(Over-The-Air)

Any kind of event, transfer, or transaction that takes place wirelessly using the cellular network, as opposed to using a cable or other local connection.

Usually used in reference to downloading or uploading content or software. Examples include updating phone settings or software, downloading a new ringtone, or uploading a photo.

The term OTA is sometimes used to describe the ability to update phone firmware over the network, which is technically known as FOTA: