What is an APN：

APN stands for Access Point Name. It is a setting on your mobile device that allows it to connect to your carrier's network for internet access and multimedia messaging (MMS). These settings include IP addresses, gateways, and other technical details that enable the device to access the internet and send MMS.
Simply put, it allows you to surf the Internet~

why is it important：

Without the correct APN settings, your device may not be able to use mobile data or send MMS.

Here’s a step-by-step guide to configure APN settings on an Android device:

1. Open Settings:
   Launch the "Settings" app on your dev
2. Navigate to Network Settings:
   Go to "Network & Internet" or "Wireless & Networks"
    (varies by device, In this case, select pixel 2xl).
   
3. Access Mobile Network:
   Tap "Mobile Network" or "Cellular Network".
   
4. Find APN Settings:
   Look for "Access Point Names (APN)" or simply "APN".

Edit or Add an APN:
You’ll see a list of existing APNs. Tap one to edit, or press the"+"button to add a new one.

Enter APN Details:
Input the information provided by your carrier, such as:
Name: A label for the APN (e.g., "My Carrier Internet").
APN: The network address (e.g., "internet" or "mms").
（When you buy an eSIM for Sigma Mobile and purchase the corresponding destination eSIM product, you will receive an email containing a QR code, APN value, and other product-related information. It is recommended that when setting the APN, The name can be customized, and the APN value must be correct.）
Other： Username and Password: If required by your carrier. （There is no need to fill in the esim of Sigma Mobile）

Save and Activate:
Save the settings, then select the new or edited APN from the list.

For iPhone or iPad users, follow these steps:

• Open Settings:
  Open the Settings app.
• Go to Cellular Settings:
  Tap "Cellular"(or "Mobile Data" in some regions).
• Access Cellular Data Options:
  Select "Cellular Data Options"(or "Mobile Data Options").
• Find APN Settings:
  Tap "Cellular Data Network"(or "Mobile Data Network").
• Enter APN Details:
  Fill in the fields with your carrier’s details:
      APN: The network address.
  The email sent by Sigma mobile contains a QR code, APN value, and other related information. Just copy the APN value in the email to the corresponding location. (The name can be customized)
  Username and Password: If provided by your carrier.
• Save the Settings:
  Press "Back" or "Done" to save. The changes apply automatically

This could be due to incorrect APN settings. Verify that your APN matches your carrier’s specifications and ensure mobile data is enabled in your settings. If the problem persists, reset the APN to default or contact your carrier.

• Our eSIM primarily provides data services for the country of your destination and does not facilitate local or international calls directly.

• You can make calls through VoIP apps like WhatsApp or Skype, which utilize your data plan.

• For iPhone users, services such as iMessage and Facetime are also accessible via our eSIM.

• In the event that you need to receive text messages from your bank, for instance, for cash withdrawal purposes, we suggest you get in touch with your bank. They can arrange for these messages to be delivered to your email address, ensuring you don't miss any important notifications.

No, each carrier has unique APN settings tailored to its network. Using incorrect APN settings can cause connectivity issues, so always use the settings provided by your current carrier.