eSIM Calls, SMS, Hotspot and Dual SIM

Yes, if the eSIM plan includes voice service. An eSIM from a mobile carrier can support ordinary phone calls just like a physical SIM. A data-only travel package provides internet access without its own cellular calling service.

Before buying, check whether the package includes a usable phone number, incoming and outgoing calls, and minutes for the countries you need to call. With a data-only package, you can make internet calls through supported apps.

A data-only eSIM does not receive ordinary cellular calls on a number of its own. You can receive internet calls through apps such as WhatsApp or FaceTime when your connection and the service are available.

Calls to your existing home number still depend on your home line and its supported services. Installing a travel eSIM does not forward those calls to it. See how to keep your primary number working.

Yes, when the plan includes SMS service. A data-only eSIM does not provide ordinary SMS just because messaging apps work over its connection.

On a Dual SIM phone, you can use the travel eSIM for internet access and a separate active line for SMS. Messages sent through that other line follow its carrier’s pricing and roaming terms. WhatsApp and iMessage use internet data; they do not add an SMS allowance to your travel package.

Usually, if the line associated with your account’s registered number remains active and can receive SMS at your destination. The travel eSIM can provide mobile data while that line receives verification codes.

Ordinary SMS reception does not require mobile data roaming, but your home carrier must support service abroad. Check its SMS and roaming conditions before departure. Code delivery can still fail because of carrier or account restrictions, so set up an authenticator app or backup codes where the service offers them.

Some do, but many travel eSIMs are data-only and do not include a number you can use for ordinary calls and SMS. A package for a particular country does not automatically give you a local phone number.

Check the country code, included calling and texting services, and whether the number works through the phone’s normal dialer or a separate app. Do not assume every number can receive bank verification codes. Our guide to eSIMs with phone numbers explains the options.

Yes. You can usually keep WhatsApp registered to your existing number while a travel eSIM supplies the internet connection. You do not need to use Change Number just because you temporarily change your data SIM.

Messages and calls use your available data connection. If WhatsApp asks you to verify your account again, you may need access to the registered number for a code or call. Set up the app before traveling and keep a way to access that number.

Yes, where the services are available. A travel eSIM can provide data for FaceTime and iMessage, but a data-only plan does not create a new phone number for them.

On recent iOS versions, check Settings > Apps > Messages > Send & Receive and Settings > Apps > FaceTime to confirm the number or Apple Account email you want to use.

Activating a phone number requires an active associated SIM and SMS, which your carrier may charge for. A verified Apple Account email is another option. See Apple’s activation guidance.

Often yes, if your exact plan and phone support it. Hotspot, also called tethering, lets another device use the phone’s mobile data connection.

Select the travel eSIM for mobile data before enabling Personal Hotspot or Mobile Hotspot. Check the package’s tethering policy: sharing may be included, limited or unavailable. Our Saily and Airalo hotspot comparison explains the kinds of plan conditions to compare.

No. Unlimited phone data does not necessarily mean unlimited hotspot data at full speed. A package can have a separate tethering cap, share a high-speed allowance between devices, reduce speeds or restrict tethering altogether.

Read the hotspot allowance, fair-use policy, reduced speed and reset schedule for the exact package. Do not assume the rules are identical across a provider’s destinations. See our unlimited travel eSIM guide for the limits to check.

First establish whether the problem affects the phone’s internet connection or only the connected device:

1. Turn Wi-Fi off on the phone and check that mobile data works through the travel eSIM.
2. Confirm that your package permits hotspot use and has usable data or tethering allowance remaining.
3. Enable hotspot and connect the other device to the correct network using the displayed password.
4. If the provider requires an APN or a separate hotspot APN, follow its exact instructions.
5. Restart the phone and the device you are connecting, then try again.

If the phone itself cannot get online, start with the eSIM troubleshooting FAQ. Do not delete the eSIM as an initial fix.

Yes, if tethering is supported by your phone and package. The laptop does not need its own eSIM support.

1. Select the travel eSIM as the phone’s mobile data line.
2. Enable a password-protected Wi-Fi hotspot.
3. On the laptop, join that network and enter the password.

USB and Bluetooth tethering are alternatives on compatible phone and computer combinations. The laptop’s traffic counts toward the applicable mobile data and hotspot limits, so check background downloads before connecting.

Hotspot does not automatically double the data used. However, a connected laptop or tablet may download updates, sync cloud files or stream higher-quality video, making the allowance disappear faster.

Pause large backups and updates, lower video quality, and enable a metered connection or Low Data Mode where available. Check usage in the provider’s app or account as well as on your devices. Our travel eSIM data guide helps you estimate an allowance for all connected devices.

Yes, on phones that support this Dual SIM combination. Your exact model and regional version must have a physical SIM slot and support an active physical SIM alongside an eSIM. Using different carriers may also require an unlocked phone.

A common setup keeps the home SIM available for calls and texts while the travel eSIM handles data. Check your model before buying: some versions are eSIM-only or have different limits. See our guide to using an eSIM and physical SIM together.

Yes, on supported phones and carrier configurations. Storing several eSIM profiles is different from keeping two active at once. Check the active-line limit for your exact model, regional version and software.

Even with two active eSIMs, phones typically use one selected line for mobile data at a time. The setup does not automatically combine both plans’ allowances or speeds. The device compatibility FAQ covers the checks to make before adding another plan.

Dual SIM Dual Standby, or DSDS, keeps two lines available while the phone is idle. It does not guarantee that both remain reachable during a call.

When one line is in use, calls to the other may go to voicemail or be unavailable. Some devices support additional calling options through carrier Wi-Fi Calling and data settings. Behavior varies by model and operator; Google’s Pixel Dual SIM guide shows why the exact device matters.

Choose the line with a suitable data allowance for your destination. If you bought a travel eSIM for the trip, select it as the mobile data line; if your home plan already includes suitable roaming, compare the included terms first.

When using the travel eSIM, keep data roaming off on the home line and disable optional automatic data switching if you want to control which line supplies data. Set roaming on the travel line according to its provider’s instructions. See the travel and roaming FAQ.

Some phones offer automatic data switching, but the trigger and restrictions vary. A feature may support data during calls, respond to coverage changes or provide a backup connection; it may not work while roaming.

For deliberate control over data use, disable optional switching or backup-data features and select the intended line yourself. The trade-off can be losing mobile data or second-line calling during a call. Check the instructions for your phone and carrier rather than assuming switching always works abroad.

Yes, on supported Dual SIM phones. You can choose a default line for mobile data and a different line for ordinary calls. Depending on the phone, you can also choose the line for SMS.

Label the lines Home and Travel to make them easier to identify. Check the selected line before dialing or sending a message: some phones remember a previous choice for a contact. Choosing the travel line for data does not move ordinary calls to it. Apple’s Dual SIM guide explains the iPhone controls.

Installing a travel eSIM does not cancel, replace or transfer your home number. For ordinary calls and SMS, your home line generally needs to remain enabled with service at your destination, or use carrier-supported Wi-Fi Calling where available.

Turning off home-line data roaming does not block all roaming charges. Calls, outgoing texts and voicemail can still have charges under your carrier’s terms. Wi-Fi Calling also follows the carrier’s billing rules. App-based messaging is separate; see using WhatsApp with your existing number.

No. Turning off a line normally leaves its eSIM profile installed. You can enable it again later, provided the service and package are still valid.

Disabling a line does not normally pause the package’s validity period or cancel a subscription. Deleting the profile is a separate action and may require a replacement from the provider; do not assume the original QR code can be reused. Check the plans and validity FAQ and the installation and activation FAQ before removing a plan you may still need.