Hey Willian,
This is a common issue that I have seen many times before. What many people don’t know is that smart phones continue to work and use data while not physically being used. In other words, while your phone is in your pocket/bag or sitting on a dash mount in your car, your phone is constantly sending and receiving information in the background. There are ways of reducing the amount of usage by not allowing apps to use data or track information while not in use. Or in settings, you can turn off “Background App Refresh” to stop apps from runnning in the background while not in use.
If you are using an iPhone here is a little trick. Open your Maps and search for a destination that you are going. Your phone will load all the directions and route that you will take. Once you do that you can put your phone in Airplane Mode and your phone will continue to provide you with directions without using any further data.
That being said, there are some cons to this. First, you will not be able to make or receive phone calls/texts. Second, if you go off course from the prescribed route your phone will not make the adjustments until you turn airplane mode back off so it can load the new route based on your new location (at which point you can turn your phone back to airplane mode). Of course you would have to stop and do these adjustments since it is dangerous to do while driving. If you have a co-pilot then they can do this for you.
This is a good trick to help you save data especially since you only have 1GB. Hope this helps, good luck!
