As an emerging niche in the smartphone industry as dual-sim versions is starting to reach in the flagship models of HTC, Samsung, LG, etc...and the increasing demands in dual-sim market in India, China, Russia and elsewhere, until now there is no widget supporting the signal strength and network info's simultaneously of both dual standby networks, and probably one of the reason their is it is not a standard API, I hope Zooper will pioneer this and a support on its widget, as previously been requested also in zooper site forum. thank you.
neozoby said:
As an emerging niche in the smartphone industry as dual-sim versions is starting to reach in the flagship models of HTC, Samsung, LG, etc...and the increasing demands in dual-sim market in India, China, Russia and elsewhere, until now there is no widget supporting the signal strength and network info's simultaneously of both dual standby networks, and probably one of the reason their is it is not a standard API, I hope Zooper will pioneer this and a support on its widget, as previously been requested also in zooper site forum. thank you.
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you should flash your device to do it
dual simcard is really helpful
but eionLoca
Hi,
I also think that the dual SIM type of smartphones are pretty useful... but is not that the signal strength is in charge of the telecom carriers?
I thought that depending on your location and how near you are from a network infrastructure it was that the signal's strength varies
Anyhow, I didn't know the Zooper app, what does it has to do with the improvement of signal's strength in dual SIM devices?
Regards
Related
Hi
Im looking for a TP2, I will use it outside USA mainly, is there any differences in the phone model between what is offered by the carries (I mean the case, the colors, the device modules as gps, radio or whatever, the keyboard)
As i have noticed that the T-Mobile unit is another color from the at&t and have differences in the keyboard, are there any recommendations on what to look for on this phone?
It seems that the only current options are T-Mob and At&t as they are GSM (it seems that t-mob dont have the chrome bezel or 3g support, and at&t has those but dont have camera)
There are some minor differences between the two , there was alink that gave a great deal of info on both phones that is better then this one below
http://forum.xda-developers.com/showthread.php?t=573092
ahh here it is
http://pdadb.net/index.php?m=pdacom...&id3=1792&id4=1829&id5=1766&id6=1989&id7=1751
thank you very much for the links
I see that the cdma phones (verizon, sprint) have a gsm sim port, is that true? can a TP2 cdma phone (when unlocked) be used with any sim on a gsm network? (mostly because im not very fond on the t-mob version)
Lioric said:
thank you very much for the links
I see that the cdma phones (verizon, sprint) have a gsm sim port, is that true? can a TP2 cdma phone (when unlocked) be used with any sim on a gsm network? (mostly because im not very fond on the t-mob version)
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No CDMA and sim are two different things
The Major Carrier Technologies
By now, you’ve probably heard all of the acronyms in the alphabet soup of carrier technologies. The two major terms that pertain to cellular phone communication that you’re likely to run into are GSM and CDMA, the two major technologies service providers use to carry voice signals across the network. But what are they and why do they matter? Well, for starters, let’s define the terms.
GSM (Global System for Mobile Communications). GSM is the “branded” term referring to a particular use of TDMA (Time-Division Multiple Access) technology. GSM is the dominant technology used around the globe and is available in more than 100 countries. It is the standard for communication for most of Asia and Europe. GSM operates on four separate frequencies: You’ll find the 900MHz and 1,800MHz bands in Europe and Asia and the 850MHz and 1,900MHz (sometimes referred to as 1.9GHz) bands in North America and Latin America. GSM allows for eight simultaneous calls on the same radio frequency and uses “narrowband” TDMA, the technology that enables digital transmissions between a mobile phone and a base station. With TDMA the frequency band is divided into multiple channels which are then stacked together into a single stream, hence the term narrowband. This technology allows several callers to share the same channel at the same time.
CDMA (Code Division Multiple Access). CDMA takes an entirely different approach from GSM/TDMA. CDMA spreads data out over the channel after the channel is digitized. Multiple calls can then be overlaid on top of one another across the entire channel, with each assigned its own “sequence code” to keep the signal distinct. CDMA offers more efficient use of an analog transmission because it allows greater frequency reuse, as well as increasing battery life, improving the rate of dropped calls, and offering far greater security than GSM/TDMA. For this reason CDMA has strong support from experts who favor widespread development of CDMA networks across the globe. Currently, you will find CDMA mostly in the United States, Canada, and North and South Korea. (As an interesting aside, CDMA was actually invented for the military during World War II for field communications.)
