https://www.reuters.com/article/us-sprint-corp-m-a-t-mobile-us/sprint-t-mobile-plan-to-file-deal-application-to-fcc-on-monday-idUSKBN1JB2FZ

Wireless companies Sprint Corp and T-Mobile US Inc have informed the Federal Communications Commission that they will formally file an application asking for approval to merge on Monday, according to a document seen by Reuters.