Many mobile plans advertise very large data allowances or "unlimited" service. Understanding how these plans work can help avoid confusion when comparing offers.
Most plans include a monthly data allowance. After that threshold is reached, the plan may either slow down speeds or apply additional charges depending on the plan type.
Throttling refers to reduced data speeds after a certain usage level. This allows continued internet access but at slower speeds.
Large advertised data numbers may not reflect real performance if speeds are reduced significantly after the main usage threshold.