I want to ensure those important calls get through Huxable! I understand why you are concerned!
My first recommendation would be to make sure you are power cycling the device(turning off and on) at least once a day. This allows the device to refresh with the network and update the tower information on 4G handsets.
Second, it will definitely be valuable to test the device in different locations to determine whether it is a location issue versus an equipment issue. If this happens in multiple locations for example, it is likely device related.
If you find the issues occur mainly inside your home, the network extender accessory is an excellent option to boost indoor signal strength.
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Just throwing my hat into the ring - I'm having exactly the same problem. My mother alerted me to it when she kept calling and it wasn't ringing, but I would get notifications of voicemail. It happens all around Atlanta and in my home (where I consistently have 3 bars). My husband (who is on Verizon) stood next to my phone and called it - his phone rang, but mine didn't. After 4 rings on his phone he got my voicemail. Please let me know if you figure out the problem.
I have the same problem. I've been working withVZW tech support for 6 weeks and no solution. I've replaced SIM cards and phones. Problem happens randomly in all locations and signal strengths. I've tried all different settings (LTE on/off, wifi on/off, different ring tones, everything.). My last iPhone switch I set up as new phone and didn't use my back-up. I still have the problem. Happens intermittently and when it does phone goes directly to voicemail after one ring. HELP. VERY FRUSTRATING!!!!
I should also add, that my wife got an iphone 5 at exactly the same time as i did and she has never had the problem. Someone will call me and not get through (call goes to voicemail) and they will immediately call her phone and it will ring and she is standing right next to me.
I've also tried with cover off, cover on no difference. I originally thought it was the iPhone 5, but after reading through the on-line community this problem seems to be happening with a number of phones (e.g., Samsung Galaxy III). So now i think it must be something in the VZW network. When i've talked to VZW tech support, they have called me and actually experienced the problem first hand when their calls back went to voice mail. They indicated everything appears normal on their view of my phone on the network, but something must be amiss somewhere.
Huxable, after all the trouble-shooting your new phone should not be having issues. Let's also try resetting the network settings. Here are the steps http://tiny.cc/myubpw .The phone may be defective and we may need to replace it. If the phone has no damage, we can replace it with the same model as long as its under the one year manufactures warranty. This can be discussed at a corporate store or by phone with customer service.
My Iphone 5 is having the same problem:
I can use every function of the phone (including calling other phones) however I am unable to receive calls because the call goes straight to voicemail for the various people who call me.
I am wondering if this problem may have to do with the fact that I switched from AT&T to Verizon once I purchased this Iphone 5.
Ok I went through the process and it turns out that this can occur when one switches from AT&T to Verizon and vice versa. They (being Verizon) simply had to confirm the switch (or something like that) and then voila, I received a text "welcome to Verizon you can now make calls on America's...etc"
I can now receive calls.
In case any of you have switched recently this maybe be your problem. Hope this helps.