Can I use eSIM without data
Does an eSIM work without internet connection Purchasing and downloading the profile requires internet access, switching between previously downloaded profiles does not need any internet access at all.
Does eSIM work with data
Some eSIM plans are data-only, but that doesn't mean you have to forgo calls and texts. You can still stay connected with friends and family while you travel, regardless of whether your eSIM has a call-and-text feature.
How does eSIM work with internet
For all travelers wondering how eSIMs work, they are integrated circuit chips stored within specific devices, enabling them to connect to wireless networks for internet connectivity upon downloading eSIM packages digitally. If a particular device or smartphone has an embedded SIM, it is considered eSIM capable.
Does eSIM have Wi-Fi
There are many handsets that support eSIM WiFi Calling. Unfortunately, this doesn't guarantee that a network will support the service on that particular device. Compatible devices vary from network to network (especially Android smartphones) and networks may have limitations on which mobile plans support the service.
Can I add eSIM without WIFI
Yes, you will need a Wi-Fi (or data) connection to install your eSIM because it needs to be loaded onto your device. If you've purchased an eSIM to use on vacation, we recommend installing your eSIM about a day prior to leaving on your trip.
Do I need to turn on data roaming for eSIM to work
Yes, data roaming must be enabled to use the KnowRoaming eSIM.
Does eSIM work while roaming
Roam internationally with your existing carrier
Alternatively, your home carrier might offer affordable travel passes or plans that you can purchase ahead of time to use in the destination you're visiting. International roaming with an eSIM works the same as roaming with a physical SIM.
Does eSIM use roaming
International roaming with an eSIM works the same as roaming with a physical SIM. To learn more, contact your carrier.
What are the disadvantages of eSIM
Hard to switch devices
It can be difficult to switch devices in case of emergencies. For instance, what if your phone stops working suddenly With a physical sim, you can easily take it out and insert it into another phone. You can't do that with an eSIM.
Can I add eSIM without WiFi
Yes, you will need a Wi-Fi (or data) connection to install your eSIM because it needs to be loaded onto your device. If you've purchased an eSIM to use on vacation, we recommend installing your eSIM about a day prior to leaving on your trip.
Do I need WiFi to activate a SIM
Quick steps: Activating a new SIM
Activate your new SIM card by using its accompanying activation key (this will be included in the package). You may need valid ID. Use this key to activate the SIM card online. You'll need an internet connection for this (use a computer or your WiFi).
Do you need Wi-Fi to activate eSIM iPhone
If you have an eSIM only iPhone 14 or iPhone 14 Pro model and you do not have a Wi-Fi network, Apple has a new solution to activate your eSIM. During the Setup process, you can choose to continue without Wi-Fi. This allows you to setup your new eSIM without Wi-Fi –at no cost to you.
Does iPhone 14 need Wi-Fi to activate eSIM
* iPhone 14 models that are eSIM only can activate without a Wi-Fi network.
Can you activate eSIM while abroad
While you're abroad, you can use a data-only eSIM as your secondary line and have two active eSIM plans on supported iPhone models. The capabilities on your primary line will continue to work when you add a data-only eSIM and use it for cellular data.
Does Vietnam have eSIM
All big mobile network operators in Vietnam, consisting of Viettel, Vinaphone, MobiFone, and Vietnamobile are offering eSIM.
Do I need to turn on data roaming for eSIM
Should I turn on data roaming for using the eSIM plan Yes. Please make sure that [Data Roaming] for the secondary line (the eSIM plan you've added) is turned on to use data with eSIM. To turn it on, go to [Settings] – [Cellular] and turn [Data Roaming] on as the instructions below.
Why eSIM is not popular
Extra costs and limited compatibility. Another problem with eSIMs is the extra cost. Most carriers only offer free eSIMs on more expensive plans, leaving many other customers with extra charges for switching from a plastic SIM card to an embedded SIM.
What causes an eSIM to fail
The most likely reason for eSIM activation failure is that your phone is actually SIM locked. Please check if your device has SIM restrictions.
Can I add eSIM without Wi-Fi
Yes, you will need a Wi-Fi (or data) connection to install your eSIM because it needs to be loaded onto your device. If you've purchased an eSIM to use on vacation, we recommend installing your eSIM about a day prior to leaving on your trip.
How does eSIM work
An eSIM is an industry-standard digital SIM that allows you to activate a cellular plan from your carrier without having to use a physical SIM. You can install eight or more eSIMs on an iPhone and use two phone numbers at the same time.
Can I install eSIM without Wi-Fi
Setting up an eSIM requires an internet connection, so make sure you are connected to Wi-Fi before you start this process. Add the new data plan – Go to Settings > Mobile Data > Add Data Plan. If you can't see these options in your phone's settings menu, this may be due to the model of phone you have.
How does eSIM work in Vietnam
Your device must be connected to the Internet when you install the eSIM on your device. Your primary sim data should be turned off when your data eSIM is in use (you probably don't want to pay roaming fee). Validity of your eSIM starts from the time you activate it, so don't activate your eSIM until you are in Vietnam.
What eSIM to use in Vietnam
5.5 Comparison of eSIM providers for Vietnam
| Provider | Network | Pros |
|---|---|---|
| Airalo | VinaPhone | + Good coverage by Vinaphone + Can be topped up + Automatically connected when the network is detected |
| GetNomad | TruPhone | + Good coverage by Viettel, Vinaphone and MobiFone + Automatically connected when the network is detected |
Can I activate eSIM while on international roaming
If your device has an eSIM card, all you have to do is buy a data plan in the country where you're traveling. You can then use a QR code to activate that plan via the eSIM card on your cellular device. Just like that, you're able to use your own phone like anyone else in a foreign country.
What is the disadvantage of eSIM
Currently, eSIM is supported by limited premium phones which are not affordable to everyone. Average users can't use an eSIM without burning a small hole in their pockets. If one does switch to eSIM, there will be limited phone options.
