Question If using dual sim, can you switch, or auto-switch, between the best signal? - Sony Xperia 1 IV

I've got a XQ-CT54, I guess i was wondering whether if you put two sims in (lets say one esim and one physical), would the phone switch to the other sim if it lost singal on one?
This sony help guide page; https://helpguide.sony.net/mobile/xperia-1m4/v1/en/contents/TP1000669479.html
Suggests the phone can only have one 5G sim set for data traffic, but doesnt say what happens if theres only 4G available or no signal available for that carrier/network. Would it automatically switch to the other sim, or would you have to go in to the settings and switch it over each time?
Guess i was sort of hoping/thinking how good it would be to have a main sim on one network, and then another sim on another network and it would auto switch between the two if say 5G or signal was lost on one, but im guessing it wont work like that?
Thanks!

Awesome question!
PS: Would't even mind to switch manually but the stupid icons on the top screen don't really show useful information (just those crappy 4 bars loosely related to RSSI).

i guess it should work if you disable national roaming but I have never used 2 SIMs in one phone so.....
Where I live, if you have signal than it is usually present for all 3 carriers and during field work I needed multiple devices anyway so 2 SIMs would not help at all.

Related

Never had a 3G connection...I think?

Hey all,
Currently using an unbranded HTC Hero on Orange, unsure if I am getting a 3G connection though, icon wise I constantly have a "G" but unsure if it should show "3G" instead, also seen an "E" a couple of times which I assume is Edge but didn't know Orange supported it.
Just wondering if a 3G icon as such actually exists? If so could it be a setting somewhere I haven't got configured correctly?
Thanks
Russ
Could be 2 things.
You have use only 2G networks checked in the settings
OR
You need a new sim, although the phone supports 3G your sim needs to as well. If you are still using an old sim which was from a non 3G mobile then you need a new one. Contact your provider to ask them for a new one (you will keep your number).
how to REALLY find out whether you are connected with 3G? i mean not just looking for that 3G symbol ;-)
barryallott said:
Could be 2 things.
You have use only 2G networks checked in the settings
OR
You need a new sim, although the phone supports 3G your sim needs to as well. If you are still using an old sim which was from a non 3G mobile then you need a new one. Contact your provider to ask them for a new one (you will keep your number).
Click to expand...
Click to collapse
I had to do this a while back, if you have never bought a 3G phone from Orange you probably have a 2G SIM. Call them and they will send you a new one for free.
So I'm right in thinking there should be a 3G icon? I'll get onto them thanks
Well in a very strange turn of events I may actually benefit from this. Having called Orange to ask for a 3G SIM (they confirmed I had 2G) they basically said it wasn't possible to do a straight swap, something about contracts.
After a bit of complaining they have basically come to the conclusion that the only way to help me out is to restart my contract from scratch and send me out a new 3G handset along with the SIM.
So not only will I have my beloved Hero running on 3G I will also have an as yet unspecified 3G handset for sale!
Just waiting for them to call back
And the handset I will be getting...a HTC Touch 3G!
Should fetch a pretty penny
Thats really bull**** why can't they swap your sim card. i had vodafone sim card i lost it and went to vodafone they give me a new sim card directly 5 minuts later it was active. its very weird that they have to give you new contract.
thats ****in crazy! i'd not accept that!
Replacing like for like isn't an issue, it's because I need to "upgrade" the SIM card as such that they have a problem.
Still, works out nicely for me considering I was only 4 months into my contract and have a pretty sweet deal of £15 a month for 200 mins, unlimited txts and 500mb data. So no complaints that I have to restart my contract.

??? New SIM card vs. Old SIM card ???

