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Unlock LTE bands

Hi, I bought a Xiaomi mi4i from China recently but cannot use 3g (900mhz) and LTE 4G b1 (800mhz) in the Spain , I would like unlock this bands , I read other threads but was for mi4 .... I know that other phones with this processor had this bands (zte blade S6) .
Sorry form my english.

I think the bands mi 4i work on are
3gHSDPA-(850), (1900), (2100)
4g/LTE-3(1800), 7(2600), 38(2600), 39(1900) 40(2300) 41(2500)
I dont see ur band and sorry but i have no knowledge of unlocking other bands dont know if u can actually do that to phone but u check with the Carriers which work on these bands in ur area that can solve it
P.s it greatly depends on the carrier then changing bands on ur phone
Tho this might help
http://forum.xda-developers.com/showthread.php?t=3084774

regarding VoLTE in Mi4i
Can anybody say Mi4i can work for VoLTE or any coding/debugging is required ??
Because in india new coming operator is using VolTE -1800(B3), TDD 2300(B40) & 850(B5)

Can the Huawei Ascend Mate 7 Gold Model MT7-TL10 not support 4G LTE in the US?

Hi Everyone-
I posted a question somewhat related to this yesterday but didn't really get an exact answer and I'm getting very confusing and mixed reviews online so I'm trying again as I really want to order a new phone asap but want to make sure I'm still getting 4G LTE. I currently have the Ascend Mate 2 and get 4G LTE just fine on my network. I use Cricket here in US and I'm having trouble narrowing down what bandwidth they use. I've heard 1900 but I'm not sure. I also think they use AT&T towers. Does anyone have any info/advice on this?
On the one I'm looking at on Ebay (it won't let me post a link sorry) it says it supports the following:
2G bands GSM 850 / 900 / 1800 / 1900
3G bands HSDPA 850 / 900 / 1900 / 2100
4G bands LTE 1800 / 2100 / 2600 TD-LTE 1900 / 2300 / 2500 / 2600 (Bands 1, 3, 7, 38, 39, 40, 41)
If the MT7-TL10 cannot support 4G LTE in the US can the other version? The Silver MT7-L09 or whatnot?
Thanks!

Hey, I noticed that you didn't get any answers to this question.
I have an MT7-TL10 mainland China (gold edition) and I am not getting 4G LTE on AT&T, only 3G.
I've looked into this question also; it seems that AT&T uses bands 2, 4, 5, and 17.

Bery_ said:
Hey, I noticed that you didn't get any answers to this question.
I have an MT7-TL10 mainland China (gold edition) and I am not getting 4G LTE on AT&T, only 3G.
I've looked into this question also; it seems that AT&T uses bands 2, 4, 5, and 17.
Click to expand...
Click to collapse
Thank you! From other boards/research that is kind of what I gathered. I ended up getting the cheaper silver version (MT7-L09) since that does get 4G LTE here in the US.

Sunshine32 said:
Hi Everyone-
I posted a question somewhat related to this yesterday but didn't really get an exact answer and I'm getting very confusing and mixed reviews online so I'm trying again as I really want to order a new phone asap but want to make sure I'm still getting 4G LTE. I currently have the Ascend Mate 2 and get 4G LTE just fine on my network. I use Cricket here in US and I'm having trouble narrowing down what bandwidth they use. I've heard 1900 but I'm not sure. I also think they use AT&T towers. Does anyone have any info/advice on this?
On the one I'm looking at on Ebay (it won't let me post a link sorry) it says it supports the following:
2G bands GSM 850 / 900 / 1800 / 1900
3G bands HSDPA 850 / 900 / 1900 / 2100
4G bands LTE 1800 / 2100 / 2600 TD-LTE 1900 / 2300 / 2500 / 2600 (Bands 1, 3, 7, 38, 39, 40, 41)
If the MT7-TL10 cannot support 4G LTE in the US can the other version? The Silver MT7-L09 or whatnot?
Thanks!
Click to expand...
Click to collapse
I have the silver MT7-L09 on MetroPCS and I get great 4G LTE coverage in the Miami area. Hope that helps. As far as I know from when I was researching which one to get the TL10 won't get you 4G LTE in the U.S.

