Poco F1 US LTE Bands 2 & 4 Unlock Possible?? (No Longer Being Pursued) - Xiaomi Poco F1 Questions & Answers

Current Status as of 10th Nov 2018 - This effort is no longer being pursued.
Mi 8 qcn is available (thx to @JR_44) https://forum.xda-developers.com/showpost.php?p=78020802&postcount=184
When I open it in a hex editor to swap out the IMEIs I dont see anything relevant. https://forum.xda-developers.com/showpost.php?p=78120935&postcount=186
This effort is no longer being pursued. You have @jaimani on xda and also xda (@MishaalRahman) works with Poco in providing free devices to developers so maybe they can ask Poco if this is even possible.
Current Status as of 28th October 2018.
Need qcn backup from Mi8. you will need to be rooted.
How to create one?
https://forum.xda-developers.com/redmi-note-3/how-to/guide-qpst-tool-backup-imei-nvram-t3455297
Current Status as of 26th October 2018.
Can't read NV items for LTE
https://forum.xda-developers.com/showpost.php?p=77641511&postcount=59
If anyone has ideas let us know.
Current Status as of 18th October 2018.
We have backups of modem and fsg from Mi Mix 2S.
https://forum.xda-developers.com/showpost.php?p=77902835&postcount=166
When I try to open fsg backup in a hexeditor I dont get anything useful. So need help with figuring that out.
If anyone has any other ideas on how to unlock the bands (other than QPST) please post here.
RT's are appreciated
https://twitter.com/munchy_cool/status/1046028765892087808
Current Status as of 24th September 2018.
We need modem and efs partitions backup from Mi 8 and Mi Mix 2S.
Current Status as of 17th September 2018.
3G and LTE bands are not stored/referenced at 6828 and 6829 in NV browser. Thanks to @Heronicola for checking. We need to find out where these bands are. so if anyone has an idea, feel free to comment in the thread.
https://forum.xda-developers.com/showpost.php?p=77641511&postcount=59
Original Post
The Pocophone F1 LTE bands are listed as
1(2100), 3(1800), 5(850), 7(2600), 8(900), 20(800), 38(2600), 40(2300), 41(2500)
However, it is supposed to launched in Mexico and Colombia as well.
Mexico LTE Bands - 2 & 4.
Colombia LTE Bands - 4 & 7
Band 2 and 4 will be very helpful for us US peeps.
Not sure how Xiaomi locks the bands, do they use software? in which QPST should be able to unlock the bands.
or
They lock them via hardware, in which case Poco F1 will have a different model from Mexico and Colombia (and other countries which use Band 2 and Band 4?
QPST
https://forum.xda-developers.com/redmi-note/general/unlock-lte-bands-step-step-xiaomi-mi-t3084774
If anyone with a bootloader unlocked and rooted Poco F1 is willing to try QPST and see if the bands can be enabled please post here.
Thanks.

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Also following for the answer. Bands 2 and 4 would make it quite viable for T-Mobile service in the US.

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Phone has indeed been announced for Colombia (where LTE band 4 is used) and it's already going through Colombia's own certification authority. I would assume that we might be facing a similar situation as with Mi A1 in that the manual said it didn't support LTE band 4 (check the post I just linked to) but on first setup if you chose "Español (Mexico)" as the language, it would enable LTE band 4.

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its sad that this phone with the flagship qualcomm sd845 should handle universal lte bands, but somehow in xiaomi phones specially the LTE bands are pretty limited, for example here we use band 28 (700 mhz) and there are no support for that

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sagematt said:
Phone has indeed been announced for Colombia (where LTE band 4 is used) and it's already going through Colombia's own certification authority. I would assume that we might be facing a similar situation as with Mi A1 in that the manual said it didn't support LTE band 4 (check the post I just linked to) but on first setup if you chose "Español (Mexico)" as the language, it would enable LTE band 4.
Click to expand...
Click to collapse
Hadn't heard about this, with the Mi A1. Very nice fudge, this. If the F1 can be wangled to use band 4 it will be a shot in the arm for north American interest and development

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sagematt said:
Phone has indeed been announced for Colombia (where LTE band 4 is used) and it's already going through Colombia's own certification authority. I would assume that we might be facing a similar situation as with Mi A1 in that the manual said it didn't support LTE band 4 (check the post I just linked to) but on first setup if you chose "Español (Mexico)" as the language, it would enable LTE band 4.
Click to expand...
Click to collapse
which means that the band might be disabled via software and we should be able to enable it via QPST.