I noticed that the SIM cards keep changing every so often.
The new SIM cards have a smaller gold-metal surface area, whereas the older ones have a bigger gold-metal surface area.
Any ideas why?
Is there any benefit to swap out your SIM card to the newest? The SIM that comes in the box has a smaller gold-surface area.
(When was using previously using the iphone, my SIM was pretty beat up from switching phones all the time and the gold-metal part practically had indentations, which did give me reception problems. When I swapped it out with a new one at the store it did fix the problem. Obviously a surface contact problem.)
* Picture attached below *
iunlock said:
I noticed that the SIM cards keep changing every so often.
The new SIM cards have a smaller gold-metal surface area, whereas the older ones have a bigger gold-metal surface area.
Any ideas why?
Is there any benefit to swap out your SIM card to the newest? The SIM that comes in the box has a smaller gold-surface area.
(When was using previously using the iphone, my SIM was pretty beat up from switching phones all the time and the gold-metal part practically had indentations, which did give me reception problems. When I swapped it out with a new one at the store it did fix the problem. Obviously a surface contact problem.)
* Picture attached below *
Click to expand...
Click to collapse
Here's the pic.
I did have a weird situation where replacing the sim actually somehow increased my data speeds...the old sim was only a year old ...but i ain't complaining
didn't really notice any less surface area tho
newspeak said:
I did have a weird situation where replacing the sim actually somehow increased my data speeds...the old sim was only a year old ...but i ain't complaining
didn't really notice any less surface area tho
Click to expand...
Click to collapse
That's interesting....hmmm....now I'm really curious haha...
I swapped out my 1 year old SIM as well and now im getting 3G signals in my house whereas my old sim would drop 3G service more often.
Idk I change sim cards for all my phones since g1 since there's nothing on it ever since using google contacts
Sent from my SGH-T959 using XDA App
There is typically no need to replace your sim card unless you are having problems with it (ie not registering on the network.)
However older sim cards have a restriction on how many times they can register on the network, and after they hit the limit the phone will stop connecting, so if you want to prevent this issue (usually takes a couple years, and is a lot more likely in areas where your signal drops, for people who travel a lot, and in 3G coverages areas where you swap back and forth between 3G and 2G) you can use one of the newer sim cards. To Identify whether your sim is the newer variant with no registration restriction look at the back where the gold contacts are, if its a newer sim it will say in small lettering "TMXXXX" (where X is a number, ie TM4322) and it will also have an expiration date printed (it must be activated by this date or it becomes unusable.)
In terms of 2G/3G the sim card itself and its age should not make a difference as the capability to connect to those networks is dependent on the phone, not the sim. You can think of a sim card as a gateway that connects your phone to the billing system and authenticates it.
Having had said that, if you are having connection issues it could just be a defective sim card, to check, just place the sim in a phone that isn't having any connectivity problems, if it starts having problems, replace your sim.
In terms of the digit you highlighted in that picture, I believe it has to do with the manufacture year, although if I remember correctly its digits 4 and 5 that make up that information, but otherwise isn't anything important to a consumer.
well i got curious and checked ....i have the bigger sim ...i don't think the numbers matter much
Aphotix said:
There is typically no need to replace your sim card unless you are having problems with it (ie not registering on the network.)
However older sim cards have a restriction on how many times they can register on the network, and after they hit the limit the phone will stop connecting, so if you want to prevent this issue (usually takes a couple years, and is a lot more likely in areas where your signal drops, for people who travel a lot, and in 3G coverages areas where you swap back and forth between 3G and 2G) you can use one of the newer sim cards. To Identify whether your sim is the newer variant with no registration restriction look at the back where the gold contacts are, if its a newer sim it will say in small lettering "TMXXXX" (where X is a number, ie TM4322) and it will also have an expiration date printed (it must be activated by this date or it becomes unusable.)
In terms of 2G/3G the sim card itself and its age should not make a difference as the capability to connect to those networks is dependent on the phone, not the sim. You can think of a sim card as a gateway that connects your phone to the billing system and authenticates it.
Having had said that, if you are having connection issues it could just be a defective sim card, to check, just place the sim in a phone that isn't having any connectivity problems, if it starts having problems, replace your sim.
