I got a chance to purchase the vzw gs4 for $250 under a one year contract for very good plans
Wondering if the contract expires, will i be able to use other gsm carriers?
AFAIK, i545 should come unlocked and can be used on att hspa and tmo lte(band4), am i right?
Just wondering if i545 has lte band 17 for att, or has anybody tried putting an att sim to i545 yet?
Another question I know verizon is notorious for not pushing timely system updates, but how far are the custom roms from the 9505g rom?
Thanks for your input
i saw in the 9500 dev section somebody wasn't able to enable tmob lte for this model which seems wired
has anybody tried att sim card?
Why is the thread moved automatically to Q/A section though
michael3770 said:
i saw in the 9500 dev section somebody wasn't able to enable tmob lte for this model which seems wired
has anybody tried att sim card?
Click to expand...
Click to collapse
A simple search would tell you that many of us have used non-VZ SIM cards. The phone is SIM-unlocked.
Here's the bands that the Verizon S4 has:
LTE 750 / 1700
WCDMA 850 / 1900 / 2100
CDMA 850 / 1900
GSM 850 / 900 / 1800 / 1900
[from http://www.phonescoop.com/phones/phone.php?p=4066 ]
T-Mobile uses 1700 for LTE, so there appears to be a match.
For AT&T, 700, 1700, 2300 for LTE. 1700 is the common band.
[from http://en.wikipedia.org/wiki/List_of_LTE_networks ]
k1mu said:
A simple search would tell you that many of us have used non-VZ SIM cards. The phone is SIM-unlocked.
Here's the bands that the Verizon S4 has:
LTE 750 / 1700
WCDMA 850 / 1900 / 2100
CDMA 850 / 1900
GSM 850 / 900 / 1800 / 1900
[from http://www.phonescoop.com/phones/phone.php?p=4066 ]
T-Mobile uses 1700 for LTE, so there appears to be a match.
For AT&T, 700, 1700, 2300 for LTE. 1700 is the common band.
[from http://en.wikipedia.org/wiki/List_of_LTE_networks ]
Click to expand...
Click to collapse
I don't the bands on phonescoop is correct
samsung listed i545 to have LTE band 4 which is 1700/2100
One other thread mentioned Tmobile LTE cannot achieved on this model, only hspa
Att use Band 4,17, not 2300 for LTE
I'm just wondering if anyone has tried to hack the radio as they did for i535
michael3770 said:
I don't the bands on phonescoop is correct
samsung listed i545 to have LTE band 4 which is 1700/2100
One other thread mentioned Tmobile LTE cannot achieved on this model, only hspa
Att use Band 4,17, not 2300 for LTE
I'm just wondering if anyone has tried to hack the radio as they did for i535
Click to expand...
Click to collapse
OK, so here's a reliable source - Samsung. http://www.samsung.com/us/mobile/cell-phones/SCH-I545ZWAVZW-specs
LTE: Bands 4/13 (Band 4 is 1700 MHz, band 13 is 700 MHz)
CDMA 1x/EVDO Rev.A: 800/1900MHz
HSPA+/UMTS: 850/900/1900/2100MHz
GSM: 850/900/1800/1900MHz
I don't understand the various 1700 MHz band allocations, so I can't say if Tmo's band 4 is compatible with VZ's band 4 radio.
"Hack the radio" meant enabling radios that were built in to the phone which VZ disabled. I don't think that's the case with the VZ S4.
k1mu said:
I don't understand the various 1700 MHz band allocations, so I can't say if Tmo's band 4 is compatible with VZ's band 4 radio.
Click to expand...
Click to collapse
as far as I know there aren't various 1700MHz allocations. In such case, every allocation must have their own band, like Band 2 and Band 25. Both of them are in the 1900MHz but with diferent allocations.
So any LTE Band 4 enable device should work in any LTE band 4 carrier.
Sent from my SCH-I545 using xda app-developers app
dennis5pia said:
as far as I know there aren't various 1700MHz allocations. In such case, every allocation must have their own band, like Band 2 and Band 25. Both of them are in the 1900MHz but with diferent allocations.
So any LTE Band 4 enable device should work in any LTE band 4 carrier.
Sent from my SCH-I545 using xda app-developers app
Click to expand...
Click to collapse
That's what I thought
according to this post it's not i don't know why
http://forum.xda-developers.com/showthread.php?t=2400799
michael3770 said:
That's what I thought
according to this post it's not i don't know why
http://forum.xda-developers.com/showthread.php?t=2400799
Click to expand...
