4G LTE data only works No call or sms - General Questions and Answers

I have a HTC One (M8) i finally was able to put a rom on there that made the radio working again. (only had 3G at the time) but now i have 4G LTE up and running but now call & sms wont work. everytime i try to call someone it drops it. when i text i get a popup saying "when you enter digital service do you want to send it automatically?"
can anyone help me with this problem?

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[Q] cant call or txt in roaming

I am on the sprint network and have a samsung transform. When i go into roaming where i work, my phone shows that i have full service in roaming. I try to make a phone call it says connecting and then is followed by the screen like i hungup on the person. I try to send a txt and i get error code 97. I had a lg lotus dumb phone and it worked in the exact same area. I contact sprint and they read off the script of basic troubleshooting and then after all of that I got my intercept replaced 3x and then they gave me the transform. I called yesterday and they sent me to the exelations department and told me the phones are designed to do this and that there is nothing they can do for me. Please if anyone knows how to get my phone to work in these areas help... I thought about buying roam control to force my phone into roaming but if i cant call or txt why would i do this? Unless the app would force me on a different tower maybe. It is a very rural area lots of cows and no 3g lol but i should be able to use simple call and txt features right?

Calls go straight to voice mail

I have a HTC One S originally from Fido but unlocked and using on the Bell network in Canada. The phone will work fine for most of a day and then without warning calls go straight to voice mail, but I wont receive voice mail notificaitons. Then someone will text using whats app because text messages wont come through. If I reboot then I get the voicemails. This is geting infuriating. Any one have any ideas because otherwise I love the phone. I have switched to a 4 G sim card as I was told the older sim card may have been causing the problems. No fix.
thatsagimmee said:
I have a HTC One S originally from Fido but unlocked and using on the Bell network in Canada. The phone will work fine for most of a day and then without warning calls go straight to voice mail, but I wont receive voice mail notificaitons. Then someone will text using whats app because text messages wont come through. If I reboot then I get the voicemails. This is geting infuriating. Any one have any ideas because otherwise I love the phone. I have switched to a 4 G sim card as I was told the older sim card may have been causing the problems. No fix.
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I'd recommend a custom ROM. I had problems on stock with calls and notifications not coming through, but never once had a problem using a custom Sense based ROM. Alternately, you can do what I was doing previously, which is open up GTalk periodically, and if you're signed out due to the process being killed, sign out in the app, then sign back in and your google notifications will return.

[Q] Can get LTE but Can Not make calls and send messages

I am using at&t in the verizon htc one m8. In gsm mode I am able to get hspa and phone calls and text messages work fine. However if I switch to LTE mode, I can't make calls and send text messages, but LTE works fine.
Can anyone help me solve this? It should be able to make calls and send text messages while using LTE mode.
Thanks

Problems Handling Phone Calls (Call Waiting, 3 way, etc.) Verizon S5 on AT&T Network

Problems Handling Phone Calls (Call Waiting, 3 way, etc.) Verizon S5 on AT&T Network
recently bought a used Verizon Galaxy S5 (SM-G900V). It came with the lollipop OS. My service provider is H2O wireless (on the AT&T Network. From the outset, I had problems with phone calls, text messaging.
1. When I'm in a call, I'm not able to dial (Like to enter numbers for automated systems).
*I solved this one by going to:
settings>applications>call>
Scroll down to DTMF tones and change setting to long.
2. When I'm in a call, I'm not able to click over to calls on call waiting. When I do try to click over, I still hear the original call for a few seconds and then both calls drop and I get an error message that says "no sim or invalid sim". If I don't answer the call, both calls drop and I get the same message. The same thing happens if a try to make a 3 way call.
3. If someone calls me and I try to call them back, the call redirects to turn it into an international call and the call doesn't go through.
*I solved this using an app called prefixer
4. If I try to text message someone who called me, I get an error message back saying the phone number is invalid.
I figured I would have to root my phone to be able to make some custom changes. I first had to downgrade to kitkat (android 4.4.2) and root it and then upgrade with root using some very helpful posts and resources found on this site (thanks). When I downgraded, problems 1 and 2 went away (for number 1, I had to change my network mode, but that solution didn't work when I went back to lollipop). After upgrading beack to lollipop, all of these problems were there, though I was able to resolve 2 of them, the other 2 are problematic.
I think theres a problem with the way the phone is handling the AT&T network signal since they have a different type of network from verizon but i don't know.
I'm will in try to install a custom ROM, change settings in service mode, etc. I just haven't come accross any info to point me towards the right instructions. Alternatively, I may trade or sell this phone ant get an AT&T based phone. What do you suggest?

I can't make any normal call, but full network coverage, and internet 4G normal

Hi,
I have not been using my OP6 because of a strange issue with it since OOS 10.3.9 (maybe since May 2021)
This issue is: I can not make nor receive normal call with any provider. but my network bar is full and my 4G internet is running smoothly.
If I try to make a call, it just show the call screen, no calling tone and no waiting tone and the other phone doesn't ring.
If I try to call my OP6 from other phones, it just doesn't connect, no call tone no waiting tone... My OP6 also doesn't show any incoming call.
I'm sure my sim cards are OK, I have tried to put them in a different phone and they can make normal call.
If my sim card slots were broken, I would not have any coverage and my 4G wouldn't work...
I can receive SMS just fine.
anybody can help me?
thank you
I had the same issue, at the end oneplus said, bring it to a service center while there plenty or forum posts in their forums from technician saying it's the network chip, i got a new phone but will attempt to replace that chip once i got my replacement.
You could try other stuff, full wipe, other roms etc.

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