In terms of the digit you highlighted in that picture, I believe it has to do with the manufacture year, although if I remember correctly its digits 4 and 5 that make up that information, but otherwise isn't anything important to a consumer.
Click to expand...
Click to collapse
Thanks for your input.
As for the exp. date, where is that located. I don't see it.
Aphotix said:
In terms of 2G/3G the sim card itself and its age should not make a difference as the capability to connect to those networks is dependent on the phone, not the sim. You can think of a sim card as a gateway that connects your phone to the billing system and authenticates it.
Click to expand...
Click to collapse
That's what I thought...until a lot of people started noticing better 3g connection/speeds with the new sim cards. Just a placebo effect perhaps?
The size difference could also be for users who want to make it a micro sim so they can put it in their unlocked iPhones. I don't have either of these sim cards to compare, so I'm not sure.
hmm.. the sim im using is almost 8 years old. its been moved from phone to phone so many times there are wear marks on the contacts. still works fine though.
When I first got my g1 a few years ago I had issues with the market. There were apps that I knew were available (private apps) but I could not download them. I went to a T-Mobile store and looked at the display phones. One of them was able to see private apps, the other like mine, could not. I talked it over with the rep and we decided to replace the sim card. It was a random, no other ideas, decision. Started the G1 back up and Market was now working as expected. There were no other benefits noticed. Since then, I tend to replace the sim anytime a new phone is purchased.
Your milage may vary.
-Ryan
Sent from my SGH-T959 using XDA App
When I got my Vibrant, coming from the g1, tmo wanted to just pop it in the Vibrant. I made them put in the new sim card just to be safe, figured the one that came in the box brand new SHOULD be better.
iunlock said:
Thanks for your input.
As for the exp. date, where is that located. I don't see it.
Click to expand...
Click to collapse
Its only on the newer ones, the old ones don't expire, they just stop working after a set number of registrations on the network.
In regards to sim issues, they really shouldn't have any impact at all. Changing a sim card refreshes the billing information in the system (like what kind of services your phone is supposed to have and what not) customer care can do this without the need for a new sim.
Hoenstly though, sometimes a sim replacement is needed, I've seen stranger things.
s15274n said:
When I got my Vibrant, coming from the g1, tmo wanted to just pop it in the Vibrant. I made them put in the new sim card just to be safe, figured the one that came in the box brand new SHOULD be better.
Click to expand...
Click to collapse
When I bought my phone out right, the rep opened the box and took out the SIM then sold me the phone.
I guess it doesn't matter since swapping out your SIM at the T-Mobile corporate stores is free.
I just tried this since there is a tmobile store across from where I work. I used SpeedTest app and ran it 3 times before the swap. Average was about 2500 kbps download and 300 up. I swapped the sim out, went back to the spot where I originally tested and ran three more times and got about the same rate with the new sim. My old one was about 3 yo from when I had my Dash.
MonkySlap said:
I just tried this since there is a tmobile store across from where I work. I used SpeedTest app and ran it 3 times before the swap. Average was about 2500 kbps download and 300 up. I swapped the sim out, went back to the spot where I originally tested and ran three more times and got about the same rate with the new sim. My old one was about 3 yo from when I had my Dash.
Click to expand...
Click to collapse
I'm thinking the only time one would see a difference is if they are having poor contact surface from the SIM wearing out. I've seen ooolld SIM's where the metal had indentations like no other.
Just read the thread and said why not had the same sim card since I first signed up with tmobile 5 years ago.
When I talked with the rep on the phone and explained this to him and asked could this help he stated that the official tmobile policy is if the old sim card works no need to switch. However, because of the technical specs on the card could cause better reception, they just can't guarantee it, they only guarantee it will not get worse. He asked if I was having issues and I said no i'm just a nerd and wanted to know if it would help. Just swapped it out going to give it a test around the house and will report back.
Back Story:
Upgraded from G1, perfect 3G everywhere in chicago, couldn't even get it to drop from 3G no matter where I went. With the Vibrant and and old sim card, constantly dropped to 2G no big deal still was speedy
New Sim Card:
will report after testing
Old Sim Card
My connection constantly jumped from 2G to 3G all over my house constantly
New Sim Card
Solid 3G all through the house, will report back after tomorrow when I travel all over chicago

