How to Avoid Roaming Charges in Uruguay (2026)

With dual SIM, you need to disable roaming on your home SIM specifically. On iPhone: Settings > Cellular > select your home SIM line > Data Roaming (off). Then set the eSIM as your primary data line under Cellular Data. On Android: Settings > SIM Manager > select home SIM > Data Roaming (off). The eSIM stays set to allow data. This prevents AT&T from charging $10/day while your Uruguay eSIM handles data through Antel. Both SIM lines stay active: home SIM for calls and texts, eSIM for data at $6.99 instead of carrier roaming rates.

A typical smartphone performs 15 background syncs per hour, each transferring 3-5 MB. That is 45-75 MB/hour in invisible data usage. At AT&T's $2.05/MB roaming rate on Antel, 8 hours of sleeping with roaming enabled costs $738-1,230. Even with AT&T Day Pass ($10/day), data caps at 2 GB can trigger overage throttling. Common background consumers: iCloud sync (50 MB/day), Google Drive (30 MB/day), email accounts (20 MB/day), push notifications (10 MB/day), and app updates (100+ MB when queued). Disable all background activity before arriving in Uruguay or install an eSIM at $6.99 and let apps sync at flat-rate pricing.

Your phone connects to Antel and AT&T charges $2.05/MB without a plan. A single 50 MB background sync costs over $100. With AT&T International Day Pass, you pay $10 the moment any data is used, even a push notification. Act immediately: turn on Airplane Mode, go to Settings > Cellular > Cellular Data Options > Data Roaming and switch it off, then disable Airplane Mode. Your home SIM resumes voice and SMS without data. Install an eSIM ($6.99 for 1GB on Antel) to restore data access. Call your carrier within 48 hours because AT&T and Verizon both waive first-time roaming overcharges if reported in the same billing cycle.

Yes. An eSIM connects to Antel, the same network infrastructure AT&T and Verizon use for roaming in Uruguay. You get identical towers, identical coverage area, and the same 4G LTE speeds. The only difference is billing: your carrier charges $10/day or $2.05/MB for roaming access to these towers, while the eSIM charges $2.74/GB for the same connection. There is no coverage penalty for using an eSIM. In many cases, eSIM data speeds are faster because carrier roaming agreements sometimes throttle international users to lower priority.

AT&T and Verizon charge Day Pass fees per line, not per account. A family of four on AT&T Day Pass pays $40/day in Uruguay, totaling $280 for a 7-day trip. Children's phones are particularly risky because apps and games download updates in the background. One child's iPad streaming a YouTube video at $2.05/MB racks up $400+ in under an hour. Four eSIMs on Antel cost roughly $71.96 total for 3 GB each. Share one eSIM's hotspot to cover all devices and cut costs further.

No. Your WhatsApp number is linked to your home phone number, not your data SIM. Installing an eSIM for Uruguay data does not affect your WhatsApp registration. Keep your home SIM active in the second SIM slot for SMS verification if WhatsApp ever re-verifies your number. All your chats, groups, and contacts stay exactly the same. The eSIM on Antel at $6.99 provides the data connection for sending and receiving messages. Your home SIM provides the phone number identity. Both work simultaneously through dual-SIM on any modern smartphone.

Your home number stays fully active. With dual-SIM setup, your home SIM keeps your phone number for calls and texts while the Uruguay eSIM handles data on Antel. You receive calls on your home number. SMS messages arrive normally. Data routes through the eSIM at $6.99 instead of your carrier's $10/day roaming. On iPhone, set Cellular Data to the eSIM line and Default Voice to your home SIM. Both lines work simultaneously. Your home number is not affected by the eSIM installation and remains active throughout your entire trip.

Coverage depends on Antel's infrastructure outside urban areas. 4G LTE is available in major cities and populated areas. Rural regions may fall back to 4G or 3G. This is the same coverage map AT&T and Verizon roaming use because they connect to Antel's towers. Check Antel's coverage map before departure for your specific destinations. An eSIM at $6.99/GB gives you the same rural coverage as carrier roaming at a fraction of the cost. If your itinerary includes remote areas, download offline maps before leaving WiFi coverage.

Complete setup before departure: (1) Disable Data Roaming on iPhone: Settings > Cellular > Data Roaming (off); Android: Settings > Connections > Mobile Networks > Data Roaming (off). (2) Turn on Airplane Mode before landing to block automatic carrier attachment to Antel. (3) Activate your pre-installed eSIM on local WiFi or after landing. (4) Set your home SIM to calls-only or data-off. Your home number stays active for calls and SMS; the eSIM handles all data without triggering your carrier's $10/day roaming rate.

No. AT&T International Day Pass and Verizon TravelPass both cost $10/day, activated the moment any background app touches your data connection. A 7-day Uruguay trip costs $70 in carrier add-on fees. A Uruguay eSIM for the same 7 days costs $54.80 on 20GB, which is 22% cheaper with no activation risk from background data. Carrier add-ons are only worth considering for single-day trips where eSIM installation is not feasible.

Ship WiFi packages are the correct tool for internet access at sea. Plans range from $15-35/day for basic browsing to $35-60/day for streaming packages. Disable cellular data and use WiFi only while at sea. Ship WiFi works for messaging apps, email, and light browsing. Video calls and streaming require higher-tier packages. The limitation: ship WiFi does not work during port stops when you are ashore in Uruguay. For port days, use your eSIM at $6.99 on Antel's shore network. Airplane Mode plus ship WiFi at sea, eSIM on shore, eliminates all surprise maritime or carrier roaming charges.

Yes. Reset your phone's data statistics on arrival so all consumption tracked reflects only your Uruguay trip. On iPhone: Settings > Cellular > scroll to the bottom > Reset Statistics. This zeroes out the "Current Period" counter. On Android: Settings > Connections > Data Usage > tap the three-dot menu > Reset Statistics. After resetting, every MB counted belongs to your time on Antel in Uruguay. This makes it easy to track how much of your eSIM plan at $6.99 you have consumed without arithmetic from a previous trip or home usage. Check the counter each morning to gauge your daily consumption rate.

Yes. Your phone does not need to be in your hand to trigger roaming charges in Uruguay. Background processes sync email, update weather, refresh social feeds, and ping location services automatically through Antel. AT&T International Day Pass activates the moment any data crosses the connection, even a single push notification received while your phone sits in your pocket. That costs $10 for the calendar day. Disable data roaming before landing: Settings > Cellular > Data Roaming (off). Without this step, your phone generates charges from Antel without you touching it. An eSIM at $6.99 handles all background syncs at flat-rate pricing.

Yes. FaceTime uses your Apple ID for identification, not your data SIM. Your FaceTime caller ID shows your home phone number or email regardless of which SIM provides data. A FaceTime video call through the Uruguay eSIM on Antel uses approximately 3-8 MB per minute. The call recipient sees your normal number. FaceTime audio calls use 1-2 MB per minute. Keep your home SIM active for Apple ID verification. Set your eSIM as the cellular data line in Settings > Cellular. FaceTime routes through the eSIM data at $6.99 with no change to your caller identity.