Sprint on Friday said it has "disabled use" of Carrier IQ on its handsets.
The news was first reported by PCMag's sister site, Geek.com.
"We have weighed customer concerns and we have disabled use of the tool so that diagnostic information and data is no longer being collected," Sprint said in a statement. "We are further evaluating options regarding this diagnostic software as well as Sprint's diagnostic needs. At Sprint, we work hard to earn the trust of our customers and believe this course of action is in the best interest of our business and customers."
In a statement, Carrier IQ said "Sprint has been a longstanding customer of Carrier IQ. We are actively engaged in discussions with Sprint to address their diagnostic needs in light of recent events."
The announcement comes one day after Sen. Al Franken released statements from Sprint, AT&T, Samsung, and HTC about their use of Carrier IQ technology.
In its letter to Sen. Franken, Sprint said Carrier IQ is on 26 million of its devices, but data is only collected from about 1.3 million devices.
Sprint did not specify exactly which of its phones have Carrier IQ except to say that they include devices from Audiovox, Franklin, HTC, Huawei, Kyocera, LG, Motorola, Novatel, Palmone, Samsung, Sanyo, and Sierra Wireless.
Samsung's response indicated that Sprint devices with Carrier IQ included the Galaxy S II Epic 4G Touch, the Replenish, Galaxy Prevail, the Transform, the Intercept, the Epic 4G, Galaxy Tab tablet, and more.
Sprint started working with Carrier IQ in 2006. The company stores Carrier IQ data on its servers for 30 to 45 days, keeps the raw data for six months, and saves reports from Carrier IQ for one year.