Domestic Travel
The cellular showdown: CDMA (Code Division Multiple Access) vs. GSM (Global System for Mobile Communications).
Because you can find GSM and CDMA in use all across the United States, it might seem at first that it really doesn’t matter which technology you choose. This is not so. When you travel abroad, the likelihood that you will reach areas that do not have digital service is quite high. Anytime you travel between offices via car, train, or bus you will pass through rural and suburban areas that only offer analog access. Most CDMA cell phones include analog capability (also known as roaming), so a user can make calls when he is not in a digital cellular service area. GSM phones usually don’t offer this capability unless you purchase and use a specialty (read: expensive) handset. Of course in most of Asia and in Europe, this is not a problem because digital service is available almost everywhere you turn. This does become an issue for users in North America, however, because digital service is rarely available there.
Another difference between GSM and CDMA is in the data transfer methods. GSM’s high-speed wireless data technology, GPRS (General Packet Radio Service), usually offers a slower data bandwidth for wireless data connection than CDMA’s high-speed technology (1xRTT, short for single carrier radio transmission technology), which has the capability of providing ISDN (Integrated Services Digital Network)-like speeds of as much as 144Kbps (kilobits per second). However, 1xRTT requires a dedicated connection to the network for use, whereas GPRS sends in packets, which means that data calls made on a GSM handset don’t block out voice calls like they do on CDMA phones.
If you care about 3G go for Tilt2, if not go for unbranded!
I think is the best design/look of all of them
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Guys! go and vote please!
Rhodium needs you
yes, thank you very much for the detailed answers
But the Cdma version of the phones (TP2) claim to be "world phones", as in the sprint phone (cdma) in the feature list they mention that they support GSM when traveling outside of the US and that you can put a GSM sim
Sprint TP2 features:
Cellular_Networks: CDMA800, CDMA1900
Cellular+Data:Links: cdmaOne, CDMA2000 1xRTT, CDMA2000 1xEV-DO
Secondary-Cellularhone
Dual:Cellular+Network;Operation: Selectable cellular module
Secondary_Cellular_Networks: GSM850, GSM900, GSM1800, GSM1900, UMTS900, UMTS2100
Secondary;Cellular Data:Links: CSD, GPRS, EDGE, UMTS, HSDPA, HSUPA
from h t t p://pdadb.net/index.php?m=specs&id=1792&view=1&c=sprint_touch_pro2_htc_rhodium_w
I would prefer the unbranded phone but only the external case design (at least for me) don't justifies the 600 to 700 bucks price tag, sprint ot tmob can be find for 360
I think I will go with a Sprint or Verizon model, even when they are CDMA they seem be dual cell (cdam and gsm) and they will work just fine on any GSM network
Hello,
I'm going to buy a Nokia XL 4G, but I have two very important questions before buy it.
For first there is connection. I yet know 4G connection is working in china only, but about 3G connection it features both td-scdma and wcmcda, but in Nokia Site there is written that wcmcda 'works on international roaming', so I'm in Italy. If I use the telephone with an italian sim card, will it works in 3g with wcmcda even if I'm not using international roaming?
If not, considering the wcmcda frequence is available in the phone, will it be possible to set it as normal frequence instead of td-scmda?
The second question is, will it be possible to use custom firmwares from normal Nokia X and XL event if it has different cpu and ram? Or at least, considering it has the same software platform, obtaining root access in the same way of normal Nokia X?
No one knows it?
First, I don;t know what you mean.
Second, Probably yes.
3g networks go on different frequencies in base of the country.
The 3g standard in europe is called wcdma, the chinese standard is called td-scdma.
If a telephone has td-scdma only, it can't works in europe.
In Nokia XL 4G it features both td-scdma and wcdma.. but in Nokia.cn site there is written a little note at the voice wcdma:"Works on international roaming only". Some chinese operators use both standards, so both td-scdma and wcdma are available in china.
In Nokia XL 4G wcdma has a maximum speed of 7.2mbps and td-scdma 2.36mbps.. so for sure "on international roaming only" means that a chinese sim card in china can't use wcdma. But it could also means that a local sim card of a country that has wcdma standard only can't use it because it's not in international roaming state.
