Guys. I think I may have solved the problem without going back for another SIM card. And I may have found a solution: This a long post But worth It.

In the interest of being fair, I will tell you everything I did until my HOX+ stated receiving calls again. I say this because I am not sure what exactly fixed It if indeed is fixed.

My wife called my Work phone to ask me a question and I new my HOX+ went back into the negative zone. (I had been working fine since 12/10 after receiving my first replacement SIM card)

I kept trying to call the HOX+ to no avail. I noticed like someone else said that if I hang up and try to call again while the status bar still said 4G, It would receive the call. Hung up tried to call right back, noticed the status bar jumps from 4G to 4GLTE then back while the Work phone kept ringing out till busy tone. I tried a reboot By holding the power button until the phone reboots on its own. Was able to call It once the signal bars came in But It did not switch to LTE yet. Hung up and tried to call again. By this time the HOX+ switched to 4GLTE. Work phone starts ringing out, on first ring out, HOX+ switches to 4G, does not ring.

Tried removing the SIM after shutdown. Reinserted SIM and powered up. One call makes It thru before HOX+ switches to 4GLTE. All subsequent calls either start ringing no answer till busy (15-20 rings out from Work phone) or rings 2x then busy tone. Waited a couple hours. Tried to call again But this time I either get ring 2x then busy or ring 2x then voicemail which never happened before. Then I only got ring once then voicemail. I'm thinking "weird".

I didn't wait till voice message finish or leave a message even though I intended to do It once to see if It would alert me that I have a message. I never get to It. I started searching around for voicemail options. I read on an ATT help site about some SIMs have the ability to store 2 numbers and you should make sure that your number you are calling is the "home" or "main" number. The info Was on an HTC Inspire help site. I couldn't find any option like this on my HOX+ so I start looking into all the settings, I see a call blocking setting. I thought maybe It is stuck on blocking even though the phone sys It isn't so I try to set to block all incoming then set It to off, But as I sent the command to block all It says "Network or SIM error" the status bar says 4G so I try calling It. It receives the call and rings! I think "cool I fixed It" So I try again, nothing But the same (switches from 4GLTE to 4G, no ring in no receiving any incoming)

So next, I tried the *#*#4636#*#*

I tried to select WCDMA only. It didn't stick. I tried turning the radio off and then back on, then selecting WCDMA only, did't stick. I tried pinging the device, then selecting WCDMA only, didn't stick. I found that if I turn the radio off in that section, I Was able to select WCDMA only and the selection kept. But then, I would turn the radio back on and It would immediately revert back to GSM/WCDMA/LTE preferred. I tried turning the radio off, selecting WCDMA only then rebooting. When the phone finished booting I went back into the *#*#4636#*#* menu, and It Was back on GSM/WCDMA/LTE preferred. Keep in mind that I did not try calling the phone at all during this. At this point I Was only trying to find a way to make my selection of WCDMA only stick But to no avail. Then I did tried to call a couple of times while still in the phone info menu. Just rings no answer or rings 2x then busy.

The next thing I did Was hit the menu icon in the top right of the screen and selected fixed dialing numbers. It came back with no contacts on the sim card. Then I selected Disable Data Connection in the Menu dropdown. Then I selected Enable Data Connection.

Here's what I think fixed It: I next selected Select Radio Band in the Menu dropdown. It comes up with 2 options: Automatic, and USA Band. I selected USA band and got a confirmation message stating that I indeed selected USA Band. Then I called the phone and It immediately started to ring! I paid attention and noticed the 4GLTE icon Was there. Then It switched to 4G on first ring of my calling phone and my HOX+ rang!

I got excited But then thought It might be a fluke and tried calling It again and It immediately rang again!. Just tried again after typing all of this and It still rings on first try! I think this solved It.

PASS IT ON!!!