Morocco eSIM: data from the moment you're off the ferry or the plane

Because your phone picks its network by itself, and near the Strait the Moroccan signal is sometimes the strongest. If data roaming is on, it connects without asking. To avoid it in the area, turn data roaming off and choose your Spanish operator manually: on iPhone it's in the mobile data settings, under Network Selection; on Android in the mobile network settings, under Network operators. Switch back to automatic when you leave the area, or you can end up with no coverage. If a charge still arrives, complain to your operator and keep the complaint reference.

Don't count on it on board. In the middle of the Strait the ship may run its own maritime network, which is neither Spanish nor Moroccan and isn't covered by normal roaming. The safe move is to keep mobile data off during the crossing and switch the eSIM's data on once you're in port in Tangier. In summer, with Operación Paso del Estrecho and the boarding queues, have the eSIM installed from home.

Mostly it depends on video calls. Maps and messages use little; a daily video call home uses a lot more. If there's Wi-Fi at the family home, a mid-size plan usually covers you out and about and on the road. If there isn't and you'll be on video often, take a one-month plan with more GB: it works out better than running out halfway through the trip.

Your Spanish line stays active and can receive calls and texts, but outside the EU answering a call usually costs money too. The Morocco eSIM is data only, so the practical move is to ask family and friends to call you on WhatsApp: that runs over the eSIM's data, not roaming. Texts from your bank still reach your Spanish number.

To buy a local SIM in Morocco you'll be asked for your passport, in the shop or at the airport. The eSIM you buy online from Spain, and the QR code arrives by email straight away. Install it calmly at home; the plan's days start counting when your phone connects to the network in Morocco.