HUAWEI Honor X2 GEM-702L 4G - (newb)

I'm in the UK,
Will a Phone SIM from Three UK network work in the HUAWEI Honor X2 GEM-702L 4G ?
the reason I ask here rather than Three support is because those guys previously steered me wrong,
any advice appreciated before I order this phone from China, thanks guys.

nikev215 said:
I'm in the UK,
Will a Phone SIM from Three UK network work in the HUAWEI Honor X2 GEM-702L 4G ?
the reason I ask here rather than Three support is because those guys previously steered me wrong,
any advice appreciated before I order this phone from China, thanks guys.
Click to expand...
Click to collapse
In the UK the bands used are bands 1,3,7,8 and 20. The Gem-702L has bands 1,3,7 and 8 but not band 20. I'm pretty sure band 20 is the lower mhz (800 MHz) band for in building coverage (similar to T-Mobile's band 12 here in the US) You should get LTE just fine but in buildings where LTE coverage isn't the greatest you may only get 3G as the X2 doesn't utilize band 20 in the UK. From what I see for Three is that they use 2100mhz for 3G and 800mhz and 1800mhz for 4G. The X2 doesn't have 800mhz but has 1800 mhz so 4G should work.

Sorry. Posted on the wrong thread.

I am on Three in Austria here use "3" LTE 2600 and 1800 MHz perfect for Mediapad X2 703L and 702L,since the two have no Band20
But Three in UK use LTE Bands 1800 and 800MHz,only Mediapad X2 701L supports 800MHz (Band 20)
But LTE 800 is used only in rural areas and in the city the 1800MHz

Hiya, I'm on the 3 network in the uk, GEM 702L and I have no problem with 4g or any other network issues.
Bought the phone from 'Oxford Street' on amazon, not directly from china.

many thanks guys,
it turns out the phone I have ordered is the GEM 703L version, according to the Huawei web site it uses the following 4G bands
1800MHz (Band 3)
2100MHz (Band 1)
2600MHz (Band 7)
UK Three network uses 4G on
1800MHz (Band 3)
800MHz (Band 20)
and 3G on
2100MHz (Band 1)
it should be OK.
.

XT1557 frequencies

Hi,
I'm thinking of getting myselft a moto g 2015 turbo edition xt1557.
I am ready to give up on band 20 (seems to be impossible to unlock it on snapdragon devices) and living with 3g where 4g is only delivered on band 20.
While I was roaming the internet I landed upon an italian page that gives all information about chinese handsets.
Among those informations there is a worrying one:
european 3g bands are 900 Mhz and 2100 Mhz. Same as China, but they can't be used as EU uses UMTS-FDD, while China uses UMTS-TDD.
I think I understood that merlin was for the Indian market. Since I can't find this information anywhere else, could someone tell me which 3g merlin uses?
Thank you very much indeed for your help in advance.
Have a nice one.

sweetsuicides said:
Hi,
I'm thinking of getting myselft a moto g 2015 turbo edition xt1557.
I am ready to give up on band 20 (seems to be impossible to unlock it on snapdragon devices) and living with 3g where 4g is only delivered on band 20.
While I was roaming the internet I landed upon an italian page that gives all information about chinese handsets.
Among those informations there is a worrying one:
european 3g bands are 900 Mhz and 2100 Mhz. Same as China, but they can't be used as EU uses UMTS-FDD, while China uses UMTS-TDD.
I think I understood that merlin was for the Indian market. Since I can't find this information anywhere else, could someone tell me which 3g merlin uses?
Thank you very much indeed for your help in advance.
Have a nice one.
Click to expand...
Click to collapse
Keep in mind that country and service provider play a significant role as well, just because a band is available in the EU doesn't mean that your provider has access to it. There was also a thread discussing unlocking freq bands, but it hasn't been too active lately, so I wouldn't put a lot of faith in that option.......
as for the bands,
xt 1557 uses :
2G : GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G : HSDPA 850 / 900 / 2100 -
4G : LTE band 1(2100), 3(1800), 7(2600), 8(900), 28(700), 40(2300) - XT1557
(* source - gsm arena.)
Hope that helps.

Thank you

Enable Hidden Bands on BLN-L24 Variant?

Hello...
This phone supports all B3 bands in its international version... but the US varian BLN-L24 has no conectivity on 3G 900 MHz and 4G 1800 MHz ... is it possible to enable those 2 bands..? I don´t mind if any other band stops working after that I just need those 2 ... is there any method..? hidden menu? flash..? rebrand..? please help