Product info
Rennes 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 | $48.99 | Buy eSIM |
| 3GB prepaid eSIM · 14 days | $6.99$2.33 / GB | Buy eSIM |
| 5GB prepaid eSIM · 30 days | $9.49$1.90 / GB | Buy eSIM |
| 10GB prepaid eSIM · 30 days | $15.49$1.55 / GB | Buy eSIM |
| 15GB prepaid eSIM · 60 days | $18.99$1.27 / GB | Buy eSIM |
| 20GB prepaid eSIM · 90 days | $22.49$1.12 / GB | Buy eSIM |
| 50GB prepaid eSIM · 90 days | $48.79$0.98 / GB | Buy eSIM |
You can install your eSIM before the trip and activate it when you arrive in France. Validity starts after eSIM activation.
Plan details
How much mobile data you need
What's the best eSIM for Rennes?
A weekend – 3 GB
Maps, markets, the old town.
Brittany for a week – 10 GB
Saint-Malo, Dinan, the coast by car.
Paris and the west – 20 GB
TGV trips on one plan.
A longer stay – Unlimited
Tethering and calls.
Coverage and network
Coverage across Brittany
France mobile networks
Rennes is compact, young and very well connected - a student city of around 70,000 undergraduates with 5G across the centre. Most people arrive by TGV rather than plane, and the two-hour run from Paris is where coverage behaves least predictably.
Speedtest Global Index · Mobile · France · June 2026
Download
143.17 Mbps
Upload
10.25 Mbps
Latency
26 ms
Global rank
#31 of 98
Rennes and Brittany, specifically
- Place Sainte-Anne, the old town, Thabor: Consistent 5G. The half-timbered streets are low-rise and cause no trouble.
- The TGV from Paris: Two hours at up to 320 km/h, and handovers between masts drop calls more often than they drop data. Fine for messages, unreliable for a video call - download what you need at Montparnasse.
- Saint-Malo and the Emerald Coast: Well covered in the walled town and along the coast road. The tidal causeway to Grand Bé is short enough not to matter.
- Mont-Saint-Michel: Covered on the mount and at the shuttle car park, though it is one of the most visited sites in France and the cells feel it in August.
- Inland Brittany: The Brocéliande forest and the smaller villages between Rennes and the coast have thinner coverage than the numbers suggest. Not absent, just patchy between settlements.
France, and the EU
The plan covers all of France, Brittany included, and the same terms apply anywhere in the EU if the trip continues.
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 France. 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 Rennes
Getting online in Rennes
Rennes-Saint-Jacques is a small airport with limited free Wi-Fi, and most visitors arrive at Gare de Rennes instead, where the station network needs a browser sign-in. Neither is somewhere you want to be setting up a SIM, which is the argument for arriving ready.
Side by side
Rennes eSIM Comparison
Indicative comparison based on publicly listed France 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 Rennes?
Operator stores in the Centre Commercial Colombia and along Rue Le Bastard. As a student city the prepaid market is competitive, so deals are decent if you have time to compare.
Is ID required for a prepaid SIM in France?
It is - French lines have to be registered to an identified person, so bring your passport to the shop. Straightforward, but it means finding a store during opening hours on your first day. An Ohayu plan sidesteps it: no French number, nothing to register.
Does it work on the TGV to Paris?
Mostly. Data holds up across the two-hour run, but at 320 km/h the phone hands between masts constantly and voice or video calls drop more than they do on a stationary connection. Fine for messaging and email, worth downloading anything you actually need.
eSIM not working in Rennes?
On the TGV, brief drops between masts are normal at that speed. Elsewhere, make Ohayu the line used for mobile data, allow roaming for it, then flip Airplane mode once. Chat and support@ohayu.com are open 24/7.
