[GUIDE][PARTIAL] Unlock Additional LTE bands on Chinese & US variants of OnePlus 3

[DGMHZ]

Of course you can unlock B3 on NorthAmerican OP3 but this patch isn't enough for it. I can upload QCN's i use for B3/B8 and CA combinations.

Search the topic and collect more info please.

Can you provide specific help? nvbk just unlocked b3? Can it unlock other frequency bands? As far as I know, nvbk is to prevent OP5 from restoring, so I have to swipe multiple qcns to have the frequency bands I need. It may not make sense now

 

[DGMHZ]

Hey guys, my OP3 doesn't need to refresh QCN. B5 and b8 are enabled!!! This is a pleasant surprise. Although it is not very useful, first I enable volte in OP3 oxygen os 9.0.3, we enable OEM_Test_Card-Lab, and it will write it into the EFS carrier_policy.xml file. By default, QCN does not have a carrier_policy.xml file! ! Then perform the following operations
1. Brush into nvbk qxdm 1878 and write 237 in your country!
2, qxdm 06828 writes to OP3T's 2061584302293
3. Modify carrier_policy.xml, in which Oxygen os8.0 5.0.2 does not know if it is accidental that carrier_policy.xml has a piece of such code? ?
<!-- Define a HOME RF band list that include GW and LTE bands -->
<!-- Add lte B5 for CT, 20160805-->
What is the operation of OnePlus? ?
4. We add a piece of code to carrier_policy.xml and I will provide it in the following txt file
5.Interpret the carrier_policy.xml string, 0 means b1, 2 means b3, 4 means b5,
https://kn007.net/topics/oneplus-3t-oxygen-os-enable-china-telecom-volte/
and soOpen Volte Chinese translation on.

[CODE
<!-- Define the 1x_oos timer with a 1 minute interval -->
<define_timer name = "1x_oos" interval = "1" units = "min" id = "100" />

<!-- Define a HOME RF band list that include GW and LTE bands -->
<!-- Add lte B5 for CT, 20160805-->
<rf_band_list name="rf_bands_home">
<gw_bands base = "hardware" />
<lte_bands base = "none">
<include> 0 2 4 7 25 37 38 39 40 </include>
</lte_bands>
<tds_bands base = "none" />
</rf_band_list>

<rf_band_list name="test_sim_all_rf_band">
<gw_bands base="hardware" />
<lte_bands base="hardware" />
<tds_bands base="hardware" />
</rf_band_list>

<!-- Define initial RAT capability as CHL -->
<rat_capability_if base="none" >
<include> CDMA HDR LTE </include>
</rat_capability_if>

 

[DGMHZ]

。

 

[DGMHZ]

The aggregation parameters of Ca are determined by the carrier_ In the policy.xml file, the merge file has all the functions. For details, please refer to oneplus3 MBN file

 

[DGMHZ]

Hey guys, OP3 obviously doesn't make sense! My method still needs to brush into qcn, although I have 5 and 8, but the equipment is very hot! Serious impact on original 1 and 3! So I gave up restoring the original qcn to ensure the normal operation of the equipment!

 

[borisSweden]

Hey guys, OP3 obviously doesn't make sense! My method still needs to brush into qcn, although I have 5 and 8, but the equipment is very hot! Serious impact on original 1 and 3! So I gave up restoring the original qcn to ensure the normal operation of the equipment!

Check this guys tutorials. https://mt-tech.fi/en/

I have no idea how it works.

 

[borisSweden]

Why can't we use other phones qcn to activate B28A/B? There are many phones with the same modem and SoC. Heck even the Nexus 5X has support while using the bad 808 chip.

 

[borisSweden]

Unlock LTE bands and unlock LTE CA are different things.
You need unlock B3, before unlock LTE CA.
@mnsiw I don't have 1+3T, you can follow OP guide to unlock B3.

I know you dont own the phone anymore but is this tutorial possible for the OP3T?

Enable B28 (700Mhz) Band on Nexus 5X-phone - MT-TECH.FI

LG or Google has enabled B28 only few region. We checking configuration and figure out to enable this easily example in Finland. Normally B28 is enabled only there region and networks: Australia: Telstra, Optus New Zealand: Spark Taiwan: FastEasTone Argentina: Movistar, Claro Panama: CW Panama...

mt-tech.fi

 

[DGMHZ]

Why can't we use other phones qcn to activate B28A/B? There are many phones with the same modem and SoC. Heck even the Nexus 5X has support while using the bad 808 chip.

Oppo and oneplus, which manufacturer do you think is more willing to invest in cost? Obviously, I know better in oppo's hometown that the RF chip does not support the frequency band, forcing the baseband to unlock meaningless and greater heating

 

[DGMHZ]

Check this guys tutorials. https://mt-tech.fi/en/

I have no idea how it works.

Msm8996 is too hot. We have abandoned OP3 and replaced it with a better device 5g. It is more meaningful to toss the kernel

 

[borisSweden]

Oppo and oneplus, which manufacturer do you think is more willing to invest in cost? Obviously, I know better in oppo's hometown that the RF chip does not support the frequency band, forcing the baseband to unlock meaningless and greater heating

I'm not saying all models should get it. Only the European model could get it. There is a ton of SD821 phones with B28.