I'd like to ask If someone knows if it works in wcdma without international roaming.. of else I don't know, if someone has a Nokia XL 4G in an european country can respond me.
Is there any hope to obtain some responses?
I was on a chat session last night with a OnePlus sales rep. He had informed me that there were 'plans' to release another variant of this phone, potentially to cater to the AUSTRALIAN, or other international markets.
This is good news, should it come true, for fans of this phone who don't own the device; as it's severely lacking bands on its 3G/4G radio.
This phone has fantastic specs at a good price. The only thing preventing a purchase from the majority of the southern hemisphere (there's actually a BIG market there, OnePlus :cyclops, is the unnecessary blocking or availability of more 3G and 4G LTE bands. In Australia, band 28 / 700Mhz is commonly used for the fastest 4G connections with the premium carrier int his county (Telstra) and there's others for different AUS carriers also not supported. A massive blunder in my book.
Does anyone have any more information on their plans or availability? I couln't get anything out of the guy because he was 'not a developer'.
RoOSTA
roosta said:
I was on a chat session last night with a OnePlus sales rep. He had informed me that there were 'plans' to release another variant of this phone, potentially to cater to the AUSTRALIAN, or other international markets.
This is good news, should it come true, for fans of this phone who don't own the device; as it's severely lacking bands on its 3G/4G radio.
This phone has fantastic specs at a good price. The only thing preventing a purchase from the majority of the southern hemisphere (there's actually a BIG market there, OnePlus :cyclops, is the unnecessary blocking or availability of more 3G and 4G LTE bands. In Australia, band 28 / 700Mhz is commonly used for the fastest 4G connections with the premium carrier int his county (Telstra) and there's others for different AUS carriers also not supported. A massive blunder in my book.
Does anyone have any more information on their plans or availability? I couln't get anything out of the guy because he was 'not a developer'.
RoOSTA
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May be he was talking about Oneplus 3T...
ram4ufriends said:
May be he was talking about Oneplus 3T...
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Could be. Only "rumoured" specs out there. Would make sense if its a phone released in the next 20 days. Probably KNEW the information but was cautious about giving it out.
Intriguing.
RoOSTA
Is this the only phone we're potentially dealing with though, the OP3T in next 2-3 months?
I'm curious to know what model people received direct from Moto in the US. My Z Play was given as a gift and bought from Best Buy, but it's XT1635-02, which I keep reading is an International model.
For those in the US that bought direct from Motorola, what's your model number?
mostcallmerob said:
I'm curious to know what model people received direct from Moto in the US. My Z Play was given as a gift and bought from Best Buy, but it's XT1635-02, which I keep reading is an International model.
For those in the US that bought direct from Motorola, what's your model number?
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The same XT 1635-02...
I ordered my Moto Z Play Droid direct from Motorola, and got model number XT1635-01
XT1635-01 is the Verizon US variant, XT1635-02 is the US AND international varaints, XT1635-03 is the chinese variant. XT1635-02 can be either dual or single sim, and only differs in the software channels(retus, reteu, retla, etc). I think XT1635-03 is dual sim only, but im not sure. If you want to confirm your device is for the US market, go to settings > About phone and check the software channel which should read retus.
Seems silly that they would use the same model number for different regions with different band support. Confusing
catpunt said:
Seems silly that they would use the same model number for different regions with different band support. Confusing
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All XT1635-02 variants support the same GSM bands. XT1635-03 supports the chinese WCDMA bands and probably some GSM bands. XT1635-01 supports US CDMA bands and some GSM bands. Arguably motorola probably just disabled the CDMA and WCDMA bands on the XT1635-02 so that people would actually buy the phone from verizon as opposed to buying it from the manufacturer. Which verizon made a deal with them to try and grab more customers by saying "Look at this innovative new phone! Only here at Verizon!" as is clearly obvious by the phone being exclucive for a few months before international release.
jon7701 said:
All XT1635-02 variants support the same GSM bands. XT1635-03 supports the chinese WCDMA bands and probably some GSM bands. XT1635-01 supports US CDMA bands and some GSM bands. Arguably motorola probably just disabled the CDMA and WCDMA bands on the XT1635-02 so that people would actually buy the phone from verizon as opposed to buying it from the manufacturer. Which verizon made a deal with them to try and grab more customers by saying "Look at this innovative new phone! Only here at Verizon!" as is clearly obvious by the phone being exclucive for a few months before international release.
