Network operators Verizon and Digicel both contributed to a round that almost doubled the mobile payment company's overall funding.

Verizon Ventures, the corporate venturing unit owned by mobile and broadband provider Verizon Communications, has led a $9.4m series C round for US-based mobile payment service provider Flint Mobile.

Verizon was joined in the round by another mobile network operator, Digicel, as well as Storm Ventures, True Ventures and Peninsula Ventures.

Digicel, Storm and True invested $6m in Flint last year, which was topped up by an additional $2m from Verizon in December. The company has now secured $20.4m…