Kalam tariff promotes you a special discount in calls and messages as below:
Calls within the network
One Yemeni riyal after the third minute and 17 riyals for the first three minutes.
To other local GSM network for 22 riyals/minute.
Fixed phone costs 22 riyals/minute.
5 riyals per message.
No subscription fees.
To switch to a “Kalam” tariff
call 555, then press Number 3 and follow the instructions,
only 50 riyals will be charged when converting.