# Using a Smartphone:
Uploading a flight can be done automatically when you land if, in the preferences of the app, you have checked "yes" to "Send tracks automatically", if your instrument is still connected by Bluetooth with your phone when you land (and during the upload), and if you have a decent network coverage during this time.
It is also possible to manually send / share a track of your choice from the app:
About the flight upload in Bluetooth:
\- If you have a flight log on other platforms (XContest, DHV-XC...), our servers can automatically upload a copy of your flight. Configure your profiles on this page:
\- The transfer time in Bluetooth Low Energy can be quite long. If a manual transfer takes more than 3 minutes, you will be notified with a confirmation popup to let you know about it.
\- The automatic transfer at the end of the flight will be done systematically if the transfer time is less than 10 minutes. Should the transfer duration be longer, a confirmation popup wouldl be displayed only if your application is displayed in the foreground on your phone. If it is in the background, or phone in standby, the transfer will not be executed. You will have to send your flight manually then.
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