Jaringan
Pemilihan jaringan, tidak ada sinyal, dan pengaturan roaming.
This section explains the network settings relevant to using an eSIM while travelling — from the APN configuration some devices need entered manually, to choosing a network mode, through to why a device sometimes shows an unfamiliar network name. What is written here focuses on settings and network behaviour, not the installation or activation steps, which live in other categories.
If the symptom is that data does not work at all despite activation, check the activation category first to confirm every step has genuinely been completed. If activation was done correctly but there is still a problem with speed or a weak signal, the data-speed category answers that more directly.
What APN settings are and how much they matter
APN stands for Access Point Name — a value that tells the device which channel to use when connecting to the data network. Most devices set this automatically the moment a profile is installed and connects successfully, though some models or situations may require entering it manually.
The correct APN value for your plan, if one is needed, is stated in your order confirmation email. We do not recommend guessing or copying an APN value from a different plan, since each underlying network uses its own value — entering the wrong one can prevent the device from connecting to the network at all.
Which network mode to choose
The network mode menu usually offers several choices, such as automatic selection or a fixed network type. Generally it is best set to automatic, or to the broadest option the device supports, letting the device choose whichever network is best in that area itself.
Locking the network mode to a fixed, older-generation type can result in slower connections or no signal at all in areas that generation does not cover. Without a specific reason, there is no need to change it away from the automatic setting it came with.
Why the network name shown is unfamiliar
| What you see | What it means |
|---|---|
| A network name never seen before | The profile connected through a local partner network, which is normal behaviour for cross-operator roaming |
| Letter indicators such as E, 3G, 4G, 5G E beside the signal bars | Indicates the network technology currently connected, not a sign of a problem |
| The network name switching every so often | The device is automatically searching for whichever network has the best signal in that area |
What commonly appears in the status bar while roaming
Turning mobile data on or off while roaming
The device's overall mobile data switch must stay on for the eSIM profile to work at all, separate from that specific profile's own data roaming switch, which is explained in the activation category. If the overall mobile data switch is off, the device will not connect to the internet over any mobile network, regardless of which SIM is involved.
If the device holds both the original main SIM and the eSIM profile at once, check whether the eSIM profile is already set as the primary data route, since if the device is still using the main SIM for data, unintended roaming charges from that main SIM could result.
Using a VPN alongside an eSIM
Using a VPN while connected through an eSIM works just as it would over any other mobile connection, though a VPN can reduce speed somewhat since data passes through an additional intermediary server, and some countries carry legal restrictions on VPN use, which is something the traveller needs to check for themselves against the destination country's own rules.
Can Wi-Fi Calling or internet-calling apps be used?
Since most travel plans are data-only with no local voice number, making or receiving calls usually relies on internet-calling apps, such as popular messaging apps that support calling, which use the eSIM profile's data normally, as long as an internet connection is present.
The operating system's own Wi-Fi Calling feature is usually tied to your original main SIM, not the newly installed eSIM profile. If you want to use that feature, check with your main SIM's operator whether it supports this and have it switched on before travelling.
- Let the device set the APN automatically first
- Set the network mode to automatic unless there is a specific reason not to
- Confirm the eSIM profile is set as the primary data route
- Switch off data roaming for the original main SIM before travelling
- Do not be alarmed if the network name shown is unfamiliar
Selecting a network manually when it is genuinely necessary
The network settings menu usually offers an option to search for and pick a network manually instead of automatic mode, which is not normally needed, since the device already selects the best network in the area on its own. This option is useful only when the device gets stuck on an unusually weak network despite another one being present in the same area.
Selecting manually means opening the list of every network the device has detected, then choosing a different partner network from that list instead. It is worth setting it back to automatic afterwards, since locking onto one network permanently can mean missing a better one after moving to a different area.
