Audio and Connectivity
The Celkon C11 included a loudspeaker for hands-free conversations and radio listening. However, it lacked a 3.5mm headphone jack, suggesting a prioritization of its moniker functionalities over audio diversity. Without WLAN support, users relied on Bluetooth for short-range wireless connectivity and data transfer, but its exclusion of EDGE or higher forms of internet connectivity underlined its simplicity and low data usage expectations.