[Q] Phone/sim-card (in)compability? Is it possible to lose signal on this issue?

Okay, so - first off, let me give a quick intro: I am really sorry if I post this in the wrong forum. I AM a noob.
I've been a long time reader (and a very happy user of the great knowlegde base and ROM development here on XDA!) and this is my first post. I'm not anywhere near to be a Linux/Android wizard but on the other hand I have gotten S-off and root on my Wildfire S, have tried different ROMS, link2sd, modified GPS files with root explorer etc. That's kind of my level.
-------
So - now to my question. Please be patient with me, it's hard for me to explain in simple terms and english is not my first language. I WILL get down to facts and numbers.
I've decided to move to a more powerful device and I have just bought a Galaxy S II, bought unlocked from my provider. So basicly all I should have had to do when I got my GS2 in the mail was to pop out the SIM card from my Wildfire S and pop it in the GS2 and it *SHOULD* have been working. Problem is - it works 'kinda'. Yes - it works in the worst way - from time to time. I am puzzled!
I get very bad reception and most times NO reception - no signal.
The SIM card does not get rejected by the phone as if the phone was locked, and if I go outside I CAN get a signal, and I CAN make calls. Sometimes I have been cut off. Now I'm not talking about me not just getting data or GPS signal - I'm talking about 2G GSM signal for just making calls and texting. But outside downtown I HAVE had the H+ sign for data appear and I HAVE downloaded from market with the troubled SIM card.
So one would think that the antenna/modem(?) in the SG2 does not work properly. Well - I got me a pre-paid SIM card from the best covered provider in Denmark. I pop the SIM card in - I get a fine signal. Data and GPS works well, calling and texting - no problem!
I have tried 2 other SIM cards from my provider from friends phones - CBB using the Telenor network - and results are the same. Very poor signal, sometimes no signal.
So here's the facts from inside my appartment in a larger city well covered from several providers in Denmark:
- SIM card from my provider in Wildfire S gives me a signal between -80 and -90 dBm and 10 - 15 asu. All functions work, GPS, 3G data, calls, MMS, texting.
- The same SIM card in the GS2 give me at best around -100 dBm and 5 - 6 asu but often drops to -111 dBm and 1 asu. I have seen -113 dBm. Useless.
- SIM card from another large network provider gives me 80 - 95 dBm and 8 - 15 asu.
- I have checked if the phone is locked - it is *NOT* SIM locked.
Remember - this is all in the same place in the same chair in front of the same table. If my provider had a poor signal Wildfire S should be affected as well.
Can my SIM card from my provider somehow be incompatible with the SG2? I have of course called my provider and explained all of this. They had NO clue why it happened but would mail me a new SIM card before doing repairs.
After a factory reset Wildfire S will pop up and ask me what provider I am using after detecting SIM card (select SIM service prompt). SG2 will do the same thing on the pre-paid SIM card - not on the SIM card from my provider. Does this mean anything to any of you?
Is there a way to determine the type of the SIM card in the phone? I would like to know if the two SIM cards are of different types using different technologies - whatever - so I could determine if the SG2 was not compatible with my providers SIM card.
Model: GT-I9100
Android: 2.3.5
Baseband: I9100XXKI4
Kernel: 2.6.35.7-I9100XWKI8-CL616395 [email protected] #2
Build: GINGERBREAD.XWKI8
Country: Denmark
Provider: CBB - using the net of Telenor
If you are still with me this far - thank you very much!
I had a somewhat similar problem that I solved just this morning....
Here in Costa Rica there are now 3 carriers, ICE which is state owned and two private carriers, Movistar and Claro.
I bought my S2 unlocked from a fella that bought it from Claro. The chip I was using was an old GSM chip that I was using in my previous phone. I had data connectivity but it was slow and calls dropped constantly with my chip. I have another phone with a brand new chip and when I would use it all was good. The old chip also had an R on the signal for roaming most of the time, and it always thought it was roaming when I had market enabler programmed to fake at&t so I could get to certain apps.
But this morning I went to my carrier and got a new chip and all is good.
Bottom line, go to your carrier and ask for a new chip. There may be something in the programming not optiized for the phone you have or the current network
Actually, cdzo72 could be right.
Check how old are SIM cards you were using.
Prepaid one should be no older than 1 year, meaning new tech included.
Try to find someone who recently got new contract with same provider U are using (CBB) or at least new/replaced SIM from them.
Few years ago my provider forced me to change SIM card on renewing contract since SIM "is no more fully compatible with new technology in modern mobile phones", whatever that means.
Thank you for your time.
I have a new SIM card waiting for me in the snail mail tomorrow, and I hope that it will work.
My current SIM card is 3 years old, and when I got it, it was on the same occasion as Bodisson - I got a new Nokia, and my old SIM card was not compatible with the new phone.
If this is the case however, I cannot help to think about why my Wildfire S works without any problems at all with the current SIM card. One should think that the two phones use the same technologies.
Oh well - if it doesn't work with a new SIM card the GS2 is in for repairs on monday.
The worst thing is that I have had the phone for 10 days and I feel as I did when I was 8 years old and didn't get a Commodore 64 for christmas! I want to play with my new toy!

Question Is VoLTE Really Needed?