Status-bar icons worth recognising
The status bar shows several icons while roaming, some of which may look unfamiliar compared with being at home. The table below explains the general meaning without referring to any one manufacturer's specific icon design, since the exact appearance can differ by operating system and version.
| What appears | General meaning |
|---|---|
| A roaming icon | The device is connecting through a partner network rather than a home operator, which is normal for a travel plan |
| Letters denoting network type, such as E, 3G, 4G, 5G, beside the signal bars | Indicates the technology currently connected, not a sign of trouble |
| A no-SIM or crossed-out signal icon | Usually means data roaming for that profile is not yet on, or the device is still searching for a network |
Icons commonly seen while roaming and their general meaning
Resetting network settings safely
A network settings reset menu exists on most devices, though its exact location and name differ by manufacturer and OS version. This reset can fix an oddly stuck network setting in some cases, without removing an already-installed eSIM profile from the device.
Why connecting to Wi-Fi can make mobile data look broken
Most devices automatically prefer Wi-Fi over mobile data the moment a Wi-Fi connection succeeds, which can make an eSIM profile look broken when it is really just not being used at that moment because Wi-Fi is available instead.
To test whether the eSIM profile genuinely works, switch Wi-Fi off temporarily and try opening a webpage using only mobile data. If it still loads normally, the profile is genuinely connected and working.
Per-app permission to use mobile data
Some operating system versions carry a separate menu that allows or blocks a specific app from using mobile data at all, apart from the profile's main data-roaming switch. If an app you need still does not work despite the network otherwise connecting normally, this menu is worth checking too.
The location of this menu differs by manufacturer and OS version just like other menus, so searching for terms such as data usage or network access permission within the settings search box is the way to find its real location on your own device.
The network remembers a previous connection
When returning to the same area or country again within a short time, the device often reconnects to the same network it used before more quickly than the first time, since some connection information from before was retained. That said, this behaviour is not guaranteed, especially if the device stayed off for a long while or the profile was deleted and reinstalled.
If a connection is unusually slow despite the same network having been used before, restarting the device or toggling airplane mode remains the most direct fix, since it forces a fresh network search from scratch rather than relying on old information that may no longer match current conditions.
Still cannot get it configured? Contact the team
If adjusting the network mode, checking the APN and resetting network settings still leaves it unable to connect, contact the team via LINE at https://lin.ee/skDPoNx (ID @esimonline) or by email at esimonline.asia@gmail.com, stating the device model, operating system, and everything already tried.
A screenshot of the settings menu currently being attempted also helps a great deal, since the team can see the actual options on your device without having to guess what that menu looks like on the exact model and version you are using.
If a problem only shows up in certain areas of the same country, name the city or district where it happened rather than just the country, since network behaviour can differ from area to area even within one country. Being specific helps the team check and give more targeted advice.
- Let the device choose networks automatically unless stuck on an unusually weak one
- Unfamiliar status icons while roaming are usually normal
- A network settings reset does not remove the eSIM profile, but does clear saved Wi-Fi passwords
- Switch Wi-Fi off temporarily to test whether mobile data genuinely works
- Check the per-app data permission menu if one specific app in particular fails to work
- Contact the team via LINE or email with detail on what has already been tried
FAQ
Do I always need to enter the APN manually?+
Mostly not, since newer devices set it automatically the moment a connection succeeds. Only enter it manually if the connection genuinely fails, and use the correct value from your order confirmation email.
Why does restarting the device sometimes bring the network back?+
Restarting makes the device search for and connect to the network fresh from scratch, which often clears a temporary hang caused by switching networks while travelling.
Can a hotspot be used through this network setup?+
Yes, subject to the terms of the plan bought. Detail and how to switch on a hotspot are covered specifically in the hotspot category.
Why does speed differ between areas of the same country?+
Speed depends on the actual network density in that specific area, not a fixed figure set by the plan. This is covered in more depth in the data-speed category.
What should I do if I changed the network mode myself and lost connection?+
Try switching back to the automatic option in the same menu; if it still does not return, try restarting the device once more.
Can offline navigation help save data?+
Yes, many map apps support downloading maps in advance for offline use, which can substantially cut data usage while travelling.
Do I need to switch off Wi-Fi every time for mobile data to work?+
No — the device switches to mobile data automatically once no Wi-Fi is available. Switching Wi-Fi off temporarily is only a way to test it.
After a network settings reset, does the profile need reinstalling?+
No — an already-installed eSIM profile remains intact. The data-roaming switch may simply need turning back on.
