[Skip to main content](https://www.t-mobile.com#content-main) [](https://www.t-mobile.com/how-mobile-works) [](https://www.t-mobile.com/how-mobile-works) Search Search Submit search query Close out of search RECENT SEARCHES0 recent searches POPULAR0 popular search suggestions Categoriesundefined categories Suggestions0 search suggestions TOP SUGGESTIONS - [](https://www.t-mobile.com) undefined top suggestions - [Innovation](https://www.t-mobile.com/how-mobile-works/innovation) Innovation - [Leader in network innovation](https://www.t-mobile.com/how-mobile-works/innovation/the-leader-in-5g) - [Innovation with 5G Advanced](https://www.t-mobile.com/how-mobile-works/innovation/5g-advanced) - [Innovation with network slicing](https://www.t-mobile.com/how-mobile-works/innovation/5g-network-slicing-performance) - [Future of the network: AI RAN and 6G](https://www.t-mobile.com/how-mobile-works/innovation/ai-ran-and-6g) - [Network education](https://www.t-mobile.com/how-mobile-works/network-education) - [5G community benefits](https://www.t-mobile.com/how-mobile-works/5g-community-benefits) 5G community benefits - [5G powers smart cities](https://www.t-mobile.com/how-mobile-works/5g-community-benefits/smart-city-solutions) - [5G for public safety](https://www.t-mobile.com/how-mobile-works/5g-community-benefits/5g-and-e911) - [Closing the digital divide](https://www.t-mobile.com/how-mobile-works/5g-community-benefits/closing-the-digital-divide) - [Cell site permitting](https://www.t-mobile.com/how-mobile-works/cell-site-permitting) Cell site permitting - [Cell infrastructure and your community](https://www.t-mobile.com/how-mobile-works/cell-site-permitting/cell-site-construction-process) - [Living near a cell tower](https://www.t-mobile.com/how-mobile-works/cell-site-permitting/living-near-cell-tower) - [Federal laws, regulations, Spectrum Act](https://www.t-mobile.com/how-mobile-works/cell-site-permitting/cell-tower-regulations) - [Indoor coverage](https://www.t-mobile.com/how-mobile-works/indoor-coverage) Indoor coverage - [Connecting the Space Needle](https://www.t-mobile.com/how-mobile-works/indoor-coverage/wireless-innovation-space-needle) - [Developers plan early for coverage](https://www.t-mobile.com/how-mobile-works/indoor-coverage/wireless-infrastructure) Search Search Submit search query Close out of search RECENT SEARCHES0 recent searches POPULAR0 popular search suggestions Categoriesundefined categories Suggestions0 search suggestions TOP SUGGESTIONS - [](https://www.t-mobile.com) undefined top suggestions [](https://www.t-mobile.com) # How the wireless network works. The nationwide backbone that keeps 5G—and us—running is continually expanding and evolving to stay ahead of the growing demand. As it evolves, 5G is adding sophisticated features to enhance connectivity, improve online experiences, and make our everyday lives better.  ### Getting data wirelessly from point A to point B. A lot happens between “sending…” and “got it!” Whether it’s a text, a call, a web search, or a streaming video—all wireless data travels along similar paths. The typical path a signal takes looks something like the simplified diagram below.   ### Device. Sends data to the nearest cell site via radio signals.   ## Device. ### Cell site. Antennas receive radio signals and transmit data to base station.  ## Cell site. ### Base station. Encodes data and transmits signals to switch office.  ## Base station. ### Switch office. Routes data through network traffic to local cell site at destination.  ## Switch office. ### The recipient. Receives the communication on their device.   ## The recipient. ### Cell sites provide the critical connection points. Cell sites are all around us, sometimes camouflaged as trees, often attached to street lights or on the roofs of buildings.    ### "Macro sites." Are the tall towers that most people are familiar with. These sites generally range from 50 to over 200 feet high, and because of the height, they can cover an area of several miles.   ## "Macro sites." ### "Small cells." Are more compact and are growing in use today. They use lower levels of transmission power and cover a smaller area than macro sites, which makes them perfect for providing extra capacity for dense populations and high-traffic areas.   ## "Small cells." ### Radio waves carry the information on bands of spectrum. [Radio waves carry the information on bands of spectrum.](https://www.t-mobile.com) Radio waves carry the information on bands of spectrum. All wireless communications—TV and radio broadcasts, GPS data, cell service, and more—travel over naturally occurring radio waves. The "bands" of radio waves are called radio frequencies (RF) or spectrum—familiar to anyone who has changed the dial on a radio to find a clear station.   ## Radio waves carry the information on bands of spectrum.  ### Part of American history. [Part of American history.](https://www.t-mobile.com) Part of American history. Radio frequency (RF) is the same technology that has been used for radio broadcasts since the late 1800s. While RF lets us send and receive voice, text, photos, and videos with our phones, it’s also used by home electronics like baby monitors, cordless phones, and video game controllers.  ## Part of American history. ### Low-exposure cell sites. [Low-exposure cell sites.](https://www.t-mobile.com) Low-exposure cell sites. Even though the FCC permits an effective radiated power (ERP) of up to 500 watts per channel, the majority of T-Mobile cell sites in urban and suburban areas operate at a significantly lower ERP.  ## Low-exposure cell sites. ### A multi-spectrum strategy provides national coverage. When it comes to spectrum, there are distinct advantages to using low-band, mid-band, and high-band (or millimeter wave) frequencies. While higher frequencies can transmit more information over short distances, lower frequencies travel farther and are less hindered by obstacles.    High-band spectrum (34,000 – 39,000 MHz, or millimeter wave) is used to support high-capacity demands in densely populated urban areas.    Mid- and low-band spectrum deliver reliable coverage across a variety of settings, including  urban, suburban, and even the most rural communities.   ### Adding low-band spectrum was a game-changer for T-Mobile. The range of available spectrum is finite. Spectrum is regulated by the Federal Communications Commission (FCC), which licenses these radio frequencies to public and private organizations—and requires that mobile carriers do not cause interference with other spectrum license holders.     Our addition of low-band 600 MHz spectrum in 2019 is an example of how strategically acquiring and utilizing multiple bands of spectrum improves the entire network. Our low-band 600 MHz spectrum covers the continental U.S. and is significant because these airwaves travel farther and are less hindered by obstacles like foliage, rain, and buildings.   ## Adding low-band spectrum was a game-changer for T-Mobile. ### Tilting cell tower antennas for public safety. When emergencies like wildfires, floods, or storms hit, first responders depend on strong mobile networks to save lives. But reaching a cell tower to fix or adjust it can be tough—especially in remote or rugged areas. That’s why we use smart technology to remotely tilt cell tower antennas. By aiming the signal exactly where it's needed, we can quickly improve coverage for rescue teams, giving them faster access to the network and the bandwidth they need to coordinate life-saving work.   ## Tilting cell tower antennas for public safety. ### The network stays ahead of the game. 5G changed everything.     Wireless traffic is always increasing, across more devices, with higher-bandwidth requirements. And with new innovations in technology come new opportunities to bring more functionality to towns, homes, and workplace.    Much like roads or highways, networks must be continuously upgraded to support a growing amount of wireless traffic. Often, this means installing more antennas in more places, as well as making sure there’s a high-speed connection back to the core network.   ## The network stays ahead of the game. ### The network’s goal: optimal coverage and capacity All wireless communications—TV and radio broadcasts, GPS data, cell service, and more—travel over naturally occurring radio waves. The “bands” of radio waves are called radio frequencies (RF) or spectrum—familiar to anyone who has changed the dial on a radio to find a clear station.   ### Coverage. [Coverage.](https://www.t-mobile.com) Coverage. Whether you have wireless service in a geographical area.  ## Coverage.  ### Capacity. [Capacity.](https://www.t-mobile.com) Capacity. Bandwidth for data to flow between your device and cell site.   ## Capacity. ## Network gets faster with each generation . The network is evolving to keep 5G moving forward (and eventually getting us to 6G).     You can see how far we’ve come, across network generations, thanks to the new technologies in our devices and in the network that makes these connections possible.     A viable mobile network allows us to both keep up and get ahead.   ## 2G enabled digital phone calls, text messaging and basic data services.  ## 2G enabled digital phone calls, text messaging and basic data services. ## 3G introduced integrated voice, messaging, mobile internet, broadband data and apps.  ## 3G introduced integrated voice, messaging, mobile internet, broadband data and apps. ## 4G enabled high-speed internet, high-capacity multimedia, and more reliable connections. Mobile ridesharing services did not exist before this generation of wireless.  ## 4G enabled high-speed internet, high-capacity multimedia, and more reliable connections. Mobile ridesharing services did not exist before this generation of wireless. ## 5G—A technological revolution connecting trillions of devices like autonomous cars, smart homes, and entire smart cities in the Internet of Things (IoT).  ## 5G—A technological revolution connecting trillions of devices like autonomous cars, smart homes, and entire smart cities in the Internet of Things (IoT). ### The decentralized network of the future. How will the network change as 5G evolves and 6G emerges? It will move away from centralized hubs, relying instead on multiple nodes that will bring the processing closer to users. This decentralization will result in even lower latency, getting us closer than ever to a true real-time experience.   ## The decentralized network of the future. ## Hello! Want to stay logged in? To keep your accounts safe, you'll be automatically logged out in:  Yes, stay logged in No, log me out ## Share your screen with an Expert __Get guided support over the phone or while shopping in-store__ - For your security, personal info, tabs, and notifications are automatically hidden. - You can stop screen sharing at any time. - Experts can only see what’s on T-Mobile.com. - Don’t use screen share while driving or in any situation where it's unsafe to focus on your screen. By clicking 'Accept and continue,' you are consenting to allow the Expert to view your screen for assisted navigation. This session may be recorded. To learn more, please visit the 