(US ATT and T-Mobile)
I have this phone, but only by way of ATT telling me my non-VoLTE 4G LTE phone would not work after ATT shuts down 3G.
I move over to T-mobile recently. All works ok. I then activate VoLTE on the Mi. All works ok.
But I had to call a T-mobile rep regarding my iPhone, in that conversation I asked if VoLTE was even needed, and he tells me no, that T-mobile will still do voice data w/o VoLTE enabled.
So, VoLTE is a feature of LTE and implemented on 4G/5G, and really has nothing to do with 3G being shut down.
There's so many sites stating you "need" VoLTE to keep making voice calls after 3G is gone. This is not true.
"As 3G is switched off, you need VoLTE or HD Voice support to make calls on 4G networks."
Explained: AT&T and T-Mobile VoLTE phone cutoffs
Everything you need to know about AT&T's move over to HD Voice and T-Mobile's transition to VoLTE, and what it means for smartphone calls.
www.androidauthority.com
Click to expand...
Click to collapse
As I understand it you need 3G for voice.
You may be able to use internet service but without VoLTE, no phone service.
If the device is not white listed it likely will not be able to have phone service as your link states.
I have straight talk with AT&T sim, I was using my Black Shark 3 pro which has volte and all of a sudden Friday at midnight, no data or phone service. At that time my bs3pro has been having heating issues, so i moved everything over to my redmagic 6 which has volte. I noticed my sim was locked in apn, totally different apn info than my bs3pro, so i called support, since everytime I tried to make call it blocked calls and sent me to support. The CS person did something on their end, had me restart phone, then service was back to normal and been fine since.
If your service provider only provides 4G infrastructure like mine... then you need VoLTE otherwise no phone calls. They are new and never had any 3G and below infrastructure. I tried making calls .... it doesn't.
My service provider annoyingly doesn't provision volte for my volte capable handphone (this makes my eyes swivel) but does provide an app to support phone calls without volte.. but it chews up battery
@roger_rex
But T-mobile (US) runs 4G and 5G, but # of towers with 5G not as plentiful as 4G. I connect 4G LTE most of the time, voice & data works just fine. T-mobile rep told me it will work w/ or w/o VoLTE enabled on phone. The APN used is the "fast" APN one.
A 5G connection does not negate any benefits from using VoLTE.
Was on phone again today with a T-mobile "tech team supervisor" for a service issue (they accidentally turned off one of my SIM cards). I then asked about VoLTE, he tells me it's no longer needed on T-mobile 4G or 5G LTE, but using VoLTE will still work. He seemed to suggest VoLTE not needed at all on 5G because the speed of the wireless can carry both voice and data fast enough. He also hinted their 4G can do the same.
If you have a fast pipe then you really don't need a side channel for the voice.
But duly noted, everything technical that I have read about on VoLTE, using that feature gives better voice call on any LTE that supports VoLTE. The supervisor also mentioned that "VoLTE" will basically go away at some point.
Pretty sure on 4G LTE you need either VoLTE capability or a 3G connection for voice calls.
Redirect Notice
4G VoLTE will likely be here for a long time as 5G is distance/obstacle limited, the former is very hard to overcome due to the wavelength's physical properties.
@blackhawk
I am not disputing how online info says it's required, I am just copying what T-mobile has told me.
T-mobile store rep tells me VoLTE is not really needed, then their online support supervisor tells me the same thing. So it is for sure confusing.
Call a T-mobile support # and ask.
Why would a 3G/4G-LTE phone have an option to turn off VoLTE?
https://www.republicworld.com/technology-news/mobile/what-is-volte-and-what-it-does-is-5g-volte-know-everything-here.html
ChuckStein123 said:
@blackhawk
I am not disputing how online info says it's required, I am just copying what T-mobile has told me.
T-mobile store rep tells me VoLTE is not really needed, then their online support supervisor tells me the same thing. So it is for sure confusing.
Call a T-mobile support # and ask.
Why would a 3G/4G-LTE phone have an option to turn off VoLTE?
https://www.republicworld.com/technology-news/mobile/what-is-volte-and-what-it-does-is-5g-volte-know-everything-here.html
Click to expand...
Click to collapse
I never paid much attention to this and still have questions but it's back burnered for when I run across it. From what I'm reading the T-mobile reps sound like they don't understand it either.
Even if they don't understand it... the only thing that matters immediately is if it will work. Hopefully that intel is correct!
Really until AT&T implements the change I won't be 100% sure. However pretty sure I'm ok as the devices don't use the 3G band and in hidden user settings VoLTE is toggled on. The only indication other than the 4G that VoLTE is active.
