An Atlantis Telecom travel eSIM for the Cayman Islands starts at $9.50 for 1 GB over 7 days. The product page lists the speed as 4G. Plans run from 7 to 30 days. There is no unlimited SKU on this product. Coverage is the Cayman Islands.
Key facts
| Country | Cayman Islands |
| Network | Atlantis Telecom |
| Speed | 4G (published on the product page; subject to carrier Fair Usage Policy) |
| From | $9.50 for 1 GB / 7 days |
| Validity | 7, 15, or 30 days |
| Install | QR code, before you fly |
What an Atlantis Telecom eSIM costs
The cheapest published plan on the Cayman Islands travel eSIM is $9.50 for 1 GB valid 7 days. A 2 GB / 15 day plan is $15.00, a 3 GB / 30 day plan is $30.00, and a 5 GB / 30 day plan is $40.00. Larger buckets go up to 20 GB for 30 days at $60.00. There is no unlimited plan on this product. Buy the size that matches the trip, not a larger plan “just in case”.
Network
The plan is sold under the operator name Atlantis Telecom and the supported country is the Cayman Islands. The product page publishes the speed as 4G. That is the figure to plan around. It is not a 5G product, and speed on the ground still depends on the mast, the handset, and the carrier Fair Usage Policy. The Cayman Islands are covered as one country on this plan, including Grand Cayman, Cayman Brac, and Little Cayman. It does not cover Jamaica, Cuba, or any other Caribbean island, so a hop to Montego Bay needs its own plan.
How much data you actually need
Maps, chat, and boarding passes sit inside 1 GB for a short stay. Photos and short video push a dive week toward 3 GB, and uploaded dive footage is heavier than anything else on the trip. A longer stay with hotel Wi-Fi plus mobile backup is the 3 GB or 5 GB / 30 day plan. Hotspot use burns the allowance faster than the phone alone.
Unlimited data
This product does not list an unlimited plan. The largest published SKU is 20 GB for 30 days at $60.00. If you need a daily cap removed, that is a different product, not this one.
Dual SIM
Keep your home SIM for calls and bank texts. Turn on data roaming only for the Atlantis Telecom line. iPhone: Settings, Mobile Data, pick the travel line. Android: Settings, Network, SIMs, set mobile data to the travel eSIM. Do this before you leave the airport Wi-Fi.
Arrival and transit
Most visitors land at Owen Roberts International Airport (GCM) on Grand Cayman, with a smaller strip at Cayman Brac (CYB). Install the eSIM on hotel or home Wi-Fi before the flight, then switch the data line on after you clear arrivals. You do not need a local shop or a passport photo for this plan.
Install
- Buy the plan and open the QR code in the order email while you still have Wi-Fi.
- On the phone, add an eSIM and scan that code. Label the line “Cayman”.
- After landing, set mobile data to that line and leave your home number on for texts.
Phone compatibility
The phone must be carrier-unlocked and eSIM-capable. iPhone XS and later, and recent Samsung Galaxy and Google Pixel models, qualify. A locked handset will not take the QR code. Check the lock status with your home carrier before you pay.
FAQ
Q1: How much is the cheapest Cayman Islands eSIM?
$9.50 for 1 GB, valid 7 days, on the Atlantis Telecom plan.
Q2: Which operator is on the plan?
Atlantis Telecom. The supported country is the Cayman Islands.
Q3: Does it include calls and SMS?
No. It is a data plan. Keep your home SIM for calls and one-time passwords.
Q4: Is it 5G?
No. The product page lists the speed as 4G, not 5G. Real speed still depends on coverage and the Fair Usage Policy.
Q5: Can I install it after I land?
Yes, if you can reach Wi-Fi. Installing before the flight is simpler, because the QR download needs a connection.
Q6: Will it work outside the Cayman Islands?
No. This plan is for the Cayman Islands. Buy a separate plan if the trip continues into Jamaica, Cuba, or another island.
Q7: Is there an unlimited option?
No. This product has no unlimited SKU. The largest plan is 20 GB for 30 days.
Q8: Can I share it as a hotspot?
Yes, within the data allowance. Hotspot traffic counts against the same gigabytes, and heavy sharing can hit the Fair Usage Policy.
Q9: What if the QR code fails?
Use the manual activation code in the same email. The phone still has to be unlocked.
Q10: When were these prices checked?
October 2026, against the published variation prices on travelydata.com.
Bottom line
For a week on Grand Cayman, the $9.50 / 1 GB Atlantis Telecom plan is the one to start with. Step up to 3 GB or 5 GB if you will be off hotel Wi-Fi most of the day. The published speed is 4G. There is no unlimited plan on this product.
Prices and coverage verified on travelydata.com, October 2026.