Click to collapse
According to this post it does.
http://forum.xda-developers.com/showpost.php?p=44206677&postcount=20
Bottom line any LTE band 4 enable device will work in any LTE band 4 carrier.
Sent from my SCH-I545 using xda app-developers app
Related
Hello All,
I am on tmobile and had samsung galaxy s before i got SGS2 from at&t (my wife upgraded). i unlocked/rooted the phone after reading through the posts and it worked like a charm!
My concern right now is that I am always on edge data network with tmobile. can anyone help me on this. Tethering is also not much of use when i am on the slowest connection. Please help.
Can't do much about it since AT&T version doesn't support the 3g/4g band for T-mobile.
At&t gs2 doesn't support t-mobile frequency for 3 g.
Sent from my SAMSUNG-SGH-I777 using xda premium
I thought this phone has all the bands to support all networks.
parags1982 said:
I thought this phone has all the bands to support all networks.
Click to expand...
Click to collapse
No only AT&T.
My guess is that international version supports all the bands not the carrier branded sgII
^Even international version doesn't support T-Mobile 3g/4g (HSPA+) network.. Not many phones support their network. Or maybe it will.. but not everywhere
AT&T SGSII
2G Network GSM 850 / 900 / 1800 / 1900
3G Network HSDPA 850 / 1900 / 2100
T-Mobile SGSII
2G Network GSM 850 / 900 / 1800 / 1900
3G Network HSDPA 1700 / 2100
International SGSII
2G Network GSM 850 / 900 / 1800 / 1900
3G Network HSDPA 850 / 900 / 1900 / 2100
I am following another post that lets says HOW TO: "Enable 850Mhz 3G Network Frequency on your Samsung i9000 Galaxy S''. will update how it goes... fingers crossed..
parags1982 said:
I am following another post that lets says HOW TO: "Enable 850Mhz 3G Network Frequency on your Samsung i9000 Galaxy S''. will update how it goes... fingers crossed..
Click to expand...
Click to collapse
No luck. i read somewhere that i may need to install another modem?
Is there anyone out there with the same issue as mine?
any experts out there?
parags1982 said:
I thought this phone has all the bands to support all networks.
Click to expand...
Click to collapse
The AWS (1700) bands are supported only by a handful of carriers. It doesn't exist at all in Europe and Asia. There's little reason for manufacturers to include it on their global phones as so few people use it. It's the reason the T-Mobile SGS2 has a Qualcomm chip instead of Exynos like the rest of them. After the merger, it won't even exist in the U.S. any longer as AT&T plans on using it (1700) for LTE. If you want versatility and the ability to use unlocked phones, change to AT&T.
parags1982 said:
I am following another post that lets says HOW TO: "Enable 850Mhz 3G Network Frequency on your Samsung i9000 Galaxy S''. will update how it goes... fingers crossed..
Click to expand...
Click to collapse
In order to get T-mo 3G, a phone must support HSPA on 1700MHz AWS band, not 850MHz. As such, only phones from T-Mo or some Candadian carrier support 1700 band. Rest of the world use 900/2100 for 3G and AT&T uses 850/1900 for 3G/4G.
You are never going to get 3G on T-Mo on any phones from AT&T. Period. Give it up.
foxbat121 said:
In order to get T-mo 3G, a phone must support HSPA on 1700MHz AWS band, not 850MHz. As such, only phones from T-Mo or some Candadian carrier support 1700 band. Rest of the world use 900/2100 for 3G and AT&T uses 850/1900 for 3G/4G.
You are never going to get 3G on T-Mo on any phones from AT&T. Period. Give it up.
Click to expand...
Click to collapse
thanks. i give up
TMobile uses 1700 up, 2100 down. If the handset doesn't support 1700, you are out of luck.
Correct. Many phones support the 2100 MHz International band.
T-Mobile's network is weird though, and uses both 1700 and 2100 MHz at the same time.
My guess is that UMTS1700 support and not 42 Mbps HSPA+ is why the T-Mobile variant of the GS2 is such an oddball phone.
NO AT&T phone and only a small handful of international phones support T-Mobile's 1700 MHz band.
Similarly, only one or two T-Mobile phones (The Vibrant being one of them) support any of AT&T's 3G bands, but none support all of AT&T's 3G bands to my knowledge.
