Swisscom e-SIMs
For clients who are concerned about racking up mobile phone bills while they are away, recommend checking out telecommunications provider Swisscom. Its prepaid flat 7 e-SIM can be purchased by travellers in advance online, costing 20 CHF for seven days (approximately £18). For longer stays, 30- and 90-day packages are also available.
The e-SIM includes unlimited calls and SMS, and mobile data usage within Switzerland (speed 50mbit/s) and there are no roaming charges. It doesn’t require a contract, and ensures travellers don’t have an unexpected bill when they return home, as all costs are paid in advance.