CES Las Vegas: Which eSIM Do You Actually Need?

You're flying into Las Vegas for CES [VERIFY: dates January 5–8, 2027]. The moment you land, you need data — for the rideshare from the airport, for the maps across the convention floor, for the Slack messages that don't stop just because you crossed a time zone. You also might need a US phone number so that two-factor authentication codes from your bank or work apps actually arrive.

Here's how to get both, without overpaying.

Data eSIM vs. US phone number — know the difference

A data eSIM gives you a US data connection. You keep your home SIM in the phone at the same time, so your home number still works for calls and texts. This is what most CES attendees need.

A US phone number is a separate product. It gives you an actual +1 number on either AT&T or T-Mobile. You need this only if you specifically need to receive US SMS — for example, verification codes from a US bank, a US brokerage, or any app that validates a phone number before letting you log in from abroad.

You can have both on the same phone at the same time. Your phone just needs to support dual-SIM (physical SIM + eSIM, or dual eSIM).

Which data plan is right for a four-day show?

CES runs [VERIFY: four days]. Here's what's available for the US:

• 1,000 MB · 7 days — $2.81. Tight. Fine if you're mostly on the convention centre Wi-Fi and just need a backup. One day of heavy Maps and email use can eat this.
• Unlimited · 1 day — $3.43. Useful if you're only in Vegas for a single day, or you want to stress-test before topping up. Not the right pick for the full show.
• USA 2 GB — $3.49. A reasonable floor for a four-day trip if you use hotel and venue Wi-Fi for anything heavy.
• USA 3 GB — $3.99. The one we'd recommend for most CES attendees. At $3.99 it costs almost nothing more than the 2 GB option and gives you real breathing room across four days of maps, ride apps, and messaging.
• TopUp USA 2 GB — $3.49 / TopUp USA 3 GB — $3.99. If you run out mid-trip, you can add more data to an existing plan without buying a whole new eSIM.
• Europe and USA 1 GB — $3.49. Only worth it if you're stopping somewhere in Europe on the way to or from Vegas and want one eSIM to cover both legs. The 1 GB shared across two continents goes fast.

For most people attending the full show: start with the 3 GB plan. If you're streaming video or doing large file transfers, buy a top-up before you run out rather than waiting until you're already offline.

How activation works — and when it won't

After you pay, you'll receive a QR code by email, usually within a few minutes. You scan it in your phone's eSIM settings and the data line is live almost immediately.

A few things to know before you land:

• Activate before you board, not in the customs hall. You can install the eSIM on your home Wi-Fi and have it ready the moment you land.
• Your phone must be carrier-unlocked and support eSIM. Most flagship phones sold in the last few years do, but phones sold locked to a specific carrier often don't. Check before you buy.
• Some phones only allow one eSIM at a time. If you already have an eSIM on your device, check whether you can add a second one.

US phone number: what's different about the activation

US number lines work differently from data eSIMs. There's no QR code. Instead, you give us your phone's EID (the eSIM identifier) at checkout, and the line is provisioned directly to your device over the air.

US carriers only activate lines during set hours:

• AT&T: approximately 7:00 AM – 11:00 PM Central Time
• T-Mobile: approximately 5:00 AM – 1:00 AM Central Time

If you order outside those windows — say, on the plane or late at night — the line won't activate until the window reopens. Plan accordingly. If you need that US number to clear a work VPN or banking app on your first morning in Vegas, order it at least a few hours before you land during an activation window.

Payment options

You can pay by card, PayPal, Alipay, WeChat Pay, or crypto. No account required to check out.

What this won't do

• The data eSIM does not give you a callable US number. You'll still receive calls and texts on your home SIM number as normal.
• Tethering and hotspot availability depends on the specific plan — [VERIFY: confirm which US plans allow hotspot].
• If your phone is locked to your home carrier, none of this works until you unlock it. Contact your carrier before you travel.