 

[borisSweden]

Msm8996 is too hot. We have abandoned OP3 and replaced it with a better device 5g. It is more meaningful to toss the kernel

There is the EVS tutorial for increasing VoLTE sound quality. The issue is that users get late to ask the right question to the Vendor, OEM and custom devs. Well I learned from my mistakes and pick a new phone more carefully.

 

[otonieru]

There is the EVS tutorial for increasing VoLTE sound quality. The issue is that users get late to ask the right question to the Vendor, OEM and custom devs. Well I learned from my mistakes and pick a new phone more carefully.

Exactly,

i stop buying phone which nitpick the 4G or 5G band frequency in their radio.

so, Samsung for better connectivity, and Xiaomi for other purposes (mods, cam, etc)

Oneplus phone simply no longer worth it in my country, because it only available through importer and black market. One plus 10 will cost me more than S22 ultra here.

 

[borisSweden]

Exactly,

i stop buying phone which nitpick the 4G or 5G band frequency in their radio.

so, Samsung for better connectivity, and Xiaomi for other purposes (mods, cam, etc)

Oneplus phone simply no longer worth it in my country, because it only available through importer and black market. One plus 10 will cost me more than S22 ultra here.

I bought a used 7T because the 8,9 and 10 where expensive and I knew what kind of tech stack I wanted.5G is over hyped and I see no improvement in GNSS, Bluetooth, WiFi, USB, 4G. Well the most important part is unlockable bootloaders without BS and Oneplus offers it.

 

[SikaIota]

Hey guys, OP3 obviously doesn't make sense! My method still needs to brush into qcn, although I have 5 and 8, but the equipment is very hot! Serious impact on original 1 and 3! So I gave up restoring the original qcn to ensure the normal operation of the equipment!

Hello! I am new to the thread, and seems that all google drive links in the thread are denying access to anyone who has not accessed it before, as of google drive's updated security measurements. Can you kindly share the fbrx qcn files for OP3? ("4. Extra QCN for fbrx_cal" in #1) My email is [email protected]. Thank you very much!

 

[DGMHZ]

I bought a used 7T because the 8,9 and 10 where expensive and I knew what kind of tech stack I wanted.5G is over hyped and I see no improvement in GNSS, Bluetooth, WiFi, USB, 4G. Well the most important part is unlockable bootloaders without BS and Oneplus offers it.

However, Xiaomi has done a good job in system and hardware. Oneplus is a subsidiary of oppo, which is expensive and difficult to use. The system really can't be used here. It's better to let lineage OS do it. There are too many bugs and many defects in hardware design, which software can't make up

 

[DGMHZ]

Exactly,

i stop buying phone which nitpick the 4G or 5G band frequency in their radio.

so, Samsung for better connectivity, and Xiaomi for other purposes (mods, cam, etc)

Oneplus phone simply no longer worth it in my country, because it only available through importer and black market. One plus 10 will cost me more than S22 ultra here.

In the 5g era, the frequency band has lost its meaning. I don't need to consider these issues. There are 16 frequency bands here. The sa/nas Huawei signal is the best, the MTK baseband is the strongest, and Qualcomm has no rivals. I still choose oppo vivo Samsung Xiaomi for equipment. They are better in system and hardware optimization, and won't stick to its original intention like oneplus. It's a wise choice to give up this brand

 

[DGMHZ]

Hello! I am new to the thread, and seems that all google drive links in the thread are denying access to anyone who has not accessed it before, as of google drive's updated security measurements. Can you kindly share the fbrx qcn files for OP3? ("4. Extra QCN for fbrx_cal" in #1) My email is [email protected]. Thank you very much!

You have to make good use of search Bing or Google to find op3/op3t qcn, then use Qualcomm qdart to extract the frequency band you want, and finally use tools to merge qcn, or qpst to brush in separately. Other threads have tutorials. My data has been cleared, and I am too disappointed with OP3

 

[borisSweden]

However, Xiaomi has done a good job in system and hardware. Oneplus is a subsidiary of oppo, which is expensive and difficult to use. The system really can't be used here. It's better to let lineage OS do it. There are too many bugs and many defects in hardware design, which software can't make up

Reason why I didn't pick Xiaomi is the MiUnlock wanting your phonenumber and email. They also do this in obsolete models that doesn't get any support. So its a privacy nightmare. Now you will say its Android Meta data city but I immediately flashed a custom ROM and MicroG.

 

[borisSweden]

In the 5g era, the frequency band has lost its meaning. I don't need to consider these issues. There are 16 frequency bands here. The sa/nas Huawei signal is the best, the MTK baseband is the strongest, and Qualcomm has no rivals. I still choose oppo vivo Samsung Xiaomi for equipment. They are better in system and hardware optimization, and won't stick to its original intention like oneplus. It's a wise choice to give up this brand

I don't think they will try to milk money with 5G like they did with 4G. 5G isn't even hot for many. If OEM, vendors, carriers and chipmakera pick a open standard, we are heading towards the right direction. Untiol that happens, I will wait for VoNR hacks that actually work, I should have waited for the OP5.