The iPhone assistant that was included in the update iOS6, known as Siri, is software that can be funny for testing, but if you use it or not practical for the amount of data it uses and problems recognition that can sometimes give the most common phrases, fail to disengage and stop using memory and processor resources that consume battery and hinders the use of processor cycles consumed some use.
Step 1. First you have to go to Settings -> General
Step 1D Within General Settings
Step 2. We are looking into the option of Siri General.
Step 2D seek the option of siri on the list
Step 3. We disabled Siri, give us a prompt to confirm you want to delete the data from the server and accept deactivation.