For a long stay in the Canary Islands, the best value is usually a Spanish prepaid SIM or eSIM with a large monthly data allowance. UK networks may include EU roaming, but many limit roaming on long stays or charge daily fees, so check your plan’s fair-use policy.
Your options
| Option | Pros | Cons |
|---|---|---|
| UK plan with EU roaming | No setup, keep your number | Daily fees or limits on long stays |
| Spanish prepaid SIM | Cheap, large data allowances | Needs ID to register |
| Travel eSIM | Instant, no shop visit | Usually dearer per GB |
| Spanish eSIM from a local network | Good value | Registration needed |
Buying a Spanish SIM
- Visit a network shop or authorised dealer with your passport.
- Choose a monthly prepaid plan with enough data.
- Keep your UK SIM for banking codes, using a dual-SIM phone or eSIM.
Coverage
The main Spanish networks cover the coasts and towns well. Mountain and rural areas can be patchier.
Our verdict
Keep your UK number for banking, add a Spanish prepaid line or eSIM for data. More in Internet Speeds in the Canary Islands.