The 10 best apps for contacts and calls

Missed Call customises your Android phone's LED light, ringtones, vibrations and alerts for missed calls, incoming calls, SMS, Blue­tooth, and calendar events. ? Free

Mycall.mobi is a neat alternative to calling up a phone directory service. Based on the postcode you type into a web browser or a supported smartphone, it can call up local results and save you time and hassle. • Free

VoIP service Vonage Mobile allows you to call Facebook friends even without knowing their numbers. Just make sure you check the time zones first; a couple of 2am calls could result in you being 'defriended'. • Free