hello everyone,
was curious as to how Verizon's data/voice network works in regard to the handset that is consuming the service. I have a phone that has a sim card for LTE, and without the SIM it cannot make voice calls, however I also have a samsung fascinate with android 4.2 that is 3g so no SIM. I was curious as to if I could activate the fascinate and use it for voice calls, but the data would still work on the other handset.
I'm sure Verizon would notice if i was consuming data on two devices, so i would disable data on the fascinate and just use wifi, however, because the voice and data are on two different bands ( from what i understand, two completely different networks), is it possible that I could separate the phone and data onto two different devices using the touch-tone activation method?
Just curious
Related
I have 4G, can send/receive texts, but I can't make calls. The circle with a line through it is next to my 4G icon in the top right.
Didn't do anything to the phone, this just happened randomly.
I've tried flashing back to stock, updating radios, etc. Nothing works. Pulled SIM card, battery, etc.
Any ideas?
It's possibly a bad SIM or a bad CDMA radio. It's far more likely the first, but I actually had the CDMA radio go bad in my first Charge. Keep in mind that the LTE network is data only, and it still needs a connection to the CDMA to have voice service. Since they're separate radios, you can have the LTE data connection without the CDMA voice connection.
Same exact thing happened to me. Seems like part of the hardware shorts out or something. Had to get a refurb.
Here's the part I don't understand.
Normal operation of phone: regardless of whether data is on or off, I can send/receive texts and calls.
Now: can't ever send or receive calls; can only send/receive texts when data is ON.
WTF?
SMS has traditionally operated by piggybacking the messages into the control information that the cell phone signals use as part of their normal background chatter that was previously wasted (using a variant of the ALOHA protocol for those interested). The European carriers devised it as a way to allow customers to utilize some unused bandwidth as a cheaper alternative to calling
My assumption, based on recent observation, is that carriers are now using ALOHA *or* data to transmit SMS, depending on what's available. This is likely due to an over-saturation of the channels used to carry SMS, or possibly a preparatory move for the transition to all IP, but that's just speculation on my part. Regardless, observations such as your would tend to support the use of two different channels.
I searched this but was unable to find any matching scenario. This is typical CDMA carrier's simultaneous voice and data issue. The phone (Galaxy Note 5) was bough from Verizon and gets 4glte fine when on Verizon SIM card... even simultaneously. I wanted to use the phone with a AT&T sim and after changing APN settings it does work fine, but NO simultaneous voice and data. When I make a call the 4glte signal on the top status bar changes to 1x and there is no data. Once the call ends it switches to 4glte. I have activated Advanced calling with Ver sim card on and when the ATT sim is in it does show HD calling enabled. So what's wrong with the device?? Did anyone face same issue ? Any suggestion will be greatly APPRECIATED. btw I am w/o any contract plan with Verizon
Hello,
Welcome to XDA.
Try posting your question in the forum linked below.
http://forum.xda-developers.com/verizon-galaxy-note5/help
The experts there may be able to help. Good luck.
Does Rooting allow phone calls and web browsing at the same time on Sprint Galaxy S8 ? Is the phone capable of this. Does it have enough/the right radios?
No, current Sprint phones do not call and data simultaneously over 3G or LTE, including the S8. Rooting has nothing to do with it.
please explain
OK, you say rooting has nothing to do with it. How does an Samsung phone on Sprint prevent concurrent data and voice on LTE when Samsung phone on Verizon allows concurrent data and voice.
It has to be hardware or software on the phone or the network that prevents this.
Is the hardware inside the phone the same which suggests to me the phone's functionality is "throttled" by the phone software or by the network itself, hence my question about whether this can be overcome via rooting the phone.
You apparently can get free hotspot through root, why not call + data?? If you can't I'll accept the reality (I am not looking for alternative facts), just that your answer was insufficient to persuade me that my logic is wrong.
Thanks,
Paul S
[=LordLugard;72722221]No, current Sprint phones do not call and data simultaneously over 3G or LTE, including the S8. Rooting has nothing to do with it.[/QUOTE]
Sprint doesn't have voice over LTE ....yet. Apparently they are working on software solutions to whatever their network issues are. Found this post from about a month ago on the sprint community site.
Sprint is excited to announce a new solution which allows customers to use voice and data simultaneously while on the Sprint LTE network or WiFi. Calling PLUS has just been enabled on the Samsung J7 Perx, with more devices to receive the update soon!
