Due to the latest issue with the Carrier IQ both T-mobile and Sprint has made a decision to make everything clear. If you o not recall, there was a statement that T-mobile and Sprint use Carrier IQ software to spy on its customers and use their personal information. Well, let?s hear out T-mobile?s and Sprint?s explanations: T-Mobile: T-Mobile does not use the tool to obtain the content of text, email or voice messages, or the specific destinations of customers' Internet activity. It is not used for marketing purposes. T-Mobile uses the Carrier IQ diagnostic tool to gather device data for effective troubleshooting and to increase the overall device and network performance for our customers. Sprint: Sprint uses the Carrier IQ data to only understand device performance on our network so we can identify when issues are occurring. ... Even with Carrier IQ, Sprint does not and cannot look at or record contents of messages, photos, videos, etc., nor do we sell or provide a direct feed of Carrier IQ data to anyone outside Sprint.