Open/unlock LTE Band 4 and Band 7 - Xiaomi Redmi Note 4 Questions & Answers

I have searched on the internet that Redmi Note 4 hardware supports LTE Band 4 and Band 7, but the MIUI 8 itself locks those two bands.
I am located in North America that only those two LTE bands supported. Is there a way to open those two bands ?
at the moment, my phone can only use 3G.
thanks

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Do you mean this?
I see band 7 but not band 4.
I had a look in here before too see if any bands were not enabled but there is only the one (AWS 1700)

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Wilderone said:
Do you mean this?
I see band 7 but not band 4.
I had a look in here before too see if any bands were not enabled but there is only the one (AWS 1700)
Click to expand...
Click to collapse
Band 4 is disabled ? or cannot be opened ?
what software did you use to view the table ?
thanks

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Galaxy_Galaxy said:
Band 4 is disabled ? or cannot be opened ?
what software did you use to view the table ?
thanks
Click to expand...
Click to collapse
Yes so band 4 it seems is not enabled by default.
It looks like anything in the table that is greyed out cannot be enabled so I am assuming that it's hardware dependant.
The only band that isn't greyed out & that can be enabled is as I noted before (AWS-1700)
Sorry I forgot that :/
Its Engineering Mode dial *#*#3646633#*#*
Sent from my Redmi Note 4 using Tapatalk

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yes, you are right, Note 4 only support following Bands :
FDD-LTE：Band 1 / 3 / 5 / 7 / 8
TDD-LTE：Band 38 / 39 / 40 / 41
Another question, Fido (the carrier here) supports Band 7 , but my phone cannot get the LTE mode, only 3G max . Do I have to enable band 7 manually ?
thanks

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My provider uses Band 7, no problems connecting to 4G for me.

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Wilderone said:
Do you mean this?
I see band 7 but not band 4.
I had a look in here before too see if any bands were not enabled but there is only the one (AWS 1700)
Click to expand...
Click to collapse
I see there are more UMTS bands available than what are enabled.
It's not a possibility to enable LTE Band 20 (800MHz), is it?
Recently ordered one and expected I'd have to live with Band 1 (2100MHz) and Band 3 (1800MHz) here in Norway
If Band 20 is available but just secretly disabled, that'd be very nice.

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Checked in the engineer mode. The following bands are enabled by default :
FDD-LTE：Band 1 / 3 / 5 / 7 / 8
TDD-LTE：Band 38 / 39 / 40 / 41
I just enable the AWS 1700 ans Press set, but when I reboot the phone, it goes back to disable ?

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Since Redmi Note 4X and Redmi Note SD have the same hardware, can the LTE bands unlocked in Note 4X be unlocked in Note 4 SD as well. Or is it possible to unlock the bands by the process in the Oneplus and Sony sections for Quallcomm devices?

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Can you unlock band 2, 12 and/or 17 on global version of the the Redmi Note 4? (the one with band 4 and 20)

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My Note 4 SD625 can't enter that engineering​ mode. But my LTE works fine here in Malaysia. But it's not that fast compared to my LG G4. Is Redmi N4 supports an LTE-A network? I've seen the SD625 specification and it supports advanced LTE, but my N4 aren't fast enough for only 2mb/s over my G4's 5mb/s on actual download speed.

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well redmi note 4x in taiwan and hong kong has lte band 4 http://www.mi.com/hk/redminote4x/specs/
is it a diferent hardware as in redmi note 3 pro with kenzo and kate phones?
雙卡使用說明：
兩張 SIM 卡不能同時使用 4G 網絡，
當其中一張 SIM 卡為 4G 網絡時，另外一張 SIM 卡為 3G/2G 網絡。
網絡頻段：
FDD-LTE B1/B3/B4/B5/B7/B8/B20
TDD-LTE B38/B40
WCDMA 850/900/1900/2100MHz (B1/B2/B5/B8)
GSM 850/900/1800/1900MHz (B2/B3/B5/B8)

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I'm curious if the Note 4 Global can have Band 28 unlocked. I had the Kate prior to this and it had band 20 and 28, not sure why they couldn't have Band28 on the Redmi Note 4 Global

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Wilderone said:
Yes so band 4 it seems is not enabled by default.
It looks like anything in the table that is greyed out cannot be enabled so I am assuming that it's hardware dependant.
The only band that isn't greyed out & that can be enabled is as I noted before (AWS-1700)
Sorry I forgot that :/
Its Engineering Mode dial *#*#3646633#*#*
Sent from my Redmi Note 4 using Tapatalk
Click to expand...
Click to collapse
That doesn't work on my Redmi note 4 global edition. (4x) I'm trying to figure out if there is band 4 unlocked on this or if they sent me the wrong version.

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H4pl0 said:
That doesn't work on my Redmi note 4 global edition. (4x) I'm trying to figure out if there is band 4 unlocked on this or if they sent me the wrong version.
Click to expand...
Click to collapse
Only works on Mediatek Redmi Note 4
Sent from my Redmi Note 4 using Tapatalk

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Any break throughs on lte band unlocking? I edited my line 6828. I power off the phone. Power back on and check signal guru. Guru shows same lte bands at before editing line NV 6828. Is there another NV line for lte? Please assist as I saw no change in enabled bands when editing that line.
When I wiped data for signal guru it showed the bands I unlocked. No extra bands have worked on the 4x for me tho.

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I opened the NON-HOLS modem bin and was digging around in the code. I was unsuccessful at putting the code from a global MI note 2 modem onto mido. Someone also modified their boot.img and was able to tell the phones which bands to use. I was unsuccessful on both endeavor

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How to unlock LTE band-1 in SD version?

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Any progress on unlocking band 20? I did not realize that the 4X I bought from ebay does not have band 20....

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ram1MB said:
My Note 4 SD625 can't enter that engineering​ mode. But my LTE works fine here in Malaysia. It is just not fast compared to my LG G4. Is Redmi N4 supports an LTE-A network? I've seen the SD625 specification and it supports advanced LTE, but my N4 aren't fast enough for only 2mb/s over my G4's 5mb/s on actual download speed.
Click to expand...
Click to collapse
I have the same question in my mind too. I'm not connected to lte-A network although I'm in the zone. Wonder how to unlock it.