The interesting thing about this entire thing is that if you go into the modem band selection it lists 5 different wcdma bands including the aws 1700. I enabled those bands and tried using a tmo sim but alas it still only worked on edge. It may have just been there cosmetically rather then actually supporting aws bands. use dialer code *#2263# to access the band selection menu. Maybe there is a way to get it to work.
pb1866 said:
The interesting thing about this entire thing is that if you go into the modem band selection it lists 5 different wcdma bands including the aws 1700. I enabled those bands and tried using a tmo sim but alas it still only worked on edge. It may have just been there cosmetically rather then actually supporting aws bands. use dialer code *#2263# to access the band selection menu. Maybe there is a way to get it to work.
Click to expand...
Click to collapse
I agree with you and have tried exactly what you did (along with other bands) but still not working.
pb1866 said:
The interesting thing about this entire thing is that if you go into the modem band selection it lists 5 different wcdma bands including the aws 1700. I enabled those bands and tried using a tmo sim but alas it still only worked on edge. It may have just been there cosmetically rather then actually supporting aws bands. use dialer code *#2263# to access the band selection menu. Maybe there is a way to get it to work.
Click to expand...
Click to collapse
Typically, the s/w supports multiple versions of h/w. Just because an option's in the menu doesn't mean the h/w's available to support it. The same thing happened with the T-Mobile G2X. It was supposed to be quad-band, the option was in the ROM, but the radio wasn't there to support all the bands.
Can I use the GS3 with Exynos on T-Mobile HSPA+? or is it not compatible?
Serious_Beans said:
Can I use the GS3 with Exynos on T-Mobile HSPA+? or is it not compatible?
Click to expand...
Click to collapse
i answered this in a locked thread. international SGS3 on T-Mo USA will only get you Edge speeds. so the answer to your question is no, it is not compatible with HSPA+.
mrvirginia said:
3G (HSPA+ 21Mbps): 850 / 900 / 1900 / 2100MHz
4G (HSPA+ 42Mbps): 1700/2100
LTE: 700/1700
in other words, you'd get Edge if you used an international version on Wind/Mobilicity. this would be the same as if i imported an international version and used it on T-Mobile US.
Wind/Mobilicity/Videotron = T-Mobile US (same bands)
Telus/Bell/Rogers/etc = ATT (same bands)
Click to expand...
Click to collapse
If you're dead set on the Exynos for Tmo, I hope your smothered in wifi all day or your area gets refarmed to 1900 MHz HSPA sooner than later...
Sent from my Galaxy Nexus using Tapatalk 2
Want to get the s3 but want to make sure it works with TMobile.
No, you will only get edge speeds, no 3g.
Sent from my GT-I9300 using xda premium
It works for me. Bought my unbranded, non-simlocked phone in Europe. Visiting US now. Daily plan with T-Mobile works fine for me.
Sent from my GT-I9300 using Tapatalk 2
shaft77 said:
It works for me. Bought my unbranded, non-simlocked phone in Europe. Visiting US now. Daily plan with T-Mobile works fine for me.
Sent from my GT-I9300 using Tapatalk 2
Click to expand...
Click to collapse
And you are getting 3g speeds??
I doubt that, the international version doesn't have the frequency for tmo's 3g.
Sent from my GT-I9300 using xda premium
i also tried my att i747 sgs iii after i unlocked it with a t mobile sim.. works but also only get edge.. maybe it would work if i flashed the t mobile modem?
lgkahn said:
i also tried my att i747 sgs iii after i unlocked it with a t mobile sim.. works but also only get edge.. maybe it would work if i flashed the t mobile modem?
Click to expand...
Click to collapse
Sorry I pressed thanks instead of quote.
No, its nothing to do with the modem. If it was, people all over the world would be buying devices from other countries.
The fact is the international GSM version only works on the frequencies its designed to work on. This is a hardware limitation and no amount of software will resolve that.
International frequencies are different to USA frequencies and as such, devices not designed for the USA will not work to their full potential in the USA.
UK (international) uses 900 Mhz/1800Mhz GSM/3G where as USA T-mob uses 1900Mhz GSM and 2100Mhz 3G.
Because the International GSM quad band device is:
850/900/1800/1900 MHz...
