The salient feature which differentiates this service from the others is, service available for both Jazz and Indigo customers gives two options, to add numbers to the list. Black List as well as White List. With this service, you can not only block the numbers but also use it the other way. Allow specific numbers to call while the remaining ones will remain as blocked. For this, all numbers added to White List will be able to call or send SMS to the subscribers while the others won’t, Mobilink currently allows to add upto 20 numbers in the list.