Hey guys,
So I have the Z3 Dual, but where I live, we only get 3G network and no GSM, which brings me to my question:
Is anyone working towards a hack to allow my device to run BOTH my Telstra SIM cards in LTE mode without one reverting to GSM?
Thanks in advance,
Phil
Really? No gsm signal or 2g. I think 2g structures are the most basic one that every carrier Has. BecAuse if 3g becomes congested, the subscriber can fall back to 2g. Anyway i guess no hack is on going because of the rooting issues with this plus i think it's a hardware limitation. 2 simcards cannot use 1 modem (the 3g/4g) because that would tax a lot of battery power
Sent from my D6633 using XDA Free mobile app
There are 2 radios in the phone I'm suspecting, since both SIM's run different IMEI numbers (1 per radio) if you check in About Phone/Status and check the 2 SIMs.
So I can't see why this is a limitation.... renders the phone worthless for what I wanted it for (Work sim and Personal sim),
And yes, where I live, there has never been GSM, it was CDMA before the towers were upgraded to 3G (Central Wheatbelt is Western Australia).
Dysstatic said:
There are 2 radios in the phone I'm suspecting, since both SIM's run different IMEI numbers (1 per radio) if you check in About Phone/Status and check the 2 SIMs.
So I can't see why this is a limitation.... renders the phone worthless for what I wanted it for (Work sim and Personal sim),
And yes, where I live, there has never been GSM, it was CDMA before the towers were upgraded to 3G (Central Wheatbelt is Western Australia).
Click to expand...
Click to collapse
When you use the first SIM with LTE the second has no signal?
I can't understand if the second sim limit is only for connection or also for 3G bands.
I mean: you can still use the second line on a 3G network only for calls and SMS without using data connection or not? The second line is limited on 2G bands?
thanks for answers I ordered a Z3 Dual 2 days ago
theskig said:
When you use the first SIM with LTE the second has no signal?
Click to expand...
Click to collapse
Correct, because the second sim drops down to GSM, which we don't have in rural Western Australia. And vice versa, set the second SIM to LTE/WCDMA and the first SIM drops down to GSM. Meaning, you cannot run 2 SIM's side-by-side unless you live in an area that has GSM/2G still.
theskig said:
I can't understand if the second sim limit is only for connection or also for 3G bands.
I mean: you can still use the second line on a 3G network only for calls and SMS without using data connection or not? The second line is limited on 2G bands?
thanks for answers I ordered a Z3 Dual 2 days ago
Click to expand...
Click to collapse
So, you choose either SIM as your data sim. Whichever you choose, that sim runs in LTE mode and the other SIM is used for calls/sms only.
SMS and phone apps both have 2 send buttons labelled 1 and 2, so you can send messages or make calls from either SIM at the press of a button. But only 1 SIM has data active, that is the SIM running in LTE mode.
I have messaged Sony Mobile Developers regarding this, the reply was:
From: [email protected]
Hi Phil,
Thanks so much for your email. We will forward the dual SIM issue you have identified to our internal teams for further investigation.
Best regards,
Developer World
Hope this helps
Regards,
Phil
Dysstatic said:
Correct, because the second sim drops down to GSM, which we don't have in rural Western Australia. And vice versa, set the second SIM to LTE/WCDMA and the first SIM drops down to GSM. Meaning, you cannot run 2 SIM's side-by-side unless you live in an area that has GSM/2G still.
So, you choose either SIM as your data sim. Whichever you choose, that sim runs in LTE mode and the other SIM is used for calls/sms only.
SMS and phone apps both have 2 send buttons labelled 1 and 2, so you can send messages or make calls from either SIM at the press of a button. But only 1 SIM has data active, that is the SIM running in LTE mode.
I have messaged Sony Mobile Developers regarding this, the reply was:
From: [email protected]
Hi Phil,
Thanks so much for your email. We will forward the dual SIM issue you have identified to our internal teams for further investigation.
Best regards,
Developer World
Hope this helps
Regards,
Phil
Click to expand...
Click to collapse
Thanks for infos!
That's weird! If I live in a place with only 2G or only 3G network I cannot use 2 sim cards!
But I remember reading on online user manual that the 2 sims network settings are separated, right? If you force both on the right frequency?
