california-esim-data

Network

AT&T, T-Mobile

Speed

LTE/5G

Unlimited data

Get a local California eSIM flag

Downloadable California SIM card with prepaid data

Buy now
  • Provides data anywhere in United States
  • Includes a free international phone number. Learn more.
  • No surprise fees or roaming charges
  • Visiting California soon? Save money with a California eSIM (downloadable SIM card) with local data starting at just $4.50 a week.
  • Get cheap data: Install a California eSIM on your phone and activate your data package to enjoy a steady internet connection anywhere in California, without needing Wi-Fi.
  • Never pay roaming charges: Avoid carrier roaming charges by toggling off Data Roaming for your primary SIM, or toggling off your primary SIM entirely. Need help? We’re available 24/7.

Check phone compatibility

  • Supported networks: AT&T, T-Mobile
  • Expected speeds: LTE/5G
  • Limitations: Fully unthrottled dataUnlimited data
  • Data top-up available: Yes
  • Hotspot / Tethering: Yes
  • ID/documentation required: No
  • Phone number: Included with purchase

How does an eSIM work?

An eSIM is an embedded SIM card, and you probably already have an eSIM-compatible device. When you install an eSIM for a country or region, it lets your device connect to local networks in that area. This means your device will have data without needing Wi-Fi or paying roaming charges.

 

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FAQs about eSIM in California

Check your device

Most newer phones, tablets, and computers are already eSIM-compatible, so use our eSIM device checker to make sure you have a device that can accept an eSIM data plan.

Free Wi-Fi is great when it’s available and working well, but some destinations make it just about impossible to get a good connection. That’s why it’s nice to have data as a backup to stay connected.

We’re proud to provide aloSIM customers with fast eSIM data connections that allow them to talk, text, surf, and stream comfortably. You’ll likely experience a 4G (sometimes 5G) or LTE equivalent network in most locations, depending on what’s available in the area.

Installation guides

We have detailed eSIM installation instructions for all compatible devices, so whether you’re looking to add eSIM data to an iPhone or iPad, Google Pixel, Samsung Galaxy, or something else, we’ll be able to walk you through the eSIM set-up process easily.

Go ahead … travel the world, never pay roaming charges

Shop aloSIM in the app or online

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