Only FX plans are subject to BMC. There are no protocol, application restrictions or speed controls for OP and Metered plans, unless you choose to activate the background data management option, which directs "bulk transfer" (e.g., software updates) and "network storage" (e.g., syncing with Apple iCloud, Google Drive, or Dropbox) applications into a 16 Kbps "trickle" channel to help minimize unintended data use.