Colombian MVNO Uff Movil went dark owing its network host US$2.8M

On Friday 27 July 2018, Colombian MVNO Uff Movil suspended operations, citing unpaid debts. Local daily El Tiempo attributed the shutdown to 8bn pesos (US$2.8M) the company owed Millicom unit Tigo-UNE for using its network; a spokesperson for regulator CRC confirmed the suspension was over unpaid debts without naming the creditor.

Uff gave users until July 31 to port their numbers elsewhere, plus two ways to use up remaining balance: calls via an app called Virfon App, or a port to rival MVNO Virgin Mobile, which would honour the outstanding balance and add a 22,000-peso welcome bonus.

The scale behind the collapse: Uff was the country's smallest operator in 1Q18 with 81,000 users and 0.13% market share, against 2.877 million users (4.58%) for rival MVNO Virgin, and market leaders Claro (29 million, 46.8%), Movistar (14.71 million, 23.4%) and Tigo-UNE (11.564 million, 18.41%). Its network host was simultaneously its competitor in the wholesale and retail market.

The company itself: 81,000 users told to port their numbers out by July 31; its 0.13% market share gone.

The debt was owed to the company whose network it rode on — the one counterparty it could not afford to alienate.

At 0.13% share and 81,000 users, Uff had no revenue cushion to service a $2.8M hole.

The endgame was orderly but fatal: port-out deadlines and balance-transfer options are wind-down mechanics, not a recovery plan.

An MVNO is only a billing relationship with someone else's network: when the host is also a direct competitor, unpaid interconnect bills are an existential risk, not a receivable dispute.

The service stayed suspended; users were directed to port out or spend balances through the Virfon app. The source reports no revival, acquisition or repayment plan.