Keeping Dallas clean just got a lot easier. All you have to do is see a code violation, snap a picture and send it to City Hall via your smartphone – it’s that easy. But first you need to download our NEW Dallas 311 mobile app from the Google Play store or the iTunes store. It’s going to allow you to report service requests on the go. The new app is free and easy to use. It literally takes no more than one minute to submit a service request via your smartphone or tablet.