In a few days I'll receive the phone and I'll help you with some tests
theskig said:
Thanks for infos!
That's weird! If I live in a place with only 2G or only 3G network I cannot use 2 sim cards!
But I remember reading on online user manual that the 2 sims network settings are separated, right? If you force both on the right frequency?
In a few days I'll receive the phone and I'll help you with some tests
Click to expand...
Click to collapse
Correct, both sims wont run on 3G at the same time..
Both sims WILL run on 2G at the same time though (GSM).
Hi all,
There does not seem to be any resource that clearly shows the variations of the U Ultra at present.
I personally have a TW market model, with dual SIM. It appears that the bands on this model are not right for North America (and perhaps also South America) but are fine for my uses in APAC.
Given that there is limited info, perhaps we should gather some information.
Mine: 1.09.709.7 Taiwan model, Dual SIM
I am located in Australia, and Australia launches on March 8. It is unclear to me which model, though the product page on HTC's AU site suggest it would be single sim.
Can others who have gotten an U Ultra in other markets comment on their version? UK / India / NA?
Reason why I've put this in this subforum is so that we can explore the possibilities of opening up hidden bands with different radios (I believe my Taiwan Model supports: FDD: B1/B3/B5/B7/B8/B20/B28 TDD: B38/B39/B40/B41) and the AU model lists FDD: Bands B1/B2/B3/B4/B5/B7/B8/B12/B17/B20/B28TDD: Bands B38/B39/B40/B41 - which is in line with US?
Also, it may allow single sim to potentially support dual sim? as the dual sim has a combo slot with microsd, perhaps the hardware is there for single sim to support a second sim.
Lets explore what we can do with this phone!
Hi, seems like you posted on the wrong section. Maybe a moderator could move it to "HTC U ULTRA GUIDES, NEWS, & DISCUSSION" ?
Howling Wolf said:
Hi, seems like you posted on the wrong section. Maybe a moderator could move it to "HTC U ULTRA GUIDES, NEWS, & DISCUSSION" ?
Click to expand...
Click to collapse
Hey Wolf, you're probably right, a mod prob should move this. I originally intended this to form a basis where we can collect all the different firmware / radios etc, as I was under the impression that there were multiple hardware variations worldwide....
In one of the threads here on XDA, another member suggested he ordered the intl. model and it didnt support the right bands for the USA. Leading me to think there were multiple models.
I'm starting to think there isn't, here is why.
1. Michael Fisher (I think he's in Canada) imported a TW market phone for his early review. It appears to have LTE in the film, and he doesnt mention anything about incompatibilities.
https://www.youtube.com/watch?v=WIWbn8ecKwA
2. Jeff Springer (I think he's in the USA) imported a HK market phone, it also appears to have LTE - https://www.youtube.com/watch?v=fclOYUyfxnE&t=522s
I believe the belief that the intl. model doesnt support USA bands (2/4, etc) comes from the practice (poor practice, admittedly) for HTC's Taiwanese website to only declare the bands that it perceives are relevant to Taiwanese users. The HK website suggests the same as taiwan = FDD: B1/B3/B5/B7/B8/B20/B28 TDD: B38/B39/B40/B41
The UK / India / USA / AU sites all state - FDD: Bands B1/B2/B3/B4/B5/B7/B8/B12/B17/B20/B28TDD: Bands B38/B39/B40/B41
With USA & AU not stating support for dual sim, but HK, TW, India, UK do.
I believe there is only one model (with multiple software variations), and the information published being variable.
@sephstyler. I was thinking the same. ?
profixit said:
@sephstyler. I was thinking the same.
Click to expand...
Click to collapse
HTC U Ultra through Vodafone Australia does not support dual sim out of the box. The example I saw today was running 1.09.710.12
I purchased one off of an eBay from a Chinese vendor; I'm pretty sure it's the international version since it has the dual sim and int'l charger. I can confirm no problems here in NY and I'm on T-Mobile.
akhobbes said:
I purchased one off of an eBay from a Chinese vendor; I'm pretty sure it's the international version since it has the dual sim and int'l charger. I can confirm no problems here in NY and I'm on T-Mobile.
Click to expand...
Click to collapse
That's pretty good news.
