--- title: "Train Wi-Fi slow on Mac: test it, save data or use your hotspot · Kilobat Guides" url: "https://kilobat.app/pt/guides/train-wifi-mac" description: "Train Wi-Fi is shared by many passengers and drops along the route. Test it, get more from it, and know when your phone's hotspot is the better choice." --- # Wi-Fi do trem no Mac: deixe usável ou mude para o seu ponto de acesso Train Wi-Fi usually reaches the internet over mobile networks along the track. All the passengers share that connection, so it is often slow. Applies to: All current macOS versions. Instant Hotspot needs an iPhone or a cellular iPad with the same Apple Account as the Mac. · Verificado: 29 de outubro de 2026 ## Sintomas - The Mac joins and signs in, but pages load slowly or not at all. - Calls freeze and uploads stop. - The connection drops in tunnels and between stations, then comes back. - The sign-in page appears again after some time. ## Possíveis causas - **A shared connection.** The train's connection serves all its passengers. A full train leaves little speed for each device. - **Gaps in mobile coverage.** Tunnels, cuttings and rural areas interrupt the mobile networks that the train uses. - **Limits from the operator.** Some operators limit the speed, the data or the time for each device. Some block streaming. - **The sign-in, a VPN or custom DNS.** Train Wi-Fi often has a sign-in page. A VPN or custom DNS can hide it, as on other public networks. - **Background data on the Mac.** Sync, backups and updates use the same small connection as your work. ## Como verificar 1. In a browser, open http://captive.apple.com. If the operator's page opens, sign in. 2. Run Apple's speed test. Write down the result. ``` networkQuality ``` 3. Veja quais processos usam a rede agora. Pressione q para parar. ``` nettop -P -d ``` 4. Look at the mobile signal on your phone. Strong signal and few passengers can make the hotspot faster. ## Como corrigir 1. Turn on Low Data Mode for the train network. Choose Apple menu > System Settings > Wi-Fi. 2. Click Details next to the train network. Turn on Low data mode. Click OK. 3. Pause sync, backups and updates until you are on a better network. 4. In calls, turn off your camera. Audio uses much less of the connection. 5. If the train Wi-Fi is too slow, click the Wi-Fi icon. Choose your iPhone under Personal Hotspot. 6. Run the same speed test on the hotspot. Keep the faster of the two. 7. To stop the Mac from going back to the train Wi-Fi, open its Details. Turn off Automatically join this network. 8. On the hotspot, pause the apps that use data in the background. See [Mac uses Personal Hotspot data in the background](https://kilobat.app/pt/guides/hotspot-background-data). 9. In tunnels and remote areas, the hotspot can drop too. Save your work before them. ## Com o Kilobat 1. Find which part is slow: Wi-Fi, the router, the internet, DNS or the sign-in page. ``` kilobat diagnose ``` 2. Check the sign-in page, and whether the network logged you out after an earlier sign-in. ``` kilobat portal ``` 3. Test the speed with a limit on the data that the test uses. ``` kilobat speedtest --budget-mb 10 ``` 4. Veja o upload e download ao vivo de cada app. Pressione q para parar. ``` kilobat status --watch ``` 5. Mark the train network as metered. Kilobat then treats it like a hotspot. ``` kilobat networks cost metered ``` 6. For travel data packs, see [Working from anywhere with a Mac: eSIMs, phone hotspots and making data last](https://kilobat.app/pt/guides/work-from-anywhere-mac-mobile-data). ## Perguntas **Is train Wi-Fi or my hotspot faster?** It depends on the route, the time and your carrier. Test both with the same test, then keep the faster one. **Does train Wi-Fi use my phone's data?** No. Train Wi-Fi does not use your data plan. The Personal Hotspot does. **Is train Wi-Fi safe for work?** Pages with https hide their contents from the network. Turn on a VPN after you sign in, if your work needs one. ## Fontes - [Apple Developer News: Como modernizar sua rede cativa (22 de junho de 2020)](https://developer.apple.com/news/?id=q78sq5rv) - [Suporte da Apple: Ajustes de Wi-Fi no Mac](https://support.apple.com/guide/mac-help/wi-fi-settings-on-mac-mh11935/mac) - [Suporte Apple: conectar ao Acesso Pessoal de um iPhone ou iPad](https://support.apple.com/en-us/111785) - [Suporte da Apple: Usar o Acesso Instantâneo para conectar ao Acesso Pessoal](https://support.apple.com/en-us/109321) - [Apple Developer: NWPath isExpensive](https://developer.apple.com/documentation/network/nwpath/isexpensive) - networkQuality(8) and nettop(1), man page installed with macOS 27.2 Verificado em 29 de outubro de 2026. ## Guias relacionados - [O Mac usa dados do Acesso Pessoal em segundo plano](https://kilobat.app/pt/guides/hotspot-background-data): Um Mac conectado ao acesso pessoal de um celular pode usar muitos dados sem nenhuma ação sua. - [O acesso pessoal do iPhone não aparece no Mac](https://kilobat.app/pt/guides/instant-hotspot-not-showing): O Acesso Pessoal Instantâneo permite conectar o Mac ao acesso pessoal do iPhone ou iPad sem senha. - [Trabalhar de qualquer lugar com um Mac: eSIMs, acessos pessoais e como fazer os dados durarem](https://kilobat.app/pt/guides/work-from-anywhere-mac-mobile-data): Um Mac usando dados móveis pode esgotar um pacote de viagem em dias. - [Faça o Mac tratar uma rede como limitada](https://kilobat.app/pt/guides/metered-network-mac): O macOS marca algumas conexões como caras, como o Acesso Pessoal de um iPhone. - [Use o Modo de Economia de Dados no Mac](https://kilobat.app/pt/guides/low-data-mode-mac): O Modo de Economia de Dados orienta o macOS e os apps a usar menos dados em uma rede Wi-Fi. - [A página de início de sessão do Wi-Fi não aparece no Mac](https://kilobat.app/pt/guides/captive-portal-not-appearing): Redes públicas costumam reter todo o tráfego até você iniciar sessão em uma página. - [Chamadas de vídeo engasgam ou congelam no Mac](https://kilobat.app/pt/guides/video-call-stutter-mac): Chamadas precisam mais de latência e upload estáveis do que de alta velocidade.