Product info
Cagliari eSIM plans
| Unlimited data · 5 days | $15.99 | Buy eSIM |
| Ohayu recommendsUnlimited data · 10 days | $27.99 | Buy eSIM |
| Unlimited data · 15 days | $37.99 | Buy eSIM |
| Unlimited data · 30 days | $54.99 | Buy eSIM |
| 3GB prepaid eSIM · 14 days | $8.49$2.83 / GB | Buy eSIM |
| 5GB prepaid eSIM · 30 days | $11.99$2.40 / GB | Buy eSIM |
| 10GB prepaid eSIM · 30 days | $18.99$1.90 / GB | Buy eSIM |
| 15GB prepaid eSIM · 60 days | $22.99$1.53 / GB | Buy eSIM |
| 20GB prepaid eSIM · 90 days | $26.99$1.35 / GB | Buy eSIM |
| 50GB prepaid eSIM · 90 days | $68.79$1.38 / GB | Buy eSIM |
You can install your eSIM before the trip and activate it when you arrive in Italy. Validity starts after eSIM activation.
Plan details
How much mobile data you need
What's the best eSIM for Cagliari?
A city and beach week – 3 GB
Maps, Poetto, restaurants.
Driving Sardinia – 10 GB
Two weeks, offline maps inland.
Sardinia and the mainland – 20 GB
Ferry north on one plan.
A longer stay – Unlimited
Tethering from the coast.
Coverage and network
Coverage coast versus Barbagia
Italy mobile networks
Cagliari sits at the southern end of Sardinia and is comfortably covered, as is the coastal ring the island's tourism runs on. Inland is a different matter: Sardinia's mountainous centre is sparsely populated and the network reflects that.
Speedtest Global Index · Mobile · Italy · June 2026
Download
93.15 Mbps
Upload
11.5 Mbps
Latency
31 ms
Global rank
#51 of 98
Cagliari and Sardinia, specifically
- Castello, Marina, Poetto: Reliable coverage. The Castello district sits on a hill above the city and gets the best of it.
- The southern beaches: Villasimius, Chia and the Costa Rei are covered at the resorts and along the roads. The dirt tracks down to the emptier coves lose it, which is the trade-off for them being empty.
- Barbagia and the Gennargentu: The mountainous interior is the real gap. Villages have service; the roads between them and the walking routes on Supramonte often have none. If you are hiking there, download everything.
- The Costa Smeralda, four hours north: Well covered - it is the most developed stretch of coast on the island and the network follows the money.
- Ferries to the mainland: The Civitavecchia and Genoa crossings are long overnight sailings with hours out of range in the middle. Onboard Wi-Fi is the fallback and it is usually poor.
Sardinia and the rest of Italy
One plan covers all of Italy, so Sardinia, Sicily and the mainland run on the same eSIM. Corsica, visible from the north coast, is French.
How to install eSIM
Connected in 3 steps
- 01
Buy before you fly
Choose your data plan before your trip.
- 02
Download & install
Log in to your account, tap your eSIM, and follow the on-screen instructions.
- 03
Land & activate
Activate when you arrive in Italy. Turn on roaming for the eSIM and it connects to a local network.
Before you buy, make sure your phone supports eSIM — see Ohayu compatible devices list or dial *#06#. It's a free request to your phone's settings. If you see the EID number — your phone is eSIM-compatible.
Arriving in Cagliari
Elmas airport and the port
Cagliari-Elmas has free terminal Wi-Fi and is unusually close to the city, seven kilometres with a train that takes minutes. Ferry arrivals from the mainland dock centrally instead, with no dependable public network.
Side by side
Cagliari eSIM Comparison
Indicative comparison based on publicly listed Italy plans as of August 2026. Competitor pricing and policies change - check their sites for current terms.
Frequently asked questions
Where to buy a SIM card in Cagliari?
Operator shops on Via Roma and in the shopping centres, plus a counter at Elmas. Passport needed. Outside Cagliari, Olbia and Alghero the options drop away quickly.
Is there coverage in the Sardinian interior?
Less than you would expect from a European island. Barbagia and the Gennargentu massif are thinly populated and the roads between villages have long unserved stretches. The Supramonte walking routes should be treated as offline - download the map and tell someone your plan.
Does the plan cover Corsica?
No. Corsica is French and 12 km away at the closest point, so it needs a France plan. Both are EU, which keeps the terms similar, but they are separate purchases.
eSIM not working in Cagliari?
Inland in Barbagia or mid-crossing on a mainland ferry, gaps are expected. On the coast, make Ohayu the line used for mobile data, allow roaming, then flip Airplane mode. Chat and support@ohayu.com are open 24/7.