Can you confirm the model number of yours (On box, printed on the back of the handset in feint print) - I'm assuming this is a "U-1u"
If you can also let us know the version number of your firmware - Settings, About, and then Software Info. If you got an Intl' charger it might be China or Hong Kong stock (Taiwan uses the same plugs as US).
So the Hong Kong (and Taiwan) version states: FDD：B1/B3/B5/B7/B8/B20/B28 TDD：B38/B39/B40/B41, and T-Mo in the USA uses B2 / B4 and B12. So its obvious that the support does exist, just simply not denoted appropriately on the website.
Great news.
Question - are those phones, that are/are not Dual SIM supporters, different in Hardware or just software manipulated limitations? I am asking this as my phones doe not recognize second SIM, but if I were to flash it with unlocked software for dual SIM, would it work? Thank you!
[email protected] said:
Question - are those phones, that are/are not Dual SIM supporters, different in Hardware or just software manipulated limitations? I am asking this as my phones doe not recognize second SIM, but if I were to flash it with unlocked software for dual SIM, would it work? Thank you!
Click to expand...
Click to collapse
I'm not sure about that, but I tried 2 ROMs which supported dual SIM, and those weren't able to use the 2nd SIM/sd slot.. not sure about any customizations inside the rom/kernel/whatever though
OK I understand that, still, I am wondering if there are actual hardware limitations for the dual sim or just software, never mind the ROM...
I have buy my phone yesterday and it is a Single SIM phone for EU market (Made In Taiwan) and with productID number finishing with ...100. Dual SIM phones ID finishing with ...200.
I put my sim card to second (mSD/nSIM) slot and i when i turn on phone i have 2 sim cards drawed onphone (one empty and another (absent sim) with a full signal but crossed mark...
Hmmm, sims like have second SIM card software blocked ?
The same thing is happening on my Single SIM (EU) phone. If I insert the second SIM into the 2nd SIM slot, the phone recognizes it and displays a full signal bar with a crossed mark. Obviously, the hardware is capable of handling the second SIM (otherwise it would not be detected at all), but it's crippled in software. So far I did not find a way to unlock Dual SIM support.
Did anyone of you guys try flashing a rom with dual SIM support?
Hi i found main difference between Single Sim and Dual Sim HTC U Ultra :
NETWORK3
2G/2.5G GSM/GPRS/EDGE
Single SIM
850/900/1800/1900 MHz
Dual SIM
850/900/1800/1900 MHz
3G UMTS
Single SIM
AWS/850/900/1900/2100 MHz
HSDPA 42, HSUPA 5.76
Dual SIM
850/900/1900/2100 MHz
HSDPA 42, HSUPA 5.76
4G LTE™ (up to 600Mbps)
Single SIM
FDD: Bands 1, 2, 3, 4, 5, 7, 8, 12, 17, 20, 28
TDD: Bands 38, 39, 40, 41 with 2CA, 3CA
Support Cat 11 LTE: downloads up to 600Mbps, uploads up to 50Mbps
VoLTE and WiFi calling
Dual SIM
FDD: Bands 1, 3, 5, 7, 8, 20, 28
TDD: Bands 38, 39, 40, 41 with 2CA, 3CA
Support Cat 11 LTE: downloads up to 600Mbps, uploads up to 50Mbps
VoLTE and WiFi calling
It appears that Single Sim is made to work with AWS. >>>>> AWS is used in the United States, Argentina, Canada, Colombia, Mexico, Chile, Paraguay, Peru, Ecuador and Uruguay.
and supports more bands then Dual sim one. I think flashing dual sim softwer version will change nothing since you still wont be able to use 2 sim cards.
I was mislead from some reviews, including gsmarena, that said HTC Ultra only had a dual sim version and I bought the phone. Unfortunately it doesn't support the 2nd sim. In my case it doesn't even have any icon crossed... I wonder why does it have the place holder for a second sim...
Anyone was successeful in accessing the 2nd sim on a single sim version? (model number ending in "100")
Actually I've also tried a bit to get dual SIM to work on my single SIM device, but flashing dual SIM activated ROMs wasn't enough and I've no idea what I could try now.
Maybe ask one of the ROM developer's?
Guys i dont think it is possible since as i posted above it is in some way different device. Same as you cant enable more bands support on dual sim version by software.
