https://community.sony.lu/t5/c-series/c5-navigation-buttons-malfunctioning-during-startups/m-p/3540242#M6072 Ram is always 1.3 to 1.5 used, leaving a hundred or so mb, when the phone is idle for ten min or so, once you open it the nav buttons dont work, home back , all the buttons down, but the apps open and i could use them. I have to click the on off button once or twice to get it working again, im referring to the nav buttons, once its operational its ok throughout yuor cellphone use, just dont leave it idle again coz its gonna hang again Thu, 16 Mar 2017 02:02:08 GMT Wetotsky 2017-03-16T02:02:08Z https://community.sony.lu/t5/c-series/c5-navigation-buttons-malfunctioning-during-startups/m-p/3540240#M6070 <P>C5 navigation buttons malfunctioning during startups</P> Wed, 15 Mar 2017 09:42:23 GMT https://community.sony.lu/t5/c-series/c5-navigation-buttons-malfunctioning-during-startups/m-p/3540240#M6070 Wetotsky 2017-03-15T09:42:23Z https://community.sony.lu/t5/c-series/c5-navigation-buttons-malfunctioning-during-startups/m-p/3540241#M6071 Can you please explain a bit better the issue? Thu, 16 Mar 2017 01:34:16 GMT https://community.sony.lu/t5/c-series/c5-navigation-buttons-malfunctioning-during-startups/m-p/3540241#M6071 YoGem 2017-03-16T01:34:16Z https://community.sony.lu/t5/c-series/c5-navigation-buttons-malfunctioning-during-startups/m-p/3540242#M6072 Ram is always 1.3 to 1.5 used, leaving a hundred or so mb, when the phone is idle for ten min or so, once you open it the nav buttons dont work, home back , all the buttons down, but the apps open and i could use them. I have to click the on off button once or twice to get it working again, im referring to the nav buttons, once its operational its ok throughout yuor cellphone use, just dont leave it idle again coz its gonna hang again Thu, 16 Mar 2017 02:02:08 GMT https://community.sony.lu/t5/c-series/c5-navigation-buttons-malfunctioning-during-startups/m-p/3540242#M6072 Wetotsky 2017-03-16T02:02:08Z