New answers tagged samsung-galaxy-nexus
NetGuard is an app that does what you're looking for. It allows you to selectively block everything/anything from data/wifi. It's also 100% free and open-source, so you don't have to worry about ads/malware. The F-Droid version has significantly more features than the less-powerful Google Play variant.
To sync frequency go to Settings - under Applications - email - manage accounts - tap on the account you want to sync - sync settings - sync schedule - set sync schedule. This works on my Galaxy S5
Microsoft's Arrow Launcher automatically arranges your apps based on your usage.
Top 50 recent answers are included