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Mobile guides

    Troubleshooting

    If your device isn't working properly, you can try several solutions to solve the problem.
    In most cases you can solve the problem by following these guidelines:

    The PIN is used to protect your SIM card from unauthorised use. If an incorrect PIN is entered, you can't turn on your mobile phone.

    Solution: Key in the correct PIN.
    If an incorrect PIN is entered three times in a row, your SIM card will be blocked and you need to key in your PUK. The PUK can be obtained by logging on to Swisscom Customer Centre.