Sent from my Mi Note 3 using Tapatalk
I'm contemplating a purchase for a Mate 9 with dual SIM capability ( from Kogan Australia). It's advertised with dual SIM. For me, the secondary SIM would only add value if I can use it on 3G, while I keep the main SIM on 4G.
But in some documentation, the secondary SIM only supports 2G. Has anyone successfully used Mate 9 with 4G+3G SIM combination.
andrewsc said:
I'm contemplating a purchase for a Mate 9 with dual SIM capability ( from Kogan Australia). It's advertised with dual SIM. For me, the secondary SIM would only add value if I can use it on 3G, while I keep the main SIM on 4G.
But in some documentation, the secondary SIM only supports 2G. Has anyone successfully used Mate 9 with 4G+3G SIM combination.
Click to expand...
Click to collapse
For sure....! I also think 4G+4G can work...
If the Australian version is the same as the European version it will support 2G, 3G and 4G on SIM 1 whilst SIM 2 will support 2G and 3G.
Sent from my MHA-L29 using Tapatalk
3G would be great on SIM 2. The problem I'm trying to solve is that our Australian telco ( Optus ) has severely degraded its own mobile network, to the point where we can't receive voice calls anywhere in our suburb. LTE used to work well, not any more. On the other hand, they improved somewhat on their 3G network. My wife is still in contract with cheap plan. So I could arrange a dual-SIM where SIM 1 is on 4G with another telco, while SIM 2 stays at 3G with the old telco. Things may improve for their network, or the company is going down, we shall see.
4G/3G is how it does it.
Both will support 4G but you'll need to put the switcher setting on your homescreen so you can switch quickly - you can't have both on 4G but both will support it. The other will be able to use 3G.
Having received the S8 from Gearbest , and inserting a new Mintsim sim card I have been unable to get a data connection using the current MintSim APN settings. I am not a real phone teckie but I almost believe there are no options to make (via engineering mode) changes to get the phone compatible with U.S. carriers. Any suggestions would be helpful.
Not sure if updating the modem.img is an option. I don't see too many US carrier phones using the MTK6750T processor. I just get 2g edge on t-mobile. Not a bad phone if I could get 4g.
rctomes said:
Having received the S8 from Gearbest , and inserting a new Mintsim sim card I have been unable to get a data connection using the current MintSim APN settings. I am not a real phone teckie but I almost believe there are no options to make (via engineering mode) changes to get the phone compatible with U.S. carriers. Any suggestions would be helpful.
Click to expand...
Click to collapse
I have considered buying one of these phone's myself as it does look rather nice
This phone supports bands
2G: GSM 850/900/1800/1900MHz
3G: WCDMA 900/2100MHz
4G: FDD-LTE 800/900/1800/2100/2600MHz
AT&T vs T-Mobile (Mintsim)
https://support.t-mobile.com/docs/DOC-4988
https://www.att.com/esupport/article.html#!/wireless/KM1069631
There is a comment about the Doogee Mix 2 regarding support on the at&t link which shares the same bands.
I do not live in the USA so cant really comment too much about what does and does not work.
Hi Everyone
My note 20 ultra 5 G snapdragon version
Roaming sim note deduct it since last update only one sim is working also network operators it's completely disabled When i test the roaming sim in note 9 phone its working also 5G icon its on it self when i tray it to off its on it self
Please find settings screen shot
wkharposh66 said:
Hi Everyone
My note 20 ultra 5 G snapdragon version
Roaming sim note deduct it since last update only one sim is working also network operators it's completely disabled When i test the roaming sim in note 9 phone its working also 5G icon its on it self when i tray it to off its on it self
Please find settings screen shot
Click to expand...
Click to collapse
Which model/firmware CSC code are you using? Can you still connect on 5G with non-roaming sim cards?
silmarils said:
Which model/firmware CSC code are you using? Can you still connect on 5G with non-roaming sim cards?
Click to expand...
Click to collapse
I have snapdragon HK version updated to Android 11. I'm Using in Egypt no 5G Network her the 2 sim are Etisalat Local network And Dialog Sri Lanka as Roaming Network. Phone was working without any problems until 11th of May after that Roaming and Mobile Networks Menus are disabled.. Also i test it the roaming sim in note 9 phone it works ok.