The GSM and 2G function works on 1900 (T-mob) but has no way to use 2100 for 3G as its not physically possible
Edit:
USA Carrier Voice Frequencies (MHz) 3G 4G Notes
AT&T 850 (Band 5)/ 1900(Band 2) 850 / 1900 Band 17 (700MHz)/AWS (1700/2100 MHz) GSM
MetroPCS 1900 / AWS 1900 / AWS AWS CDMA
Sprint 1900 1900 2500 / 1900 G-Block CDMA
T-Mobile USA 1900 AWS(1700/2100 MHz)/PCS (1900) AWS (1700/2100 MHz) GSM
Verizon 800 / 1900 800 / 1900 700 / AWS CDMA (GSM for 4G)
http://en.wikipedia.org/wiki/Cellular_frequencies
rootSU said:
Sorry I pressed thanks instead of quote.
No, its nothing to do with the modem. If it was, people all over the world would be buying devices from other countries.
The fact is the international GSM version only works on the frequencies its designed to work on. This is a hardware limitation and no amount of software will resolve that.
International frequencies are different to USA frequencies and as such, devices not designed for the USA will not work to their full potential in the USA.
UK (international) uses 900 Mhz/1800Mhz GSM/3G where as USA T-mob uses 1900Mhz GSM and 2100Mhz 3G.
Because the International GSM quad band device is:
850/900/1800/1900 MHz...
The GSM and 2G function works on 1900 (T-mob) but has no way to use 2100 for 3G as its not physically possible
Edit:
USA Carrier Voice Frequencies (MHz) 3G 4G Notes
AT&T 850 (Band 5)/ 1900(Band 2) 850 / 1900 Band 17 (700MHz)/AWS (1700/2100 MHz) GSM
MetroPCS 1900 / AWS 1900 / AWS AWS CDMA
Sprint 1900 1900 2500 / 1900 G-Block CDMA
T-Mobile USA 1900 AWS(1700/2100 MHz)/PCS (1900) AWS (1700/2100 MHz) GSM
Verizon 800 / 1900 800 / 1900 700 / AWS CDMA (GSM for 4G)
http://en.wikipedia.org/wiki/Cellular_frequencies
Click to expand...
Click to collapse
yes i agree for international version.. but if you read closer i DONT have the international version but the att version.. and as far as i know all the usa versions are the same with just diff. modems.
The international version will work in areas where T-Mobile is refarming 1900mhz to 3G. However this is only happening in parts of the coasts. I'm using it in Ohio and getting EDGE only. That said, it isn't too bad.
Sent from my GT-I9300 using Tapatalk 2
joshnichols189 said:
The international version will work in areas where T-Mobile is refarming 1900mhz to 3G. However this is only happening in parts of the coasts. I'm using it in Ohio and getting EDGE only. That said, it isn't too bad.
Sent from my GT-I9300 using Tapatalk 2
Click to expand...
Click to collapse
Erm, it's being tested in some coastal areas, but the 3g/hspa+ over the 1900 band is slated to go live on the majority of the network by the end of the year.
Sent from my GT-I9300 using Tapatalk 2
No service HELP or clairfication PLEASE
I purchased a Tinji i9300. I have been working on this for over 3 weeks. I have no service with T-mobile. It recognizes my SIM card as T-mobile. In Engineer Mode, my bands are, EGSM900, DCS1800, PCS1900, GSM850, WCDMA-IMT-2000. I have tried numerous ROMs (stock and custom) and have rooted the phone. I have changed the IMEI. No service at all. Any thoughts? Band issue? T-mobile issue? Possible solution? **** out of luck? :crying:
Thank you!
I want to know if with the international lumia 920 will work with ATT 4g LTE
http://www.gsmarena.com/nokia_lumia_920-4967.php
http://www.gsmarena.com/nokia_lumia_900_at&t-4275.php
lovenokia said:
I want to if with the international lumia 920 will work with ATT 4g LTE
http://www.gsmarena.com/nokia_lumia_920-4967.php
http://www.gsmarena.com/nokia_lumia_900_at&t-4275.php
Click to expand...
Click to collapse
I'm curious too. I refuse to buy the Lumia in black off of Rogers and the AT&T model is likely to be unlockable like the 900 was.
Add one more request to that. I'm not eligible for an upgrade until next year, so I'll be paying full price for my Lumia 920. I'd rather get the unbranded version if I go that route, since I won't have AT&T blocking any updates that they're notorious for doing.
Hopefully someone will answer this, that att logo looks ugly, and they block updates, so I need to know this, and two others too.
