Cheapest eSIM for Guam
| Rank | Provider | Data | Validity | Price (USD) | Price per GB | Verdict | Get |
|---|---|---|---|---|---|---|---|
| 1 | MegaEsim Coupon: SUMMER10 |
20 GB | 30 Days | $58.16 | $2.91 | Best value | Get |
| 2 | MegaEsim Coupon: SUMMER10 |
3 GB | 15 Days | $9.31 | $3.10 | Great | Get |
| 3 | MegaEsim Coupon: SUMMER10 |
5 GB | 30 Days | $15.51 | $3.10 | Great | Get |
| 4 | MegaEsim Coupon: SUMMER10 |
10 GB | 30 Days | $31.01 | $3.10 | Great | Get |
| 5 | MegaEsim Coupon: SUMMER10 |
3 GB | 30 Days | $9.88 | $3.29 | Great | Get |
| 6 | MegaEsim Coupon: SUMMER10 |
1 GB | 7 Days | $3.49 | $3.49 | Great | Get |
| 7 | MegaEsim Coupon: SUMMER10 |
1 GB | 1 Day | $3.49 | $3.49 | Great | Get |
| 8 | MegaEsim Coupon: SUMMER10 |
3 GB | 1 Day | $11.34 | $3.78 | Good | Get |
| 9 | MegaEsim Coupon: SUMMER10 |
1 GB | 3 Days | $10.46 | $10.46 | Expensive | Get |
| 10 | MegaEsim Coupon: SUMMER10 |
3 GB | 3 Days | $34.02 | $11.34 | Very expensive | Get |
| 11 | MegaEsim Coupon: SUMMER10 |
3 GB | 7 Days | $79.38 | $26.46 | Very expensive | Get |
| 12 | MegaEsim Coupon: SUMMER10 |
1 GB | 15 Days | $52.29 | $52.29 | Very expensive | Get |
| 13 | MegaEsim Coupon: SUMMER10 |
1 GB | 30 Days | $104.58 | $104.58 | Very expensive | Get |
Cheapest eSIM for Guam: the numbers
As of 30 August 2026, 21:31 GMT, the cheapest eSIM for Guam is MegaEsim with 20 GB for 30 Days at $58.16. That is $2.91 per GB, the best rate of the 13 plans we compare from 1 provider. 13 support top ups. That timestamp is the exact moment of our latest price check, and the table above always shows the live order.
Which mobile networks does Guam have?
Guam is small and well served. Docomo Pacific has run LTE since 2012, and GTA's 5G build passed a third of its cell sites in 2022 before expanding island wide through 2026.
- Docomo Pacific: Docomo Pacific, wholly owned by Japan's NTT Docomo, is the largest provider of mobile, TV and internet services in Guam and launched the first commercial 5G in the Marianas in October 2019.
- GTA: GTA is the homegrown rival with prepaid plans from 2.50 dollars and a 5G network that has grown from a third of its sites in 2022 to locations across north, central and south Guam by 2026.
- IT&E: IT&E serves Guam and the Northern Marianas with cheap prepaid plans and deployed 5G fixed wireless with SK Telecom back in 2019.
The eSIM plans we compare on this page connect to:
Is 5G available in Guam?
Docomo Pacific switched on the first commercial 5G in Tamuning and Hagatna in October 2019. GTA followed from 2022 and extended 5G across north, central and south Guam by 2026.
How much data do you need in Guam?
Light use is about 500 MB a day. That covers maps, messages, and some browsing. Normal use with photos, social apps, and short videos runs 1 to 1.5 GB a day. Streaming and hotspot use can eat 2 to 3 GB a day. Here is what each size costs in Guam right now:
eSIM or a local SIM at the airport in Guam?
An eSIM is ready before you land. No queue, no shop, no handing over your passport at a counter. Data for Guam starts at $58.16 on this page, which is hard for airport kiosks to beat. A local SIM still makes sense if you need a local phone number or plan to stay for months. For a normal trip, the eSIM wins on price and effort.
Setting up your Guam eSIM
Buy your planYou get a QR code by email within minutes of paying.
Install before you flyScan the QR code on wifi at home. Airport and hotel wifi can be weak.
Turn it on when you landEnable the eSIM and turn on data roaming for it, then give it a minute to find the network.
Check the validity clockSome plans start counting at purchase, not at first use. Check before you buy.
Good to know before you land in Guam
Kiosks and duty free shops at Guam's Won Pat airport sell SIMs, but a basic card runs about 20 dollars and entry plans around 15 dollars for 7GB over 7 days, so town stores are cheaper.
Guam is a US territory but many mainland plans still treat it as roaming. T-Mobile includes Guam in many of its plans, while AT&T and Verizon customers often pay roaming rates, so check your plan before relying on it.
Guam Travel eSIM FAQ
Everything you need to know about using an eSIM in Guam
What is the cheapest eSIM for Guam?
Right now the cheapest option ranked by price per GB is MegaEsim with 20 GB for 30 Days at $58.16. That works out to $2.91 per GB. Prices change often, so the table above always shows the current order.
Which networks will my eSIM connect to in Guam?
The plans we compare connect to GTA Wireless. The exact network depends on the plan you pick. Check the plan details before you buy if one network matters to you.
Do Guam eSIMs support 5G?
The networks our plans use in Guam currently run on 4G. That is enough for maps, messaging, video calls, and streaming in most cases.
Can I top up my Guam eSIM if I run out?
Yes. 13 of the 13 plans here support top ups, so you can add data without buying a new eSIM. The rest need a fresh plan once the data ends.
Will I still receive bank SMS and OTP codes?
Yes, if you keep your home SIM active. Travel eSIMs are data only. Your phone can hold both at once, so leave your normal SIM on for SMS and use the eSIM for data. Turn off roaming data on the home SIM to avoid charges.
Do these eSIMs include a phone number or calls?
The plans we compare are data only, so there is no local number. Calls work fine over WhatsApp, FaceTime, or any app that uses data. If you need a real local number, a local SIM is the better tool.
How many GB do I need for a week in Guam?
Around 3 to 5 GB covers a week of maps, messaging, and normal browsing. Heavy video or hotspot use needs 1 to 2 GB per day. Today the cheapest plan with at least 5 GB is MegaEsim at $15.51.
How we rank
Prices last checked on 30 August 2026, 21:31 GMT across 13 plans. Every plan is ranked by the true cost per gigabyte, not marketing claims. We do not take money for rankings, and providers cannot pay for a higher position. Read the full method on our how we rank page.
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