This is a tactic we picked up from Jeff Hoffman and it works because it makes you more memorable and makes your messages seem genuine and less rehearsed. Give it a try and see if it will work for you too!
Crafting the perfect voicemail greeting is not as easy as it may seem at first glance, depending on the type of greeting: Business, funny, professional, formal, and informal, you need. Below, we’ve included some tips in creating the perfect voicemail greeting. Go over them, then when you complete your final voicemail script, revisit these tips again to make certain you’ve covered all the bases.

This is not an answering machine–this is a telepathic thought-recording device. After the tone, think about your name, your reason for calling, and a number where I can reach you, and I’ll think about returning your call.
how to change your voicemail via Iphone: From the Home screen, tap Phone. Tap the Voicemail tab then tap Greeting (located in the upper-left). Greeting is located in the top-left corner of screen. Tap Custom to record a greeting. Tap Record to begin recording the custom greeting message. Tap Stop to end recording then tap Save.