Sent from my Nexus 7 using xda premium
It will work fine -
http://www.nokia.com/global/products/phone/lumia920/specifications
Operating Frequency
Frequency bands
GSM 850
GSM 900
GSM 1800
GSM 1900
WCDMA Band V (850)
WCDMA Band VIII (900)
WCDMA Band IV (1700)
WCDMA Band II (1900)
WCDMA Band I (2100)
LTE 700
LTE 800
LTE 850
LTE 900
LTE 1700
LTE 1800
LTE 1900
LTE 2100
LTE 2600
herzzreh said:
It will work fine -
http://www.nokia.com/global/products/phone/lumia920/specifications
Operating Frequency
Frequency bands
GSM 850
GSM 900
GSM 1800
GSM 1900
WCDMA Band V (850)
WCDMA Band VIII (900)
WCDMA Band IV (1700)
WCDMA Band II (1900)
WCDMA Band I (2100)
LTE 700
LTE 800
LTE 850
LTE 900
LTE 1700
LTE 1800
LTE 1900
LTE 2100
LTE 2600
Click to expand...
Click to collapse
Unless Nokia did something extraordinary, I really do not believe they will release the phone with 9 LTE bands.
The original specs was PentaBand LTE and the AT&T LTE Bands were missing. Meaning the international version will NOT work on AT&T's 4G LTE.
Please see my post here for more information.
Here's an interesting article about unlocked/international phones. I found it pretty informative.
http://www.cnet.com/8301-17918_1-57527428-85/how-phones-are-optimized-and-why-you-should-care-smartphones-unlocked/
I may just resign myself the AT&T version.
Make a simple answer yes or no? The att lte phone have lte 2100 so does the international lumia 920.
Sent from my Nexus 7 using xda premium
lovenokia said:
Make a simple answer yes or no? The att lte phone have lte 2100 so does the international lumia 920.
Sent from my Nexus 7 using xda premium
Click to expand...
Click to collapse
Yes. According to the current specs both have LTE at 2100Mhz.
It seems like the Samsung Galaxy Alpha has all the necessary bands to be used with AT&T in the US. But does anyone know for sure? If Samsung takes too long to release this in America can I buy the UK version and use it in the US?
Thanks
derekmarch said:
It seems like the Samsung Galaxy Alpha has all the necessary bands to be used with AT&T in the US. But does anyone know for sure? If Samsung takes too long to release this in America can I buy the UK version and use it in the US?
Thanks
Click to expand...
Click to collapse
Bump. I have the same question.
GSM Arena says this about the device:
2G Network GSM 850 / 900 / 1800 / 1900
3G Network HSDPA 850 / 900 / 1900 / 2100
4G Network LTE 800 / 850 / 900 / 1800 / 1900 / 2100 / 2600
If what wikipedia says, AT&T uses the following frequencies:
2G: 850 / 1900.
3G: 850 / 1900.
4G: 700 block B (main frequency) / 1700 AWS / 1900 / 2300.
So, if I read correctly, you can use the international Alpha for 2&3G, but for LTE, you are covered only by one LTE band, 1900, and this being not a main frequency, won't have good coverage everywhere, I think.
sirobelec said:
GSM Arena says this about the device:
2G Network GSM 850 / 900 / 1800 / 1900
3G Network HSDPA 850 / 900 / 1900 / 2100
4G Network LTE 800 / 850 / 900 / 1800 / 1900 / 2100 / 2600
If what wikipedia says, AT&T uses the following frequencies:
2G: 850 / 1900.
3G: 850 / 1900.
4G: 700 block B (main frequency) / 1700 AWS / 1900 / 2300.
So, if I read correctly, you can use the international Alpha for 2&3G, but for LTE, you are covered only by one LTE band, 1900, and this being not a main frequency, won't have good coverage everywhere, I think.
Click to expand...
Click to collapse
Does this pertain to HSPA+ too?
blairh said:
Does this pertain to HSPA+ too?
Click to expand...
Click to collapse
HSPA+ is 3G, so you shouldn't have problems with it.
sirobelec said:
HSPA+ is 3G, so you shouldn't have problems with it.
Click to expand...
Click to collapse
So I'd get HSPA+ anywhere I'd get it from an AT&T phone, just not LTE necessarily?
blairh said:
So I'd get HSPA+ anywhere I'd get it from an AT&T phone, just not LTE necessarily?
