Why does my I 4 calls go to voice mail without indicating a missed call?

howdy cowboy... a few thoughts

Is this NEW or always? Is this all calls missed or just some? Is your iPhone ON when these calls were missed(I know, stupid question)? If on, how do you know that these calls actually got to the iPhone and is not a service provider issue? <-likely

EDITadded - I have asked the hosts to move this question to the iPhone 4 forum. endEDIT

buenos dias

CCC

Is Do Not Disturb turned on? Look for a quarter moon icon in the status bar up top.

Also check to see if any Contacts are 'Blocked'.

What about your mute switch on the side of the phone, is the red line showing?

cowboy

Clarifications... when you say "... only some calls..." and "... someone says they called..." - are these all from from one caller?

After following all these fine suggestions and eliminating them systematically, consider that this kind of stuff is as old as the cellphone system. A few possibilities that occur to me just regarding the network system:

1. you are in a habitually dead spot area. I have one in my own house!
2. you travel through many of these dead zones (traditionally called 'low-coverage' areas) - remember how big a deal the coverage maps were to us?
3. there is an issue with your network service provider's back-end system (my first thought - above)

keep plugging away amigo! I'll bet you get this solved.

CCC

check w/your wireless provider. Had this problem once and it was a problem on their end.

good hunting

be sure and come back and tell how you fared.

CCC