California eSIM: Mobile Data in San Diego, Los Angeles and San Francisco

🇺🇸 California • USA eSIM plan

California eSIM: Mobile Data in San Diego, Los Angeles and San Francisco

A California eSIM provides prepaid mobile data in San Diego, Los Angeles, San Francisco and other covered areas of the state. It installs digitally on a compatible, unlocked phone without buying a physical SIM after arrival.

View USA eSIM plans · Read the eSIM installation guide

Which eSIM should you use in San Diego?

For San Diego, choose the USA eSIM plan. It can provide data for maps, transportation apps, reservations, messaging and tourist activities where a partner network is available. This California page covers the San Diego intent so a second competing page is unnecessary.

Coverage in California

The same USA plan can be used in San Diego, Los Angeles, San Francisco, Anaheim, Sacramento and other covered areas during its validity period. Coverage, speed and 4G or 5G availability vary by partner network, location, device and local conditions.

City trip or California road trip

For one city, estimate your daily needs. For travel between San Diego, Los Angeles and San Francisco, allow more data for maps, searches and reservations. Downloading offline maps before departure can also reduce usage.

How to prepare the California eSIM

  1. Confirm that the phone supports eSIM and is carrier-unlocked.
  2. Choose the validity period and data allowance of the USA plan.
  3. Install the eSIM before departure over reliable Wi-Fi.
  4. After arrival, select it for cellular data and follow its data-roaming instructions.
  5. Check the primary line separately so it does not use data abroad unexpectedly.

San Diego and California eSIM FAQ

Does an eSIM work in San Diego?

Yes, when a partner network included with the plan is available. Signal quality can vary downtown, inside buildings, near beaches and in more remote areas.

Can I use the same eSIM in Los Angeles and San Francisco?

Yes, the USA plan can work in multiple covered U.S. cities and states during its validity period.

Does the plan include calls and SMS?

The relevant VoyageSIM plans provide mobile data. Traditional calls and SMS on your primary line remain subject to your carrier’s charges.

Can I keep my Canadian number?

Yes, on a compatible dual-SIM device. Use the eSIM for data and review possible charges on the primary line.

When should I install the eSIM?

Installing it before departure is generally easier. The validity start varies by plan, so follow the instructions provided.