The best international phone plans for frequent travelers

International phone charges catch people off guard in two ways. The first is the straightforward case: someone with a standard carrier plan lands abroad, uses data without thinking, and comes home to a bill with $200 in roaming charges. The second is subtler: someone adds international coverage, pays $10 to $15 per day, and spends more over a two-week trip than a dedicated international SIM would have cost.

There is no single right answer. The best approach depends on how often you travel, how many countries you visit, and how much data you actually need.

Best for frequent travelers: Google Fi Simply Unlimited

Google Fi automatically connects to local partner networks in over 200 countries. You do not need to enable roaming, purchase a day pass, or change any settings. Data works at reduced speeds (up to 256 kbps on the standard data tier, or up to 20 Mbps on the plus tier), which is enough for navigation, messaging, and web browsing but not for streaming. Calls are billed at 20 cents per minute from abroad, or free over Wi-Fi using the Fi app.

The Fi Simply Unlimited plan is $65 per month. For someone who travels internationally four or more times per year, the math usually works in Fi's favor compared to adding day passes to a standard carrier plan. For occasional travelers, the monthly cost may be harder to justify.

Best if you are already on T-Mobile: Go5G Plus

T-Mobile Go5G Plus includes unlimited texting and data in 215+ countries at no extra charge. The data is throttled to 128 kbps abroad - slower than Fi's international option - but sufficient for maps, messaging apps, and basic web use. Calls from abroad cost 25 cents per minute, or you can use Wi-Fi calling over the T-Mobile app at no charge.

For T-Mobile customers who travel a few times per year and do not need fast international data, this is the most convenient option because it requires no action - it just works when you land.

Best budget option: Airalo eSIM

Airalo is a marketplace for eSIMs from local carriers around the world. Before traveling, you purchase an eSIM data plan for your destination - typically $5 to $15 for 1 to 3 gigabytes over 7 to 30 days - and install it on your phone without touching a physical SIM card. Your US number remains active on your primary SIM for calls and texts while the Airalo eSIM handles data.

This is the cheapest per-day option for most destinations and it works well. The limitation is that it requires a phone that supports eSIM (most phones from 2020 onward do) and some upfront setup before you leave. It also does not include voice calls on the local number - you are relying on Wi-Fi calling and messaging apps for anything beyond your US number.

Day passes from major carriers

Verizon TravelPass and AT&T International Day Pass both cost $10 per day and activate automatically when you use your phone abroad. They give you access to your normal plan's data allowance for that day. They are convenient and work immediately without any setup, but they add up: $10 per day over a 10-day trip is $100, more than a month of Airalo data would cost for the same trip.

Day passes make sense for short trips of two to three days where the convenience is worth the price premium. For longer trips, a dedicated international plan or Airalo eSIM is almost always cheaper.

What to do before you leave

Confirm your phone is unlocked - locked phones cannot use international SIMs or eSIMs from other carriers. Most phones purchased at full price or that have been paid off are unlocked. Call your carrier to confirm if you are not sure. Enable Wi-Fi calling on your US line before you leave, which lets you receive calls on your US number over Wi-Fi abroad at no roaming charge.