[__T-Mobile Privacy Notice__](https://www.t-mobile.com/privacy-center/privacy-notices/t-mobile-privacy-notice). Accept and continue No thanks __Next:__ Generate a code to share with your Expert ## Share this code with your Expert code Once your code has been successfully entered by your Expert, this window will close and continue to the session. ## Allow screen sharing with your Expert? Personal and sensitive data is hidden for your security and privacy. Allow Don’t allow ## End your session? Ending your session will stop sharing your screen, but will not end your call. End session Continue session ## Your session has ended Your screen is no longer being shared with your Expert. OK Share again ## You are already in an active session OK ## Your code has expired Generate a new one to share with your Expert. Generate new code ## Follow T-Mobile - ### How mobile works How mobile works - [Innovation](https://www.t-mobile.com/how-mobile-works/innovation) - [Network education](https://www.t-mobile.com/how-mobile-works/network-education) - [5G community benefits](https://www.t-mobile.com/how-mobile-works/5g-community-benefits#INTNAV=tNav:5GCommunityBenefits) - [Cell site permitting](https://www.t-mobile.com/how-mobile-works/cell-site-permitting) - [Indoor coverage](https://www.t-mobile.com/how-mobile-works/indoor-coverage) [](https://www.t-mobile.com/) - [About](https://www.t-mobile.com/our-story) - [Investor relations](https://investor.t-mobile.com/default.aspx?INTNAV=fNav%3AInvestorRelations) - [Press](https://www.t-mobile.com/news) - [Careers](https://careers.t-mobile.com?INTNAV=fNav%3ACareers) - [Deutsche Telekom](https://www.telekom.com/en?INTNAV=fNav%3ADeutscheTelekom) - [Puerto Rico](https://www.t-mobilepr.com/?INTNAV=fNav%3APuertoRico) - [Privacy Notice](https://www.t-mobile.com/privacy-center/privacy-notices/t-mobile-privacy-notice) - [Trust Center](https://security.t-mobile.com/?INTNAV=fNav%3ATrustCenter) - [Privacy Center](https://www.t-mobile.com/privacy-center) - [Consumer information](https://www.t-mobile.com/responsibility/consumer-info) - [Public safety/911](https://www.t-mobile.com/responsibility/consumer-info/safety/9-1-1) - [Terms & conditions](https://www.t-mobile.com/responsibility/legal/terms-and-conditions) - [Terms of use](https://www.t-mobile.com/responsibility/consumer-info/policies/terms-of-use) - [Accessibility](https://www.t-mobile.com/responsibility/consumer-info/accessibility-policy) - [Open Internet](https://www.t-mobile.com/responsibility/consumer-info/policies/internet-service) - [Do Not Sell or Share My Personal Information](https://www.t-mobile.com) - [Licenses & Patents](https://www.t-mobile.com/responsibility/legal/licenses-and-patents) - [Consumer Health Data Privacy Notice](https://www.t-mobile.com/privacy-center/privacy-notices/t-mobile-privacy-notice.html?INTNAV=fNav%3AConsumerHealthDataPrivacyNotice#health-data-privacy-notice) - T-Mobile, the T logo, Magenta and the magenta color are registered trademarks of Deutsche Telekom AG. - [Instagram](https://www.instagram.com/tmobile/) - [Facebook](https://www.facebook.com/TMobile) - [X](https://twitter.com/TMobile) - [You Tube](https://www.youtube.com/user/TMobile/custom) © 2026 T‑Mobile USA, Inc.  ## Stay up to date with notifications Get the latest from T-Mobile when you’re using the web. You can opt out any time. Allow notifications Don't allow  ## Get the latest from T-Mobile Stay up to date with notifications - including offers just for you Allow notifications Don't allow notifications ## Device. ## Cell site. ## Base station. ## Switch office. ## The recipient. ## "Macro sites." ## "Small cells." ## Radio waves carry the information on bands of spectrum. ## Part of American history. ## Low-exposure cell sites. ## Adding low-band spectrum was a game-changer for T-Mobile. ## Tilting cell tower antennas for public safety. ## The network stays ahead of the game. ## Coverage. ## Capacity. ## 2G enabled digital phone calls, text messaging and basic data services. ## 3G introduced integrated voice, messaging, mobile internet, broadband data and apps. ## 4G enabled high-speed internet, high-capacity multimedia, and more reliable connections. Mobile ridesharing services did not exist before this generation of wireless. ## 5G—A technological revolution connecting trillions of devices like autonomous cars, smart homes, and entire smart cities in the Internet of Things (IoT). ## The decentralized network of the future.  ## Stay up to date with notifications Get the latest from T-Mobile when you’re using the web. You can opt out any time. Allow notifications Don't allow  ## Get the latest from T-Mobile Stay up to date with notifications - including offers just for you Allow notifications Don't allow notifications