FAQ

Here are the most frequently asked questions. If you can't find what you are looking for, please free to contact our customer service hello@bigesims.com

Is a BIG eSIM compatible with my phone?

iOS: You must have iOS 12.1 or later and an unlocked iPhone. Any iPhone older than XR or XS supports eSIM. (Note: When you buy a device with a contract from a mobile operator, it is common practice for them to lock the connectivity from any other supplier. In this case, your device will be considered "locked," at least until your contract expires. You can check with your operator to see if there is anything you can do to unlock the eSIM in your device.) Samsung, Pixel, and many Androids support eSIM.

In what scenarios can BIG eSIMS service be used?

Here are a few of the many ways you can use our eSIM:

  1. Add a local data plan when you travel outside of a country or region.
  2. Use BIG eSIM for Data and keep your voice line separate
  3. Make calls using WhatsApp Data or similar Apps

How to Set up BIG eSIMS for iOS?

  1. Purchase the eSIM data plan on our website.
  2. Receive the eSIM QR code instantly by email.
  3. Set up your eSIM profile as follows:
    • Go to your device [Settings] > [Cellular or Mobile Data] > [Add Cellular Plan].
    • Scan the QR code provided by email.
    • Tap [Add Cellular Plan].
    • Choose [Secondary] Label and change the name to "eSIM."
    • Select the option for "Use eSIM for cellular data only" and tap [Continue].
    • Select the option for ‘Use Primary as the preferred line’ and tap [Done].
  4. Check if the APN Name matches with the eSIM order: Tap on eSIM > [Cellular Data Network] > [Cellular Data] > [APN].

How to Set up BIG eSIMS for Android?

  1. Purchase the eSIM data plan on our website.
  2. Receive the eSIM QR code by email.
  3. Set up your eSIM profile as follows:
    • Go to your device [Settings] > [Network & Internet] > [Mobile Network].
    • Tap "Download a SIM instead?" > Download your SIM > Tap [Next].
    • Scan the QR code provided by email.
    • Tap [Download] and [Done].
  4. Check if the APN Name matches with the eSIM order: Tap "eSIM" and tap [Advanced] > Tap [Access Point Names] > [APN].

What payment methods do BIG eSIMS support?

Currently, PayPal, Visa, Mastercard, and other major credit cards are all accepted.

How fast is the network speed?

3G,4G/LTE and some 5G service is available in most countries and continues to be covered in more countries.

Are voice calls and SMS included?

Only data service is available.

How to use dual SIM on iPhone and set up your cellular plan with BIG eSIMS?

Dual SIM on iPhone offers you the freedom to get separate voice/SMS and data plans. At this stage, only cellular data is available on our eSIM platform. Therefore, after you scan a QR code to add the eSIM, please label it "Secondary" on the "Cellular Plan Labels" page, and then go to the "Default Line" page, choose "Use [Secondary] for cellular data only." You will see a little pop-up "Uncertified Cellular Plan," just click "OK."

For more questions about Dual SIM, please check the official document on Apple's website: Apple Dual SIM Support.

Should I switch on Data Roaming when using eSIM?

Yes, please make sure that Data Roaming is on. Please go to "Settings" > "Cellular" and turn on "Data Roaming." Please also remember to turn it off after use.

How to remove the BIG eSIMS data plan after use?

You can use your phone's delete eSIM function.

How do I get my BIG eSIM after payment?

You will receive an instant email with your QR code. Please check spam if you have not received it after 1 minute.

How is the validity period of the plan calculated?

The actual usage time of some data plans may start according to your eSIM's first connection. We will describe this in the package information.

How to check the balance of remaining data?

For some packages, you can view the data usage in the order, and for some orders, you cannot view the data usage. You might go to [Settings - Cellular] on your iPhone to find out how much cellular data you're using.

Can I have multiple phones scan the same QR code?

No, but the same device can rescan the same QR code.

If I lost my eSIM QR code, what can I do?

Check your email or contact us.

Will my physical SIM still work while eSIM is installed?

Yes, your physical sim can still work.  We suggest turning off data roaming and turning on "WiFi calling".