See The Improved Pulse Weekly Data Bundle Subscription!

if a customer on another
tariff plan besides Pulse attempts to
subscribe to the plan using P500 or via
USSD, s/he will receive an error message.
Secondly, if the customer subscribes via 103
to 131, that customer will receive 750mb
and not 1 GB. It should be noted however
that all times the applicable code to dial in
order to subscribe
is *406*2*1# or *406# and to then follow
the prompt.