eSIM California: Prepaid Data Plans
California eSIM plans start at $3.49 for 2 GB; our top plan for California alone is 50 GB for 30 days at $39.99 (eSIMGo), the top multi-country one 20 GB at $16.99 (2 countries). 102 plans from 7 vetted providers on Verizon, AT&T, T-Mobile, and U.S. Cellular, 5G on 49 plans. Prices updated ·
California eSIM at a glance
NextLink
3-15 days
Unlimited
Starting from
$1.80 per day
🇺🇸 United States & 🇺🇸 Hawaii
MobiMatter Rewards
EXCLUSIVE
Get up to $5 for every friend referred
MobiMatter Rewards
EXCLUSIVE
Get 10% cashback with every purchase
Your USA trip.
Connected.
Choose your travel eSIM and manage it in the MobiMatter app.
Networks used by California eSIMs
Each plan connects to the networks listed on its page, so you choose your carrier before you buy. Coverage varies by area: a listed network does not guarantee signal everywhere.
Frequently Asked Questions
Is there a separate eSIM for California?
No. California is part of the United States, so any USA plan works there, from Los Angeles and San Francisco to San Diego, as do North America plans. The plans connect to Verizon, AT&T or T-Mobile; coverage is best in cities and along highways and can be patchy in remote areas. The country list on each plan page shows where it works.
Reviewed Oct 8, 2026 · Source
What is the cheapest eSIM for California?
The cheapest plan that works in California is a multi-country one: $3.49 for 2 GB, valid for 15 days. The cheapest plan for California alone is 2 GB for 15 days at $3.99. Prices come live from 7 vetted providers and change often.
Is it worth getting an eSIM for California?
For most travellers, yes, if your phone supports eSIM. California plans start at $3.49 for 2 GB, and the longest lasts 365 days, which suits long stays and repeat visits. If your home plan already covers California at no extra cost, you may not need one.
Which networks do California eSIMs use?
California eSIMs on MobiMatter run on Verizon, AT&T, T-Mobile, and U.S. Cellular; 5G plans are available on Verizon, AT&T, and T-Mobile. Verizon carries the most plans. Each plan names its network, so you choose your carrier before you buy.
Which eSIM is best for California?
For California alone, our top plan right now is 50 GB for 30 days at $39.99 from eSIMGo. If California is one stop of several, the top multi-country plan is 20 GB for 30 days at $16.99 from Three Hong Kong, covering 2 countries.
How much data do I need for a week in California?
It depends on how you use your phone. Light use (maps, messaging, browsing) takes about 0.5–1 GB a day; scrolling a lot of social video can take 2–3 GB or more. Typical use per hour:
- Instagram Reels, TikTok: 0.3–1 GB
- YouTube, Netflix at standard quality: 0.5–1 GB
- Video calls (WhatsApp, FaceTime): 0.5–1 GB
- Voice calls (WhatsApp, FaceTime Audio): 50–70 MB
- Maps and navigation: 2–6 MB
- Messaging and browsing: 50–150 MB
The cheapest California plan with at least 5 GB for a week or longer is 5 GB for 30 days at $5.99.
Is there an unlimited data eSIM for California?
Yes. Unlimited data plans for California start at $25.99. Many unlimited plans slow down after a daily high-speed allowance, so check the fair-use terms on the plan page before you buy.
Do California eSIMs support 5G and hotspot?
5G is available on 49 plans for California, where the local network has 5G coverage; the others use 4G/LTE. Hotspot (tethering) works on every plan, so you can share your data with other devices.
Does a California eSIM come with a phone number?
Most travel eSIMs, including most California plans, are data-only and have no local number. You keep your usual number on your main SIM for calls, texts and WhatsApp. Plans that include a number or minutes say so on the plan page.
Will my phone work with a California eSIM?
Yes, if it supports eSIM and is not locked to a carrier. To check, dial *#06#: if an EID number appears, your phone supports eSIM. Most iPhones from the XS/XR on, Galaxy S20 and later and Pixel 3 and later do, except most models sold in mainland China and some sold in Hong Kong and Macao.
How it works
- 1
Checkout using secure payment methods
Get your eSIM by email within seconds.
- 2
Install eSIM
Instantly get your eSIM and configure it in your eSIM compatible device
- 3
Enjoy high speed connectivity
Once eSIM is configured, you can enjoy high speed roaming data connectivity
Why get your California eSIM from MobiMatter
All your eSIMs in one app
Buy, install and top up every eSIM in the MobiMatter app, and check how much data you have left at any time.
Choose your network
MobiMatter shows which network each plan uses, so you choose your carrier before you buy. Pick from 102 plans from 7 vetted providers with the data and price that fit your trip.
24/7 support
Our support team is available 24/7, before and after you buy, for every eSIM you get from MobiMatter.
What our customers say
5.0
Mentions Californiabest deal I could find for short term of data in the usa
MMarc Kaplan (BobTeatow)
Play Store5.0
Mentions CaliforniaAwesome service. I have traveled back-and-forth between the United States and the Philippines and this app has not let me down. I strongly suggest that you check your data roaming option so this way you don’t mess up what you need to do.
WWhatshisface913
App Store5.0
Easy to install an to use. I install prior to my trip and once I arrived it connected automatically, no hassles for me.
LLeclerc Julien
Play Store5.0
I've tried so many esim apps, but MobiMatter is always the cheapest and with the best overall packages. Great customer service as well. Highly recommended!
TTorbjornhb
App Store5.0
We have used it many times and have had no problems.
Translated from Turkish
HHatice özkan
Play Store5.0
very versatile packs , plans i can choose as per regional or international. Support team is very quick in response and very helpful. i have been using the app for few years already , very well sorted app.
JJashan sohal
Play Store5.0
I have been using it for about 2 years and I am very satisfied. I used it in Greece, Bulgaria, and Romania, and I experienced internet speeds that I haven't seen in Turkey.
Translated from Turkish
SSebahattin Akbulut
App Store5.0
Everything is good. Even if problems arise, the service team does everything to resolve them. Although difficulties occur very rarely.
Translated from Russian
VV.P.@1234-8885
App Store5.0
"I visited 6 Balkan countries and didn't have any problems, I highly recommend it, thank you 🤍"
Translated from Turkish
BBettyyy29
App Store5.0
I used it in Italy in 2024 and in Spain in 2026, and I was very satisfied. The app has improved day by day, and I never experienced any issues. I don't know about other apps, but I highly recommend MobiMatter. I bought 15GB of internet in Spain, and even though I didn't use that much, I still have 10GB left.
Translated from Turkish
GGlpyvz
App Store5.0
This is a fantastic site. I purchased it from NextLink's data provider package during my Umrah pilgrimage to Saudi Arabia. It has excellent reception everywhere, including the Metaf area... highly recommended.
GGökhan ALTAN
Play Store5.0
I bought the eSIM for a holiday in Tibet. Everything was great; with the integrated VPN I was able to access all the sites that are normally blocked in China (Google, WhatsApp, etc.).
PPeter Paulus
Play Store
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