Smartphones are heavily dependent on the internet and consume much more Data than the traditional mobile phones (push e-mail option, download of the whole email with attachments, free applications etc.). Please note that the roaming charges for Data transfer can be expensive depending on the country, especially outside neighbouring countries (France, Germany, Italy, Austria). More details on tariffs are available here: Communication and Data transfer tariffs.

The best way to avoid excessive and accidental Data usage is to disable the Data Roaming AND location services and unblock it only if needed:

iPhone

Go to Settings -> General -> Cellular-> Data roaming: OFF

Then go to Settings -> Privacy -> Location Services -> OFF

You can control your Data transfer usage in the menu: Settings -> General -> Usage-> Cellular Network Data

Samsung

Galaxy : Go to Settings -> Connections -> More Networks -> Mobile Networks -> Uncheck the option ”Data Roaming”

Xcover : Go to Settings -> Wireless and networks -> More settings -> Mobile Networks -> Uncheck the option ”Data Roaming”

For any other device please refer to your phone user's guide.

In order to change your existing SIM card:

Physical SIM card: Please go directly to the Telecom Services desk (Telecom Lab, 600/R-010). The replacement will be done in a few minutes.

eSIM : please open a service-now ticket (a QR code will be sent to you electronically) or go directly to the Telecom Services desk (Telecom Lab, 600/R-010) to get a printed Activation Voucher with a QR code.

The purchase of a mobile phone and accessories by and for companies at CERN is not authorized.

A CERN mobile subscription (only SIM card) is authorized, for as long as the CERN person in charge of the contract judges it necessary. The process is controlled through EDH form which provides the following :

Request:

Allows the CERN person responsible for the contract, in collaboration with the COMPANY representative, to prepare the request.
The printed copy of this request is given for signature to the representative of the COMPANY and the EDH request is sent by the CERN person in charge for the contract.

Cancellation:

Must be made by the CERN person in charge when the contract terminates or when the subscription is no longer required.

The expenses of subscription and traffic are charged to the CERN budget code and rebilled to the company.

Faulty CERN mobile phones should be brought to the Telecom Services (bldg. 600/R-010) for checking.

If a problem is found with your phone:

Whilst the phone is still UNDER WARRANTY: The phone will be sent to be repaired. A replacement phone can be loaned to you if necessary.

Once the phone is OUT OF THE WARRANTY PERIOD: You will have to purchase a new phone. You can do this through EDH.

If no problem is found with your phone:

There may be a problem with your SIM card or even with the CERN mobile network: The Telecom Services will be pleased to investigate.

If you suspect that there is a problem with one of the mobile networks at CERN (Swisscom or Orange) please notify the Telecom Services (telecom.services@cern.ch, tel. 77777).

Please follow: Loss & Theft procedure.

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Please return the device to your secretariat or to the Telecom Services and complete a suppression request in order to cancel your subscription. The SIM card can be disposed of, it will not be reused.

It is strongly recommended that you reset your mobile phone in order to delete all your personal data (e-mail accounts, messages, photos, contacts etc.) before you give it back to your Secretariat or the Telecom Services.

Your Nokia phone has switched to a second inactive line probably because of a bad handling in your pocket or so.
Press for a few seconds on the # key and it will go back to line 1.

Go to:  Menü -> Einstellungen -> Einstellungen -> Allgemein -> Personalisieren -> Sprache and choose your preferred language.