What you need to know:
Calling PLUS combines two features: one old and one brand new!
WiFi calling - our VoIP calling feature that lets you make and receive calls over WiFi
Voice and text on the Sprint LTE network, allowing simultaneous voice and data
Calling PLUS is delivered to your device by software update. Once your device has received the software, set up is easy!
On the phone, select Settings > Calling PLUS.
Slide Calling PLUS to On.
Customer can view Tutorial pages to learn more information about the service.
View pre-populated address
If the Country field says Non-USA, Select the Country and choose USA.
Enter a USA address manually.
If address is not shown or is incorrect, enter the address manually.
Address must be within the USA.
Select Save.
Your phone will validate the address required for E911 service and completes the enablement of Calling PLUS.
Select Calling PLUS options to enable each feature:
Wi-Fi Calling is On by default.
LTE Calling is optional but recommended to allow both Simultaneous Voice and Data and call handoffs between Wi-Fi Calling and LTE Calling.
Call handoffs will go from Wi-Fi to LTE even if the LTE Calling switch is Off. LTE Calls require the Wi-Fi Calling switch to be turned On for a handoff to Wi-Fi.
That's it! Your phone is now enabled for Calling PLUS. You can call anyone using Calling PLUS, the person or party that you're calling does not need to have Calling PLUS in order for it to work.
Keep in mind:
Calling PLUS is included free of charge with your Sprint plan, though data usage does count toward any metered data allotment.
Calling PLUS is a only available to select devices at this time and only in areas with LTE service. We will add more device models over time.
Calling PLUS is not a VoLTE solution and call quality can vary based on location and network conditions.
Calling PLUS is only supported on the Sprint LTE network and will not work over roaming partner networks.
Calls initiated while on LTE will not hand off to CDMA towers. When leaving an LTE area, such a call may drop.
Have questions about Calling plus? Ask us here! Have you received the update on your device? Tell us how it's working for you so far.
i have two 4G sim cards
when i make a phone call on my secondary sim (i.e. the one that is not used for data connection), i lose my data connection on the primary sim.
is this the normal behaviour?
Yes that's normal.
Unfortunately, all dual-sim phones today are dual stand-by which means that they only have one modem and only one sim can be active at a time. In dual stand-by, if one sim receives a call, the other is disabled automatically till the phone call is ended.
What you are asking about is called dual-active which means both sims can be active simultaneously and can receive calls and data on both sims at the same time, which requires the phone to have dual modems. The last phone that had dual modems was the Huawei Mate 8. Today, unfortunately, they don't make dual modems anymore. I don't know if it's due to health reasons or some regulatory restrictions.
Hi.
I have HTC U11, Dual Sim, the International version that I bought from China.
After that, I have changed the CID for it on the Taiwan version.
Currently, it is:
HTC_U-3u
Android 9
Software number 3.22.709.2
Rooted, not custom rom.
I have been used it with several MVNOs (Mint, Hello mobile) that are working on T-Mobile network for the last 1.5 years. Currently, I use Hello mobile.
All worked fine (4g, voice, text, data) until last week.
From the last week, Mobile data is not working anymore. It always shows as "Disabled" when I try to enable it, and no icon in the status bar. Meanwhile, voice and text are working fine.
I didn't do any system updates or new soft installation on my phone.
I tried to reset network data, reboot, checked with support (no issues with my number), checked APN with t-mobile recommended, changed mode on 3g, 2g, and without success, mobile data is not working.
I tried to put my sim card in another phone that I bought here in the US and the mobile data is working fine there, I see the LTE icon, and so on.
Also, I checked my phone with a sim card from ATT, and the same issue, voice, and text are ok and no mobile data.
The Signal Spy app shows me that the phone connected to Band 4 (1700). I checked T-Mobile and ATT websites and see that this Band in the list of supported 4g bands.
Also, I checked the compatibility by IMEI on websites and it showed me that only WiFI-Calling and VolTa will not work on my phone, but common 4g data is supported.
So seems all should be work fine but it is not. I found some posts on Reddit that T-Mobile wanted to change some Bands from 4g to 5g, but I don't know if it is the root of my issue.
Does anyone have this issue with this phone in the US on T-Mobile?
I don't know what it was but today Mobile Data started to work, the whole past week I had no mobile data connection.