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Perhaps, but that doesn't support why the Europe and USA versions of the unlocked XT1635-02 have different band support. Seems like this wouldn't have anything to do with Verizon exclusivity, and if the hardware support is there, why not make all bands available for true world support?
catpunt said:
Perhaps, but that doesn't support why the Europe and USA versions of the unlocked XT1635-02 have different band support. Seems like this wouldn't have anything to do with Verizon exclusivity, and if the hardware support is there, why not make all bands available for true world support?
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Checking motorola's site on the band support, XT1632-02 retus supports UMTS band 1700, reteu does not, however reteu support LTE bands 25 and 41, while retus does not. One of the reasons companies love proprietary software is because they can get away with doing things they dont want you to know about. Motorola can disable select bands on different variants and knows you have no way of enabling them (or even knowing if you can) since you do not have access to their source code. I cannot say for 100% sure that every variant supports the same bands hardware wise, but it would cost motorola more money to manufacture the phone with 3 or 4 different radios than it would be to just include 1 radio and then disable what they dont want you to access. The support I have that they do use this practice is because all XT1635-02 still have the pins for a second sim even on the single sim models. This would reduce manufacturing costs by skipping an unneeded step of seperating the phones between dual and single sim. On the Moto X Play some people were even able to activate the second sim on single sim only models. If you were around during the Nexus 4 era, Google intentionally disabled 4G LTE on that phone for seemingly no reason. Devs were able to figure that out and were able to unlock the 4G LTE capabilities. About Verizon exclucivity, if motorola disables the CDMA bands on their international model, you have to buy your phone from verizon if you want to use it on verizon. Lenovo (Motorola) has had big success with verizon exclucives from their droid series and they want to keep it that way. So in order to make costumers keep buying Droid phones they make it so that you have buy from verizon if you want CDMA support or you're SOL. This also allows verizon to lock down what CDMA carriers the phone can be used on (Which currently is only verizon AFAIK). Why they dont just enable all bands on all models is a good question, but once again it could have to do with the Verizon exclucivity because remember the verizon model was the first to be released. You had to buy the phone from verizon or motorola in order to get it which helps the Droid series sell. Releasing the phone 3 months later with global support could hurt the Droid series and potentially piss of customers.
jon7701 said:
Checking motorola's site on the band support, XT1632-02 retus supports UMTS band 1700, reteu does not, however reteu support LTE bands 25 and 41, while retus does not. One of the reasons companies love proprietary software is because they can get away with doing things they dont want you to know about. Motorola can disable select bands on different variants and knows you have no way of enabling them (or even knowing if you can) since you do not have access to their source code. I cannot say for 100% sure that every variant supports the same bands hardware wise, but it would cost motorola more money to manufacture the phone with 3 or 4 different radios than it would be to just include 1 radio and then disable what they dont want you to access. The support I have that they do use this practice is because all XT1635-02 still have the pins for a second sim even on the single sim models. This would reduce manufacturing costs by skipping an unneeded step of seperating the phones between dual and single sim. On the Moto X Play some people were even able to activate the second sim on single sim only models. If you were around during the Nexus 4 era, Google intentionally disabled 4G LTE on that phone for seemingly no reason. Devs were able to figure that out and were able to unlock the 4G LTE capabilities. About Verizon exclucivity, if motorola disables the CDMA bands on their international model, you have to buy your phone from verizon if you want to use it on verizon. Lenovo (Motorola) has had big success with verizon exclucives from their droid series and they want to keep it that way. So in order to make costumers keep buying Droid phones they make it so that you have buy from verizon if you want CDMA support or you're SOL. This also allows verizon to lock down what CDMA carriers the phone can be used on (Which currently is only verizon AFAIK).
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Thanks for the detailed info.