Probably HD too, but no indicator or setting other than very good call quality.
To make matters even more confusing AT&T changed the format and models listed drastically 2 weeks ago from their December whitelist. So small wonder reps might be confused too. Makes you wonder if it was deliberately self serving, an oversight or ongoing system modifications?
So, I have not been paying close enough attention to cellular these days. The cell companies have amassed large sets of licensed bands, probably near 200+ bands between 2G/3G/4G LTE and 5G NR.
Interestingly enough, 5G is not LTE at all. I suspect operators call their crud "5G LTE" to signify they support 5G-NSA or 5G-NR (or both), and, the older 4G LTE.
Some airlines are worried about two cell C bands (n77 and n79) that back up onto aircraft radio altimeter that run 4200-4400Mhz.
VoLTE has a long history, but it seems 5G-NR does not even use VoLTE (because VoLTE is a LTE feature, and 5G is not LTE). Can a 4G/5G phone still use VoLTE? Sure, if the firmware is implemented to use it. Likely will use it if the device connects 4G LTE, but perhaps will not when connected to 5G-NR. It's not clear to me if a device will use both 4G LTE and 5G-NR at the same time, but I suspect not. I mean, you could technically connect a device on 5G-NR for data, and then use VoLTE on 4G LTE for facilitating voice calls.
Some reference links for the interested reader.
5G Frequency Bands & Spectrum Allocations - CableFree
5th generation wireless systems, or 5G, may use existing 4G or newly specified 5G Frequency Bands to operate. Technologies include: Millimeter wave bands (26, 28, 38, and 60 GHz) are 5G Massive MIMO, "Low-band 5G" and "Mid-band 5G" use frequencies from 600 MHz to 6 GHz, especially 3.5-4.2 GHz.
www.cablefree.net
5G NR frequency bands - Wikipedia
en.wikipedia.org
LTE frequency bands - Wikipedia
en.wikipedia.org
List of LTE networks - Wikipedia
en.wikipedia.org
Voice over LTE - Wikipedia
en.wikipedia.org
What is 5G LTE, NR, NSA, and MIMO Technology | How Will 5G RAN be Deployed? | Corning
Learn about 5G deployment including RAN, 5G-NSA, 5G-NR, and what they mean for LTE networks.
www.corning.com
LTE vs NR: Reference signal design
NR downlink reference signals are tailored for specific roles and can be flexibly adapted for different deployment scenarios and spectrum. 5G Training
www.5gworldpro.com
ChuckStein123 said:
@roger_rex
But T-mobile (US) runs 4G and 5G, but # of towers with 5G not as plentiful as 4G. I connect 4G LTE most of the time, voice & data works just fine. T-mobile rep told me it will work w/ or w/o VoLTE enabled on phone. The APN used is the "fast" APN one.
A 5G connection does not negate any benefits from using VoLTE.
Click to expand...
Click to collapse
My understanding on this is that voice was using some 3G or below service. My provider was purely 4G and above - so unless my phone was provisioned by the cell company - no voice calls. I tried & it didn't work. I changed to an older device that they did support via VoLTE and calls worked. I can download an App from the cell company that allows my pixel 2XL to work on their system.
I can only guess T-mobile has 3G and below network infrastructure still. My provider is brand new and never built any 3G stuff and have no intention of rolling out obsolete stuff. VoLTE is annoying in that the provider gets to pick and choose which cellphones they allow (to use a standard protocol)
This may not be 100% - I've been kind of forced into a crash course on this myself over the last few days
@roger_rex - Take a read here
{Guide} QXDM Port activation on Pixel 2 XL, (VoLTE,WoWIFI,CA)
Hi all. First of all I DO NOT PROVIDE ANY KIND OF SUPPORT. YOU ALONE RESPONSIBLE FOR ANY POSSIBLE ISSUES. I wrote this post during my vacation. I know it could be quite handy, but unfortunately/thankfully my primary sources of money are...
forum.xda-developers.com
Pixel 2's all have ability for VoLTE.
A cell operator should not be blocking any phone from using VoLTE.
When you call your provider what do they tell you when you tell them your Pixel 2 has VoLTE for 4GLTE but your Pixel won't make calls on their network?
I can tell you for sure, the operators play games with their support of hardware.
My iphone XS was connecting to ATT with a "5G" icon from time to time, so why does T-mobile say 5G is a "no"? I moved the XS to T-mobile and the phone won't ever connect to 5G, and the APN settings appear to be blocked.
Tutorials | T-Mobile Support
Update: I find many sites that say the Xr and Xs do not support 5G, so now I scratch my head, my Xs would sometimes show "5G" icon for cell wireless, when it was on ATT network. Apparently AT&T supports Xs and 5G, hence the Xs does have 5G capable radio.
Apple iPhone Xs / Xs Max - Signal & Cellular Data - AT&T
Get Apple iPhone Xs / Xs Max support for the topic: Signal & Cellular Data. Find more step-by-step device tutorials on att.com.