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munchy_cool said:
The Pocophone F1 LTE bands are listed as
1(2100), 3(1800), 5(850), 7(2600), 8(900), 20(800), 38(2600), 40(2300), 41(2500)
However, it is supposed to launched in Mexico and Colombia as well. Now, Mexico and Colombia have LTE on Band 2 and Band 4. Band 2 and 4 will be very helpful for us US peeps.
Not sure how Xiaomi locks the bands, do they use software? in which QPST should be able to unlock the bands.
or
They lock them via hardware, in which case Poco F1 will have a different model from Mexico and Colombia (and other countries which use Band 2 and Band 4?
QPST
https://forum.xda-developers.com/le-pro3/help/unlocking-bands-t3565979
If anyone with a bootloader unlocked and rooted Poco F1 is willing to try QPST and see if the bands can be enabled please post here.
Thanks.
Click to expand...
Click to collapse
thanks to the community it might be possible
https://forum.xda-developers.com/galaxy-s5/general/how-to-add-rf-lte-frequency-bands-to-t2886059
but it sounds a bit complicated.
ps: interested how anybody got around the bootloader (1440 hours) unlock timer.

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munchy_cool said:
Now, Mexico and Colombia have LTE on Band 2 7 and Band 4 (at least in Colombia) . Band 2 and 4 will be very helpful for us US peeps.
Click to expand...
Click to collapse
Fixed
As a Colombian citizen, i hope this situation will be as clear as water pretty soon

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SebastIAS said:
Fixed
As a Colombian citizen, i hope this situation will be as clear as water pretty soon
Click to expand...
Click to collapse
I read on reddit somewhere that Xiaomi has a history of not reporting ALL the bands that their phone can support due to rights issues or something like that. Not sure if this is true.

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SebastIAS said:
Fixed
As a Colombian citizen, i hope this situation will be as clear as water pretty soon
Click to expand...
Click to collapse
Thanks for correcting me. I was goin going of information I found on the internet.

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At the moment isnt present b4 for lte
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chemicalboyxda said:
At the moment isnt present b4 for lteView attachment 4588565
Click to expand...
Click to collapse
like i said in the first post.
need to root and see if other bands can be enabled

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Has anyone given this a shot? Would be interesting to see.

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chemicalboyxda said:
At the moment isnt present b4 for lteView attachment 4588565
Click to expand...
Click to collapse
Change The región to Colombia or México. And try again.
Just like mi A1.

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It'd be great if someone could try band 12. The lack of that band is a deal-breaker for T-Mobile in the US on my Mi A1.
Nobody has been able to enable band 12 on phones that don't officially ship with it. This has been the case on the OnePlus One, Mi A1, Mi A2, and more. You can "enable" it in QPST, but it doesn't work.

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So, this phone is a no-go for AT&T LTE in the US? Might have to return it if it only supports band 5... shame, I really like the idea of it! Maybe there's a way to enable more bands, but from the other poster, it doesn't really look like it.

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whats odd is they disable face ir for other regions

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thebigcw said:
So, this phone is a no-go for AT&T LTE in the US? Might have to return it if it only supports band 5... shame, I really like the idea of it! Maybe there's a way to enable more bands, but from the other poster, it doesn't really look like it.
Click to expand...
Click to collapse
someone has to try enabling bands 2 & 4 using QPST. The way is mentioned in OP. Unless someone tries, we cannot be sure that you cant enable them.

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chico84cam said:
Change The región to Colombia or México. And try again.
Just like mi A1.
Click to expand...
Click to collapse
The same... Maybe in the future xiaomi enable this bands with an update or ship another version for latin american countries

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chemicalboyxda said:
The same... Maybe in the future xiaomi enable this bands with an update or ship another version for latin american countries
Click to expand...
Click to collapse
which app is that buddy?