Why can I not place calls?

I know it's a few months ago since this post, however I fixed mine pretty easy. I have a Verizon phone on a T-Mobile network. I set up the VPN how it should be etc etc.

Outgoing calls: Seldomly worked but 90% of the time it would dial out then a few seconds later hang up without ringing.

Incoming Calls: perfectly fine!

Fix: swipe down from the very top of your screen. Click on settings icon > advanced calling > advanced calling turn on/off HD voice and video call.> Turn off this setting. And Voila! Back in business.

So i was trying to figure this out for about 2 days and i think i found it basically it went like this (Home screen ->>> my dialer/contacts app ->>> three dots in the up right corner ->>> settings ->>> More settings ->>> Show my caller ID. Now the important thing about that is when you operator doesnt let you hide your number you cant use the option and it just automatically cancells your call request. Found that working for me :D

I put a new simm in my Galaxy J7 from AirvoiceWireless. I could call it, and send and receive texts. But I couldn't make outbound calls. Every once in a while, in the split second before it dialed, I saw a different number flash across the screen ( not long enough for me to write it down) and then the number I had dialed appeared. But a recorded voice always would say "call cannot be completed - please try again." I put the new AirvoiceWireless simm in my Moto G and it worked fine. I put the Moto's simm in the Samsung and I couldn't call out. So since I could see the problem stayed with the hardware, I called Samsung tech support. She was great. She walked me through clearing the system cache, then had me unhide system apps and clear the cache of 3 phone apps that appeared. No luck. Then she had me bring it up in safe mode.... voila, it worked. So she had me bring it back up in regular mode and it didn't work. She told me to uninstall whatever new third party apps had been installed but the only things installed in the last 4 months were system updates and a few little supporting things for the AirVoiceWireless simms and I didn't know how to uninstall any of those. So next she had me reset preferences on all apps. (settings -> apps -> 3 upper right dots -> Reset App Preferences) That did the trick. Whew! Now I can call out.

I was also facing the same issue in Samsung S7.

Then i changed the setting in the phone menu

phone menu -> setting -> more settings -> show my call id - > show my number in outgoing calls according to the default operator settings

Hope this helps

i had this problem got no help from anywhere so i checked all parts in my case it was the loud speaker i replaced that and working perfect :)

Hi everyone, I tried in call settings everything to sich on/off and after that was able to call again.

Maybe some kind of bugg in system.

Now everything is OK!

I had this problem on a S7 as well but none of the above fixed my issue. In my case I had zello installed and it was conflicting with the phone app and causing it to immediately hang up when I dialed. I uninstalled zello and my phone is working fine again.

Add your operator i fixed my fone in 2 min

Hi gays every communication company have a code to cancel any call conditions search on it in the internet call it and enjoy.

I had this problem. I noticed on a lot of my Wi-Fi devices, they wouldn't work with my phone sometimes, and I've noticed at least 1 reason. May not work all the time. But starts working instantly once I change it. I have 2 routers in my house, 1 for the kids, 1 for everything else, I simply changed to my Wi-Fi signal from the one the kids use to the other one, I can make calls instantly, or print instantly, chrome cast instantly, just make sure your not a blocked router, I have nothing about making calls on my router I believe, but for whatever reason, if I simply change what Wi-Fi network I'm connected to, it works. Hope this helps. Thanks

I had a similar issue with my samsung galaxy s7 verizon. The only difference between my issue and the one discussed in this thread is that when i try calling on my phone using another phone, it just says “User Busy”.

i solved it when i found out that i messed up a little bit in my mobile networks setting where i selected preferred network mode to LTE/ CDMA instead of selecting global or LTE/ GSM/ UMTS.

I fixed my issue and now my phone is running very fine.

Go in home screen>>>>settings>>>>connections>>>>mobile networks>>>>and turn off VoLTE calls

thanks to this forum…

before reading this… i tried

1 restarting my samsung

2. VOLTE on off

1. airplane mode
2. i’ve tried everything

finally, my way to solve it was… call button, key pad, top 3 dots, settings, call waiting off and wifi calling off, show caller ID -default to operator settings