My phone serves two primary functions: searching for apps, and ordering pizza. Getting called out of bed by a friends at 4AM on a Saturday night (you know who you are!) is one function I could honestly do without.
Silence unwanted calls with Calls DND+, a useful app that automatically ignores ay selection of numbers on 'Do Not Disturb' mode. The instructions are really simple, so you'll be avoiding unwanted calls and late-night awkward conversations. Today it drops from $4.99, to $0.99!