One weird thing is this: according to http://willmyphonework.net/ the unlocked USA version of the Moto Z Play has partial T-Mobile 3G and 4G support, while the unlocked Europe version has partial T-Mobile 3G support and full 4G support. However the unlocked Mexico version apparently has full 2G/3G/4G support. ??? Sounds like the USA version is actually the worst in terms of band support for T-Mobile.
catpunt said:
Thanks for the detailed info.
One weird thing is this: according to http://willmyphonework.net/ the unlocked USA version of the Moto Z Play has partial T-Mobile 3G and 4G support, while the unlocked Europe version has partial T-Mobile 3G support and full 4G support. However the unlocked Mexico version apparently has full 2G/3G/4G support. ??? Sounds like the USA version is actually the worst in terms of band support for T-Mobile.
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Funny enough on their motorola's own website, they say the US version only has partial support for AT&T and full support for T-Mobile. https://www.motorola.com/us/carrier-compatibility I guess we'll never know whats going through the minds of the people at Lenovo. I also added a bit to my previous post about the global bit of your question.
Something to remember is that for most handset manufacturers, the carrier is their customer, not you. When handset manufacturers have a new phone to sell, they hand-make some prototypes and hawk them around the carriers (networks). If the network likes it, they will usually say "I'll only take it if it has this, this and this, and has that, that and that removed". Manufacturer then does some horse trading, hence "that would be uneconomic to remove from hardware, but we can disable it in the firmware".
Eventually they reach agreement and the network says "deal, I'll take 500,00" (for example) and agrees the payment. It's those advance payments (or borrowing against them) that fund the cost of production, and hopefully leave some profit left over for the manufacturer. This is why what the networks want always takes precedence - international unlocked sales are always a complete unknown, and usually a very small part of total sales. For most handset manufacturers, it's those exclusive deals with networks that keep the lights on. Only the iPhone ever bucked that trend, by being seen as a single product with such high demand that it gave the manufacturer more power than the networks. Android phones are divided between lots of different models and multiple manufacturers, which means that the manufacturer's bargaining power for a single model is very limited.
jon7701 said:
Funny enough on their motorola's own website, they say the US version only has partial support for AT&T and full support for T-Mobile. https://www.motorola.com/us/carrier-compatibility I guess we'll never know whats going through the minds of the people at Lenovo. I also added a bit to my previous post about the global bit of your question.
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Are you saying the info on the moto site isn't 100% correct? I wanted to get one of these for AT&T but it shows it is only somewhat compatible compared to Tmobile i
also see no checkmark by republic wireless, but I know for a fact RW is selling them on their website, and there is even a RW promo taking place in a few days with the z play
x000x said:
Are you saying the info on the moto site isn't 100% correct? I wanted to get one of these for AT&T but it shows it is only somewhat compatible compared to Tmobile i
also see no checkmark by republic wireless, but I know for a fact RW is selling them on their website, and there is even a RW promo taking place in a few days with the z play
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I have AT&T and am having no issues with signal. I get EDGE, HSPA, HSPA+, and LTE. I actually get better signal on AT&T than I did on verizon on my Moto X Pure (AT&T also costs me almost 3x less as well ). AT&T uses LTE bands 2, 4, 5, 17, and recently (from what ive heard) 12. XT1635-02 retus supports all of those bands (it lists supported bands on the box).
Hi everybody! I bought this phone and works nice except lte. LTE is available only in big city not in my town In compare with my old LG g3 that has lte signal in my town... I think it is because of chinese lte bands, right? Is there any chance to solve it? I'm from europe. Thanks for any idea!
I bet your operator uses LTE 800Mhz outside cities and Z2 doesn't have that frequency. No way around this. Use 3G instead outside of cities.
Tautologica said:
I bet your operator uses LTE 800Mhz outside cities and Z2 doesn't have that frequency. No way around this. Use 3G instead outside of cities.
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4g on 800mhz which country?
zerocool420 said:
4g on 800mhz which country?
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E.g. Poland. Sometimes outside big cities, mobile operators still use this frequency.
Crusio83 said:
E.g. Poland. Sometimes outside big cities, mobile operators still use this frequency.
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ok..
LTE band 5(850mhz) in Indian retial unit?
Can someone with the Indian retail unit confirm whether it supports LTE band 5(850mhz)? Since many sellers locally here in India are mentioning it as supported but it is missing in Lenovo India's website's product specification.
Thanks
Yes it does.