might be an obvious tip, but i didnt know about it until recently. been keeping a close eye on my data usage lately and finally noticed how much background data lots of apps use.
go into your settings menu and click on Mobile Data. it will list data usage by amount used per app. click on the app in the list and it will show you a breakdown of how much data was used by the app while in use and in the background. here you can disable background data usage for each app individually.
be smart about what apps you choose to do this with. there may be some apps that you want to have access to background data, but i disabled a lot of them and it's saved me a fair bit of date over the last week or so.
i personally didn't disable apps that tend to send alerts and messages since i wasn't sure if this would stop them from working properly. maybe someone with more knowledge can clarify.
go into your settings menu and click on Mobile Data. it will list data usage by amount used per app. click on the app in the list and it will show you a breakdown of how much data was used by the app while in use and in the background. here you can disable background data usage for each app individually.
be smart about what apps you choose to do this with. there may be some apps that you want to have access to background data, but i disabled a lot of them and it's saved me a fair bit of date over the last week or so.
i personally didn't disable apps that tend to send alerts and messages since i wasn't sure if this would stop them from working properly. maybe someone with more knowledge can clarify.