* Your device may need extra settings if you want to send SMS messages with your Tango SIM card.
* Click *Next* for step-by-step instructions on how to manually set up the SMS centre on your HTC One.
* Go to the Start screen.
* Choose the messaging symbol.
* Choose the options symbol.
* Choose *Text messages (SMS)*.
* Choose *Service center*.
* Enter +352091000030, and choose *OK*.
* The SMS centre has been activated.
* Return to the Start screen.
* Start screen.
* The HTC One can now be used for receiving and sending SMS messages in Luxembourg and abroad.