Database Users

LTE 4G Bands

Hello I have a problem with my LG G2 (D802) Europe model! My carrier have relase 4G in bands 38B 2600 MHz TDD buth lg g2 d802 not have this bands, has instead bands TDD 40B 2300 Mhz!
I can add this bands on my g2?
The new license the company in 2600 MHz band (TDD) has been acquired by a process of transfer of RCS & RDS and 2K Telecom, with the agreement of the National Authority for Management and Regulation in Communications (ANCOM).
Click to expand...
Click to collapse
Thank you in advance! And sorry for my bad English!

Unfortunately these bands are not something we can add/remove but some chips are hardware capable only that they're restricting them for some reasons.
LE: https://www.youtube.com/watch?v=AYe4CLJzmQg#t=76
Try to follow the clip above if you are from RO(the guy who made this wrote the instructions in romanian), should give you what you wanted but apparently everybody is still complaining about band 38 not doing much

I'm also in the same situation, i keep finding stuff that leads me to think that it's possible, first of all the snapdragon 800 supports LTE band 38, there are several threads that have unlocking guides and claim in the first post that several devices have been unlocked (I did not manage on mine unfortunately).
From what i've seen the One plus one has managed to unlock that LTE band, a Galaxy S5 and several phones that have MTK chipsets (with only root access and an app).
So unlocking LTE bands is not impossible (if there is hardware support of course) .
Really hope someone will give us some useful info on this. (we got 4g and extra 10gb of traffic for free, but only on 4g)

[Q]How can I unlock LTE network?

Hi,everyone.
It may be a foolish question. But I'm not a pro (both in unlocking and English), and I'm not sure if there is a little possibility. Here's my question.
I have a redmi note LTE(Qualcomm) and I bought the chinese TD version by mistake, the network provider's frequency works on WCDMA/FDD- LTE.
And TD version supports GSM/ TD-SCDMA/TD- LTE but FDD ver supports GSM/ WCDMA/ FDD- LTE/ TD- LTE.
So Now I'm using GSM?
I found that both of the TD and FDD version are using same hardware, so I'm wondering if it's possible to unlock it?
Thank you!

Its not possible. Fdd and td have different hardware.

As Killerrade said you can't unlock a frequency, it needs specific hardware which it doesn't have. It's not like when carriers lock it.

@Killerrade @PeteSco
Ah how awful I can only use 2G…
Anyway, thank you guys for replying, at least I know it is impossible now.
Oh almost forgot, Happy New Year!

A way to enable more LTE bands to ZenFone 2 Laser (ZE500KL)

Hello to all,
I have a ZenFone 2 Laser (ZE500KL). Asus support said me that is a Taiwanese version.
The issue is that is not working with LTE network in my country, only with 2G and 3G. Here is used AWS1 that is the same AWS band 4 (1700/2100 MHz) 1700 for uplink and 2100 for downlink. Asus support said me that I have nothing to do since is a hardware issue because the antenna doesn't work in 1700/2100.
Is there a way to know if this handset could be enabled to work with LTE AWS Band 4?
Thanks in advance for any help.
Regards

First thing first, I'm sorry if my reply did not help you, and this is based on my limited understanding...
Simple answers would be nothing, nothing you can do if this is "hardware" limitation as asus told you.
Now the explanation, note that I'm not knowledgeable about this thing, so I don't think could give a meaningful explanation.
From what I've read, LTE, on different country use different band (1700, 2100, etc). And by that, just say *not the real reason, just play along with it*, "device built by limiting hw capabilities to certain band, to work on region A, because that device didn't meant to work/used outside region A" . This might the reason, you could see asus with WW or TW variant. They limit the device hardware to work only with certain band range.
This is hardware, not software/firmware (if you compare it to like some "unlocked provider device") . So you can't do anything about it.
This is like, using CDMA phone with GSM card, they work at different band. AFAIK it didn't work, cmiiw.
Oh, IIRC, old phone (before Android born) mostly have triband (GSM) you might won't be able to use your device outside your country. Then, newer phone, till now, use quad band to support usability around the globe. cmiiw
I hope you get what I'm trying to say there~
I don't know what it mean about LTE aws 1 / aws 4, I don't think this is just band length (1700/2100).
# sorry for my bad english
Sent from my ASUS_Z00RD using XDA Labs

Frequency band issue on axon 7 a2017u - please help friends!!!

