check with settings for the phone device, usually it should be under the settings, or under the tools setting. Some phone allows you set 24 hour or 12 hour time display. For my phone, i remember being able to set time zone as well so it would auto update the time if it was connected to the network. Of course the basic types of phone were not as fancy as the smart phone but at the very least, you're still able to keep a good time for the location where you are and possibly several others around the world. 