www.att.com
ChuckStein123 said:
I can tell you for sure, the operators play games with their support of hardware.
My iphone XS was connecting to ATT with a "5G" icon from time to time, so why does T-mobile say 5G is a "no"? I moved the XS to T-mobile and the phone won't ever connect to 5G, and the APN settings appear to be blocked.
Tutorials | T-Mobile Support
Click to expand...
Click to collapse
I think they go at least partially by number of a given model in use. My guess is it's not a painless procedure for them to configure their system for a given model.
AT&T first listed their Note 10+ variant but not the unlocked variant, a month later it was added as well. It may be a work in progress... it seems sort of helter skelter, oh my gawd get it done, whatever it takes... kind of deal
You know they are catching Berlin air raid volume flack
Before buying Mi 11 Lite 5G I went into a T-mobile store (not an affiliate). I asked if the Mi 11 Lite 5G will work on T-mobile and the rep told me all phones work on T-mobile as long as they are not locked to another carrier, and, the T-mobile freq bands ("channels") are covered by the phone.
Unless LTE or 5G-NR/5G-NSA is improperly implemented on the device, then I don't see why all phones should not work. They should all work.
Think about hotspot. The carrier can control is the device can use that service, or at least can with some devices, but why bother, who cares how the data on the data plan gets chewed up. Go over the plan and get charged. Thus far I have not seen unlimited hotspot data, T-mobile only allows 40G on their Magenta Max plan.
Good thing is, Mi 11 Lite 5G phone (model M2101K9G) works a-ok on T-Mobile USA. I did have to manually set the APN to the "fast" one, and had to use dial code for VoLTE, 4GLTE and 5G works.
Straight talk now keeps shutting off my service every 3 days, last night again, so 3 times now. Call and back working. But seems like they only care about giving me some crappy free phone and seems like they outsource. The redmagic 6 is not on AT&T list, if any more issues I will switch to T Mobile, T Mobile recognized my phone by imei and said it is fully compatible. I Noticed on my Redmagic 6, sim 1 is only 14 digits but sim 2 is 15, so I moved sim card, might be issue, but doubt it.
@Rotwiler I see you posted about the IMEI digit thing in another post/forum. *#06# should reveal a 15 digit IMEI. If it shows only 14 then the phone is hiding one digit. Put sim card in sim slot that has the 15 digit IMEI.
What does *#*#4636#*#* get you? Do some gooling around for activating VoLTE on RedMagic 6
Phone lists for carriers are mostly for support reasons. If the phone has all the cell bands the operator uses, then it should be good to go. If the phone only has some of the cell bands used, then the phone may work ok in one area, but not good in another, all depends on how the operator runs the bands in different areas. The cell operator does not want the support headache for a phone that only has partial bands, "hey ATT, my phone not working in Timbuck-too", etc.
The RM6 appears to have most of the ATT 4GLTE bands (all the major ones), so it should work a-ok on ATT (US). 5G should also work. It appears the RM6 had a firmware update about 26d ago. Make sure the firmware is updated to latest.
Are your APN settings correct?
Program Data Settings for Your Device
Can’t connect to the internet on your mobile device? Here’s how to set up the access point name (APN) to get you going again.
www.att.com
I am using AT&T through Straight Talk. I did move sim card to slot 2 to see if issue was due to sim one showing only 14 digits. Phone is fully updated. Odd thing is I cannot change the APN since this new Volte, there is red check mark and everything is grayed out. I have always been able to modify APN until now. My sim card is really old, used to be full size and over the years cut it down for new phones, is probably 8+ years old, had it since Android phones came out, but has always worked great.
Rotwiler said:
I am using AT&T through Straight Talk. I did move sim card to slot 2 to see if issue was due to sim one showing only 14 digits. Phone is fully updated. Odd thing is I cannot change the APN since this new Volte, there is red check mark and everything is grayed out. I have always been able to modify APN until now. My sim card is really old, used to be full size and over the years cut it down for new phones, is probably 8+ years old, had it since Android phones came out, but has always worked great.
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Click to collapse
APN settings are grayed out when the phone is locked to carrier. Can you at least see what the APN settings are? If the phone is owned outright by you then tell the Straight Talk folks you want the phone unlocked.
As for old sim card, then just go get a new one from the store for a few $, and then move your number to the new sim card via online.
Phone is Redmagic 6 global version, never was locked.