hi friends I bought an axon 7 on amazon, the model number is a2017u.
I checked with sims from 2 major carriers in my country and first issue is frequently I am getting no service warning and literally I cannot use the phone for call and sms for daily use. Throughout the day it mostly says no service.
Next issue is phone is not support 3g band and it should as the spec says. Will explain later on this post please keep read on.
before I purchasing I asked clearly on amazon answers whether this support in my country, sri lanka the answers were yes it should work in my country.
And also, I have checked the frequency bands in my country and the model above whether they are compatible each other.
Supported bands by the phone model a2017u as official ZTE site mentioned are: (check the specification section in
• GSM/EDGE:B2/3/5/8
• CDMA BC0/1/10
• UMTS/HSPA: B2/B5/B4/B1/B8
• LTE: B2/B4/B5/B12/B13/B17/B7/B3/B1/B20/B29/B30/B25/B26/B41
• 2CA: B2+B4, B2/4+B12, B2/4+B29, B2/4+B5, B41+B41, B25+B25
In gsm arena also here are the bands support by usa model above
• 2G bands - CDMA 800 / 1900 - USA
• 3G bands - HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 - A2017G, USA
• 4G bands - LTE band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 12(700), 13(700), 17(700), 20(800), 25(1900), 26(850), 29(700), 30(2300), 41(2500) – USA
In sri lanka support bands are
• 2G capabilities - GSM 900, GSM 1800
• 3G capabilities - UMTS 2100
• 4G capabilities - LTE 1800
With all the above verified information, can some of you who actually familiar with these technical stuff, confirm this phone should work in my country?
Because when I contacted official zteusa online chat they say my country may not support even I clearly explain that if the band is support it should work but they are not very supportive and they end up saying the same thing again and again.
I spent over more than 400 usd for the phone with shipping and clearance and everything and now I cannot use the phone for my daily use. And on the otherside zte support team is not supportive while I am going with the facts.
Please some experts here help me how to solve this situation. The frequency bands doesnot depend on the country right ? if the same band 2100 support for 2 different countries then it should work like the same isn’t it ? not just for USA right ?
And “No Service” status of the sim that i am getting frequently almost every time also due to that frequency band thing or hardware defect of the phone ? any thoughts ?
please clarify someone who know these stuffs well.
Please help friends I am really tired of this situation looking for answers. Sadly there is no official agent for zte brand in our country. So I am stuck here. With all the facts above phone should work in my country right?

bump

anyone to help please ?

Try this ( http://willmyphonework.net/ ) site.

minighost said:
hi friends I bought an axon 7 on amazon, the model number is a2017u.
I checked with sims from 2 major carriers in my country and first issue is frequently I am getting no service warning and literally I cannot use the phone for call and sms for daily use. Throughout the day it mostly says no service.
Next issue is phone is not support 3g band and it should as the spec says. Will explain later on this post please keep read on.
before I purchasing I asked clearly on amazon answers whether this support in my country, sri lanka the answers were yes it should work in my country.
And also, I have checked the frequency bands in my country and the model above
Click to expand...
Click to collapse
No service warning: bad reception area or defective phone, you need to go close from any cellular tower and check there.
Is your phone in and out of 3g band?
Is your phone in and out LTE band?
Read above.
You do a great job searching for bands and carriers from your country, I bet for a defective device. Sorry

Altomugriento said:
No service warning: bad reception area or defective phone, you need to go close from any cellular tower and check there.
Is your phone in and out of 3g band?
Is your phone in and out LTE band?
Read above.
You do a great job searching for bands and carriers from your country, I bet for a defective device. Sorry
Click to expand...
Click to collapse
hi mate first of all thanks for the reply.
i checked 4g and its working but in my country there is no much coverage. so 3g is wt we have to use mainly here. and 3g band is not working. but specs says otherwise.
can you confirm if band support as an example 3g - 2100 band in here and USA then the phone should work in both countries without any issues right ?
and no service thing is appear most of the time in daily basis and time to time appear actual service provider name and signal bar but mostly saying no service. this cause the GSM band right ?
i dont have much technical knowledge in that area. thats why i need to confirm this mate. bz zteusa site support team seems like not taking the responsibility here. so i have to go with the confirmed facts u knw. thanks again for the support mate.

bump

You can change sim card
Or:
do a full factory reset to the terminal
Stop asking for a magic trick, that's not going to happen.
This is simple: put another sim card, or do a full reset. It's a basic thing.
You choose the wrong phone if in your country the cellular signal is weak. Do you want an advice? Return the phone and ask for a refund.

Try to flash A2017G bootstack provided by DrakenFX
https://forum.xda-developers.com/axon-7/development/rom-guide-updates-to-stock-files-via-t3469484
(Of course, before that you have to unlock bootloader, instal twrp... all guild can be found around xda)

Pro 3 x727 - UMTS B4 (1700/2100 AWS 1) Frequency?

I'm eyeing this phone to replace my well worn S5. Does anyone know for sure if the x727 variant has the UMTS B4 1700/2100Mhz? The listings on the various Chinese sites are hit and miss, that's why I'm looking for first hand info. Based on my research the x720 appears to have 3G band 4, but it is unclear if the x727 does.
Thanks!

x727 is the NA version, which launched alongside the US version of Le Eco's online store. It supports B2/4/12 and VoLTE + WiFi calling on T-Mobile.

I'm planning to use it on Freedom Mobile in Canada on their 3G network (not LTE), that's why AWS band 4 on 3G is a requirement.
Thanks.

paradoxum said:
I'm planning to use it on Freedom Mobile in Canada on their 3G network (not LTE), that's why AWS band 4 on 3G is a requirement.
Thanks.
Click to expand...
Click to collapse
T-Mobile US also relies on 1700/2100 AWS B4 for HSPA/UMTS. LTE discovery shows the LTE band, so I'm not sure how to do the same for HSPA.

I found the FCC application for the x727 and the SAR exposure report lists WCDMA band 4 @ 1700Mhz, so I'm good to go. Coincidentally it appears the device has the highest radiation level on that band.
page 4:
https://apps.fcc.gov/eas/GetApplicationAttachment.html?id=3160895
The full FCC application can be found here:
https://apps.fcc.gov/oetcf/eas/repo...d=tRbB27x6FnmQ5/KxMnrdWw==&fcc_id=2AFWMLEX727
Thanks for you help.