Nigeria, March 19 -- Many 9mobile subscribers have been unable to move to other network providers in the past month, sparking concerns among industry players.

Reports say that the telecom company is preventing customers from porting their numbers, raising questions about whether this is intentional.

The issue has caught the attention of the National Association of Telecoms Subscribers, which is urging the Nigerian Communications Commission (NCC) to investigate.

This comes at a time when 9mobile's subscriber base has remained stuck at 3.2 million for three months straight.

The company once had over 23 million users in 2015 but has since lost a significant portion of its market share.

A visit to major network providers such as MTN and ...