what wireless carrier is compatible with s10 lite? which carrier do you use with it?

So far it appears that only tmobile networks allow this phone, since at&t does not support VoLTE with this phone (must set to 3g in order to receive texts/calls). I love this phone, but tmobiles cell towers don't offer a good signal in my area (using straight talk w/ tmobile card). So this got me wondering, which wireless carriers can this actually use now days? What do you personally use with this phone, and how is the service? Verizon definetly won't work either, so it looks like I am out of options... Any replies to this would be GREATLY appreciated! Thanks!
You sure? Here's the AT&T white list, more may have been added since...
I am positive. And yes, I have seen my phone on the list. no phone calls or text messaging when on LTE (and at&t). I looked into changing the IMEI so that I could use a random generated one that matches an s20 or some other phone that is more compatible, then gave up on it. At this point Im looking to sell my s10 lite so I can buy a oneplus 8T/Pro, just so I get better compatibility. Supposedly AT&T is also dropping support for international versions of cell phones, which this is. I went through 3 different at&t sim cards and all have the same result. I just wish there was a way to change my IMEI (or somehow spoof a different phone some other way)
On The Go Repairs said:
I am positive. And yes, I have seen my phone on the list. no phone calls or text messaging when on LTE (and at&t). I looked into changing the IMEI so that I could use a random generated one that matches an s20 or some other phone that is more compatible, then gave up on it. At this point Im looking to sell my s10 lite so I can buy a oneplus 8T/Pro, just so I get better compatibility. Supposedly AT&T is also dropping support for international versions of cell phones, which this is. I went through 3 different at&t sim cards and all have the same result. I just wish there was a way to change my IMEI (or somehow spoof a different phone some other way)
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Click to collapse
Is VoLTE enabled etc in hidden phone settings?
Did you have AT&T reset it on their end?
Talk to AT&T advanced tech support.
If white listed it should work!
I have straight talk which gives three options: at&t, TMobile, or Verizon (so I can't call att directly). I went into the hidden menu settings and VoLTE was turned off and greyed out. I even opened a file and added a few lines (might have been build.prop or something like that, don't remember) and all that did was switch it on in the settings (but still greyed out).
When I called straight talk tech support and asked them to provision VoLTE, all they would say is that the sim card is provisioned, and that's all they can do. Phone and text used to work if I set it on 3g (instead of lte), but this was less than optimal. I also read a reddit post today from someone four hours away that said they killed off the 3g now, so I'm not going to try using another at&t card until I get a different phone that is compatible. I know this phone is capable of VoLTE but at&t sucks, and they want to force a bunch of people to upgrade to newer phones for whatever reason.
I've even had this phone work with a Verizon sim card swapped from a different phone, but after a few days it gets shut off. So it's not a question of compatibility more than it is at&t just being jerks.
OnTheGoRepairs said:
I have straight talk which gives three options: at&t, TMobile, or Verizon (so I can't call att directly). I went into the hidden menu settings and VoLTE was turned off and greyed out. I even opened a file and added a few lines (might have been build.prop or something like that, don't remember) and all that did was switch it on in the settings (but still greyed out).
When I called straight talk tech support and asked them to provision VoLTE, all they would say is that the sim card is provisioned, and that's all they can do. Phone and text used to work if I set it on 3g (instead of lte), but this was less than optimal. I also read a reddit post today from someone four hours away that said they killed off the 3g now, so I'm not going to try using another at&t card until I get a different phone that is compatible. I know this phone is capable of VoLTE but at&t sucks, and they want to force a bunch of people to upgrade to newer phones for whatever reason.
I've even had this phone work with a Verizon sim card swapped from a different phone, but after a few days it gets shut off. So it's not a question of compatibility more than it is at&t just being jerks.
Click to expand...
Click to collapse
Straight talk maybe the issue. I don't know for sure. Maybe it's the sim card.
Both my N10+'s N975U, N975U1 made the jump seamlessly, no changes were needed on my side.
However the N975U was configured for 4G VoLTE already.
On the new N975U1 all I did was plug the N975U sim card in and it was online.
I feel you... this was an unwanted learning curve for me and had me doing a lot of Google searches.

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