For the consumer:
1. Removes a significant obstacle before customers to change their service provider (which improves the selection opportunities available for the customer)
2. Eliminates inconvenient consequences of changing the number
3. Improves the quality of networks

For the market:
1. Allows for entrance of new operators in countries with high penetration
2. Encourages innovation, enhances quality, cuts down prices, while meanwhile removes all administrative obstacles that result from changing the phone numbers such as updating of business cards, letterhead and company advertisements.
3. Allows customers to take advantage of better mobile phone offers without having to change their number.
4. Motivates incumbent service provider to increase the efficiency of their networks and lower their cost of service to retain their existing customers.

For the regulator:
• MNP leads to a more efficient use of numbering resources. The public benefits from a stable numbering system and an efficient use of numbering resources.
• Guarantees higher level of competition

For the operators:
• Removes a major barrier for gaining new customers