Is it a problem if a manually chosen network is never set back to automatic?+
It can mean missing a better-signal network after moving areas. It is worth setting it back to automatic as soon as the reason for choosing manually has passed.
Pertanyaan umum di bagian ini
Apakah saya perlu mengaktifkan roaming data?+
Ya — tetapi hanya untuk jalur eSIM. Paket travel bekerja dengan roaming ke jaringan mitra. Pastikan roaming data tetap dimatikan di SIM asal Anda agar operator asal tidak bisa mengenakan biaya.
Apakah saya harus mengatur APN sendiri?+
Biasanya tidak — profil mengaturnya secara otomatis. Jika Anda memiliki sinyal tetapi tidak ada data, buka pengaturan jaringan seluler jalur eSIM dan masukkan APN yang tertera di halaman pesanan Anda. Biarkan nama pengguna dan kata sandi kosong kecuali dinyatakan lain.
Bagaimana cara memilih jaringan secara manual?+
Buka pengaturan jaringan seluler jalur eSIM, matikan pemilihan otomatis, tunggu pemindaian, lalu pilih salah satu jaringan mitra yang tercantum di halaman paket Anda. Jika tidak tersambung, coba yang berikutnya. Ini paling membantu di tempat beberapa jaringan saling tumpang tindih, seperti bandara dan area perbatasan.
Ponsel saya tersambung ke jaringan yang lebih lambat+
Ponsel tersambung ke sinyal terkuat, yang tidak selalu jaringan tercepat. Gunakan pemilihan manual untuk mencoba jaringan mitra lain, dan periksa apakah mode jaringan pilihan adalah 5G/LTE, bukan 3G atau mode hemat baterai yang membatasi kecepatan.
Bagaimana cara menerima OTP dari nomor asal saya di luar negeri?+
Jaga jalur asal Anda tetap aktif untuk menerima SMS tetapi matikan roaming data padanya. SMS masuk biasanya gratis sedangkan roaming data yang mahal. Pastikan dengan operator Anda sebelum terbang bahwa roaming suara/SMS aktif pada nomor Anda.
Bagaimana cara menghindari biaya roaming pada SIM asal saya?+
Matikan roaming data di jalur asal, atur data seluler ke jalur eSIM, dan nonaktifkan 'izinkan peralihan data seluler' — pengaturan itulah yang diam-diam kembali ke jalur asal Anda saat sinyal eSIM melemah. Periksa ulang ketiganya setelah Anda mendarat.
Bagaimana cara mematikan peralihan data otomatis?+
Di iPhone: Pengaturan > Seluler > Data Seluler > matikan 'Izinkan Peralihan Data Seluler'. Di sebagian besar ponsel Android: Pengaturan > Jaringan & internet > SIM > pilih SIM data dan nonaktifkan peralihan otomatis. Nama menu bervariasi tergantung produsen dan versi OS.
Bagaimana cara mengatur dual SIM?+
Simpan SIM asal Anda untuk panggilan dan SMS, atur eSIM sebagai jalur data, matikan roaming data di jalur asal, nyalakan untuk eSIM, dan nonaktifkan peralihan data otomatis. Memberi label pada jalur — 'Nomor asal' dan 'Data perjalanan' — membuat kesalahan jauh lebih jarang terjadi.
Bagaimana cara mengubah APN?+
iPhone: Pengaturan > Seluler > pilih jalur eSIM > Jaringan Data Seluler, lalu isi kolom APN. Android: Pengaturan > Jaringan & internet > SIM > Access Point Names, lalu buat APN baru dengan nilai dari pesanan Anda. Restart ponsel setelahnya.
Bisakah saya menggunakan VPN dengan eSIM saya?+
Ya. VPN berjalan di atas koneksi dan tidak peduli apakah itu berasal dari eSIM atau SIM fisik. Perlu diketahui, VPN menambah sedikit beban dan bisa menurunkan kecepatan. Pasang dan masuk ke aplikasi VPN Anda sebelum berangkat.
