For the JB Hi-Fi Mobile $49 Upfront Mobile Plan, 250Mbps is the maximum potential download speeds for data included in your plan and typical speeds may often be slower.
This speed cap is great for most customers’ regular usage including streaming, browsing and social media. No matter which plan you have, speeds will vary due to factors such as location, distance from the base station, local conditions, concurrent users, hardware and software configuration and download/upload destination.