Silicon Valley has repeatedly defeated wireless carriers in the high-stakes war over making money from mobile apps. That was highlighted this week by the death of a U.S. carrier-owned smartphone payments app, Softcard, which shut down after selling its tech to Google. But the carriers aren’t giving up.

Facing slowing revenue growth, carriers from developed markets like the U.S. and Europe are continuing to fight for a piece of markets like online video and “identity management,” which will become clear next week at Mobile World Congress, the biggest annual conference for the wireless industry, in Barcelona.

Among the elements of the attempted carrier comeback: helping wireless subscribers quickly log in to banking, insurance and other sensitive apps with phone-based credentials managed by the carrier. Along those lines, Germany-based Deutsche Telekom, which owns T-Mobile in the U.S. and carriers across Europe, next week will announce a deal to use a password storage and secured log-in tool offered by Intel’s security unit, according to a person briefed on the deal.