Ada hal khusus soal akses internet di Tiongkok daratan?+
Tiongkok daratan membatasi akses ke beberapa layanan internasional. Banyak paket perjalanan menggunakan roaming di jaringan domestik Tiongkok dan mewarisi pembatasan tersebut; beberapa mengarahkan lalu lintas keluar negara, yang mengubah apa yang bisa dijangkau. Periksa halaman paket sebelum membeli, dan siapkan solusi cadangan seperti VPN sebelum bepergian.
Bisakah saya tetap menerima panggilan di nomor biasa saya?+
Ya, jika ponsel Anda mendukung dua jalur aktif dan Anda membiarkan jalur asal tetap aktif. Matikan roaming data hanya untuk jalur itu dan atur data seluler ke profil travel. Panggilan dan SMS tetap masuk, tetapi biaya yang dikenakan operator Anda untuk menerimanya saat roaming adalah tarif mereka, jadi periksa dengan mereka dulu.
Apakah saya perlu melakukan sesuatu saat melintasi perbatasan?+
Jika paket mencakup negara berikutnya, ponsel biasanya terhubung kembali dengan sendirinya, yang bisa memakan waktu beberapa menit. Jika masih tidak ada data setelah sekitar sepuluh menit, aktifkan dan matikan mode pesawat sekali. Jika paket tidak mencakup negara tersebut, pasang paket berikutnya selagi Anda masih memiliki koneksi.
Jaringan mana yang akan saya gunakan?+
Tergantung perjanjian paket tersebut dengan operator di negara tujuan. Halaman paket mencantumkan jaringan yang bisa kami pastikan didukung. Ponsel Anda memilih secara otomatis dari sinyal yang tersedia dan bisa berpindah antar jaringan yang didukung saat Anda bepergian. Kami tidak menjamin jaringan tertentu.
Ponsel saya terus berpindah jaringan. Apakah itu normal?+
Ini normal saat Anda bergerak atau di area dengan beberapa jaringan bersinyal serupa: ponsel memilih yang terbaik pada saat itu. Jika pergantian sering mengganggu koneksi Anda, coba pilih jaringan secara manual di tempat Anda menginap, lalu kembalikan ke otomatis saat Anda berpindah.
Bisakah saya menggunakan eSIM di pesawat?+
Selama penerbangan Anda harus mengikuti aturan maskapai dan menggunakan mode pesawat. Internet di dalam pesawat menggunakan Wi-Fi milik maskapai sendiri, yang tidak menggunakan paket Anda dan ditagih terpisah. Paket Anda menjadi berguna setelah Anda mendarat.
Bagaimana dan kapan saya memilih jaringan secara manual?+
Lakukan ini saat ponsel tidak bisa menemukan jaringan meskipun pengaturan sudah benar: buka pemilihan jaringan, matikan mode otomatis, tunggu daftar muncul, lalu coba satu per satu jaringan yang ada.
Mengapa saya tidak mendapatkan 5G?+
Ini membutuhkan ketiganya sekaligus: jaringan yang Anda gunakan mengizinkan 5G untuk pengguna roaming, cakupan 5G di lokasi Anda, serta perangkat dan paket yang mendukungnya.
Baca setiap jawaban secara lengkap
- Apakah saya perlu mengaktifkan roaming data?
- Apakah saya harus mengatur APN sendiri?
- Bagaimana cara memilih jaringan secara manual?
- Ponsel saya tersambung ke jaringan yang lebih lambat
- Bagaimana cara menerima OTP dari nomor asal saya di luar negeri?
- Bagaimana cara menghindari biaya roaming pada SIM asal saya?
- Bagaimana cara mematikan peralihan data otomatis?
- Bagaimana cara mengatur dual SIM?
- Bagaimana cara mengubah APN?
- Bisakah saya menggunakan VPN dengan eSIM saya?
- Ada hal khusus soal akses internet di Tiongkok daratan?
- Bisakah saya tetap menerima panggilan di nomor biasa saya?
- Apakah saya perlu melakukan sesuatu saat melintasi perbatasan?
- Jaringan mana yang akan saya gunakan?
- Ponsel saya terus berpindah jaringan. Apakah itu normal?
- Bisakah saya menggunakan eSIM di pesawat?
- Bagaimana dan kapan saya memilih jaringan secara manual?
- Mengapa saya tidak mendapatkan 5G?