time to Consider switching to an operator with better infrastructure in your specific area.
Cases, battery, SIM and mobile phone malfunctions
It's not always about distant antennas: sometimes the problem is literally in your hand. Certain very thick, metallic, or magnetic phone cases can slightly degrade receptionIn areas with weak signal, removing the case makes the difference between having or not having coverage.
It can also fail itself SIM cardAlthough not the most common cause, an old, dirty, or damaged SIM card can cause network outages and registration errors. If you suspect something is wrong, also consider the option of switch to eSIM if your carrier and your mobile phone allow it.
- Restart the mobile.
- Turn it off, remove the SIM, gently clean the gold contacts and put it back in.
- If it still doesn't work properly and your operator rules out any faults in the area, request a SIM duplicate in a shop.
Finally, remember that many mobile phones, when their battery is very low, reduce the power of certain components to save energy, and this can affect mobile network quality. Keep your phone charged. a reasonable load level It helps avoid invisible performance cuts.
Practical tips to improve coverage in your daily life
Besides playing with the preferred network type and the rest of the settings, you have several simple tricks that can make a difference, especially indoors or in boundary signal areas.
- Move to a better areaMoving closer to a window, going upstairs, going outside, or finding a slightly elevated spot usually improves the signal by reducing obstacles between your phone and the antenna.
- Use airplane mode for a few secondsActivating and deactivating it forces the phone to reset its connection, ceasing to "cling" to a bad antenna if a better one is available.
- Restart deviceSometimes, a simple restart corrects software errors or minor modem anomalies that prevented you from taking full advantage of the area's coverage.
- Take advantage of Wi-Fi calling (VoWiFi)If you have good fiber optic internet at home but poor mobile signal, activating Wi-Fi calls allows you to use your usual number over the wireless network, avoiding interruptions when moving around the house.
- Disable unnecessary searchesTurning off the constant search for Bluetooth devices or limiting automatic background app updates reduces interference and frees up resources for the main connection.
Signal amplifiers and advanced home solutions
When you get some signal outside your home, but it drops off when you go inside, a mobile signal amplifier or repeater This could be the ultimate solution. These kits include:
- An external antenna that picks up the weak signal from outside.
- An amplifier that boosts that signal.
- One or more indoor antennas that redistribute it throughout the house or office.
With good equipment, you can improve at the same time voice coverage, 4G LTE and even 5G for multiple mobile phones simultaneously. However, it is crucial that the repeater is certified (CE marked, European RED standard) to avoid interference and that it is installed correctly.
If there's no acceptable signal even outdoors, a signal booster won't work miracles: these devices don't create coverage out of thin air, they only They multiply the existing signal.In these extreme cases, the alternative is to change operators, rely more on Wi-Fi, or use specific solutions that your company may offer.
Properly adjusting your preferred network type on Android, understanding how 2G, 3G, 4G, and 5G work, checking your SIM settings and APNs, and using tricks like Wi-Fi calling, signal boosters, or simply moving a few meters, gives you a much greater control Regarding your mobile's coverage and battery life; with these strategies applied calmly and some trial and error, it's perfectly possible to go from suffering disconnections and endless network searches to enjoying a much more stable connection and a phone that can last many more hours away from the plug. Share the guide and more users will know how to configure the type of network they want on Android.