Click to expand...
Click to collapse
Yes. If it was me to make the decision, I'd want my phone with an unlocked bootloader, HSPA+ is good enough speed for me.
Though, practically, I've never tested LTE in my life, until recently we didn't have any 4G networks.
International Galaxy Alpha NO US LTE on ATT or TMO
derekmarch said:
It seems like the Samsung Galaxy Alpha has all the necessary bands to be used with AT&T in the US. But does anyone know for sure? If Samsung takes too long to release this in America can I buy the UK version and use it in the US?
Thanks
Click to expand...
Click to collapse
I bought an unlocked international/Euro Galaxy Alpha SM-G850F at the London Samsung store... Installed my USA ATT SIM and have no prob w. calls or H or H+ data but can NOT get LTE band in the USA on either ATT or TMO even though the device seems to have the right bands for ATT or TMO LTE. On advice from an ATT Wireless store manager, I updated my APN settings to match ATT setup but still did not get LTE. FYI my H+ is quite fast for most purposes but I want LTE. Hope that answers your question.... Mine is how can I get LTE???
stevensmiami said:
I bought an unlocked international/Euro Galaxy Alpha SM-G850F at the London Samsung store... Installed my USA ATT SIM and have no prob w. calls or H or H+ data but can NOT get LTE band in the USA on either ATT or TMO even though the device seems to have the right bands for ATT or TMO LTE. On advice from an ATT Wireless store manager, I updated my APN settings to match ATT setup but still did not get LTE. FYI my H+ is quite fast for most purposes but I want LTE. Hope that answers your question.... Mine is how can I get LTE???
Click to expand...
Click to collapse
Are you sure the European version has correct U.S. LTE bands? I was under the impression that it does not....
stevensmiami said:
I bought an unlocked international/Euro Galaxy Alpha SM-G850F at the London Samsung store... Installed my USA ATT SIM and have no prob w. calls or H or H+ data but can NOT get LTE band in the USA on either ATT or TMO even though the device seems to have the right bands for ATT or TMO LTE. On advice from an ATT Wireless store manager, I updated my APN settings to match ATT setup but still did not get LTE. FYI my H+ is quite fast for most purposes but I want LTE. Hope that answers your question.... Mine is how can I get LTE???
Click to expand...
Click to collapse
phositadc said:
Are you sure the European version has correct U.S. LTE bands? I was under the impression that it does not....
Click to expand...
Click to collapse
Originally Posted by sirobelec
GSM Arena says this about the device:
2G Network GSM 850 / 900 / 1800 / 1900
3G Network HSDPA 850 / 900 / 1900 / 2100
4G Network LTE 800 / 850 / 900 / 1800 / 1900 / 2100 / 2600
If what wikipedia says, AT&T uses the following frequencies:
2G: 850 / 1900.
3G: 850 / 1900.
4G: 700 block B (main frequency) / 1700 AWS / 1900 / 2300.
So, if I read correctly, you can use the international Alpha for 2&3G, but for LTE, you are covered only by one LTE band, 1900, and this being not a main frequency, won't have good coverage everywhere, I think.
I am trying to solve this also.
I think that the Euro Version with the Exynos does not have the proper LTE Bands for North America LTE.
But the Qualcomm version does, though not sure about
TMobile.
I am looking at this from Canada GSM for $ 549. Factory Unlocked with following Bands:
2G Network GSM 850 / 900 / 1800 / 1900
3G Network HSDPA 850 / 900 / 1900 / 2100
4G & LTE 2100, 1900, 1800, 1700, 2600, 700, 850
Obviously for AT&T you just buy theirs.
I have read that the EXYNOS versions do not function in North America on LTE.
With all phones it seems that you must be very very
Specific about Model Numbers including Suffixes etc.
Especially SAMSUNG loves to make 24 versions of ALPHA, 50 versions of S4 etc.
Frequency Bands are a real WTF for amateurs like me:
For example are there TWO DIFFERENT 1700 bands, one for4G LTE and one for 3G , HSPA + or are they the SAME BAND with dual usage ?
In example ABOVE the Alpha Factory Unlocked Canada GSM @$ 549.
IF used for TMobile the LTE Bands look fine, but the 3G
1700 Band is not there. Will 3G merely use the 1700 LTE
band or does the SOC ( QUALCOMM) need to have
allocated the 1700 band for dual usage LTE and.3G
?