Guam

Yes, as long as you have an eSIM-capable, carrier-unlocked iPhone. That covers the iPhone XS, XR and every model since, including the SE (2020 and later) and the latest Pro and Pro Max ranges. After buying, you scan the QR code we email you to add the Guam eSIM as a second line, then keep your normal SIM for calls and texts. Your iPhone shows both lines side by side, so you simply set the Guam travel eSIM to handle mobile internet. If you are unsure whether your handset is unlocked, ask your home carrier before you fly. Our 24/7 support team can also confirm compatibility and walk you through setup before you land at Guam International Airport.

It does, provided the phone is eSIM-capable and carrier-unlocked. That includes the Samsung Galaxy S20 and newer, plus the Z Fold and Z Flip series, Google Pixel 3 and later, and many recent Android models from other brands. Installation is the same on every device: scan the QR code we email after purchase to add the Guam eSIM, then choose it as your data line in settings. Your existing SIM stays in place so you keep your usual number. Older or network-locked Android handsets may not support eSIM, so check your settings for an "Add eSIM" or "Add mobile plan" option first. If you cannot find it, our support team will quickly tell you whether your phone can run this prepaid data plan in Guam.

Your Guam eSIM connects to IT&E Wireless, giving you fast 5G data across the island. That means strong, reliable mobile internet in the busiest areas, including the capital Hagåtña and the hotel and resort district of Tumon. Because you are on a genuine local network rather than international roaming, speeds are quick and connections are stable for maps, streaming, video calls and sharing photos. The eSIM is data-only, so there are no native calls or texts, but everything you do online runs over IT&E Wireless coverage. You buy a prepaid amount of data upfront with no roaming fees, then simply use the eSIM as your main connection while exploring Guam and its villages.

Coverage on IT&E Wireless is strongest in and around Hagåtña and Tumon, where you will get fast 5G data for maps, messaging and streaming. Guam is a compact island, so the populated parts and main roads generally enjoy solid mobile internet, including areas near Tamuning, Dededo and the routes south toward villages like Inarajan and the beaches of Ritidian. As with any network anywhere, signal can dip in remote jungle, deep valleys or sheltered coves away from towns, so download offline maps before heading off the beaten track. For day-to-day travel, sightseeing and getting around the island, this Guam travel eSIM gives dependable prepaid data well beyond the two main hubs.

Setup takes only a few minutes. After purchase, we email you a QR code. On your phone, open Settings, then Mobile or Cellular, and choose "Add eSIM" or "Add mobile plan," then scan the QR code to install the Guam eSIM as a second line. We recommend installing before you fly while you have reliable Wi-Fi at home. The eSIM does not start counting validity or data until it first connects to the IT&E Wireless network in Guam, so installing early costs you nothing. Once you land, enable data roaming on the eSIM line, switch off roaming on your normal SIM, and you will be online. If anything looks unclear, our 24/7 support team can guide you through every step.

Yes, and we recommend it. Install the Guam eSIM at home using the QR code we email you, while you have a steady Wi-Fi connection. Installing in advance does not start your plan, because validity and your data allowance only begin when the eSIM first connects to the local IT&E Wireless network in Guam. This means you arrive ready to go, with no scrambling for airport Wi-Fi or a tourist SIM kiosk after a long flight across the Pacific. When you touch down, simply turn on the eSIM line, switch your home SIM's roaming off, and your mobile internet activates automatically. Setting everything up beforehand is the easiest way to stay connected from the moment you reach Guam.

For most travellers, yes. Standard international roaming on your home plan can charge steep per-megabyte rates in Guam, and costs add up fast with maps, social media and streaming. A GulfData travel eSIM instead gives you a flat prepaid plan known upfront, with no roaming fees and no surprise bill when you get home. You choose the data bundle that fits your Guam trip and pay once. If you run low, you simply add another plan as a top-up rather than overpaying for a big allowance you might not use. That predictability is the main reason visitors pick a prepaid eSIM over roaming for mobile internet in Guam, especially on longer island stays or multi-stop Pacific itineraries.

It depends on how you use your phone. For a week in Guam built around maps, messaging, browsing and social media, many travellers find a mid-size bundle comfortable. If you stream video, make frequent video calls or rely on your eSIM as a hotspot for a laptop, choose a larger allowance. As a rough guide, light users might use around 300 to 500MB per day, while heavier users can pass 1GB daily. The good news is you are never locked in: start with a plan that feels right, and if you run low you add a top-up in minutes. Hotel and resort Wi-Fi in Tumon can also cover heavy downloads, stretching your prepaid Guam data further.

Yes. The Guam eSIM is data-only, which means there are no native calls or texts, but apps that run over data work perfectly. You can use WhatsApp, FaceTime, iMessage, Messenger and other VoIP apps to call and message friends and family while you travel. Because the eSIM only carries data, your normal phone number stays active on your primary SIM in dual-SIM mode. Keep that line's roaming switched off to avoid charges, and it will still receive calls and SMS, including bank verification codes, over its own signal where available. So you get affordable mobile internet from the eSIM and keep your usual number reachable, which is ideal for staying in touch during a trip to Guam.

Yes, tethering is supported. You can turn on your phone's personal hotspot and share the Guam eSIM connection with a laptop, tablet or a travel companion's device. This is handy for working from your hotel in Tumon, uploading photos from a larger screen, or keeping several gadgets online while sightseeing. Any data used over the hotspot draws from the same prepaid allowance on your eSIM, so keep an eye on heavier activities like video streaming or large downloads, which use data quickly. If you expect to tether a lot, pick a bigger bundle from the start, or simply add a top-up when you run low. It is an easy way to get reliable mobile internet across multiple devices in Guam.

The best eSIM for Guam is one that connects to a strong local network, installs in minutes and gives you a clear prepaid plan with no roaming fees. The GulfData Guam travel eSIM ticks all three: it runs on IT&E Wireless with fast 5G data across Hagåtña, Tumon and the wider island, activates instantly by scanning a QR code, and lets you keep your normal number in dual-SIM mode. You can install before you fly, tether to other devices, and use WhatsApp and FaceTime over data. With flat upfront plans, easy top-ups and 24/7 support before and during your trip, it is a simple, reliable choice for staying connected as a tourist exploring Guam.