[Nexus 6  General] Azlun:
As I brought Band3 for NEXUS5, here, we are bringing 4G LTE band1 IMT 2100MHz for users such as, but

not limited to:

China Telecom,

Japan AU/NTT Docomo/Softbank,

Korea LG U+ /SK Telecom,

Philippines Smart,

Thailand DTAC/TrueMove-H

according http://en.wikipedia.org/wiki/List_of_LTE_networks#Asia and more:

Czech Republic Vodafone

Poland Play/P4

according http://en.wikipedia.org/wiki/List_of_LTE_networks#Europe

20150412 UPDATE: we are in Trial of more bands,as attachment names at POST#33:

Band 2 and band 4 for XT1100 View attachment 3257101

and Band 1 and band 8 or Band 1/9/19 or Band 1/8/9/19 for XT1103 View attachment 3257100

I am sorry below English language is not good, it is come from Google Translation^_^ from my Chinese post.

attachment docx is more clear since more detail images can are attched inside:

EN:View attachment 3187257

CN:View attachment 3187214

NEXUS 6 US MOTO XT1103 Band1 Enablement Tutorials

Foreword:

With the US version NEXUS6 XT1103 Chinese users, most of them come for China Telecom

, but is there such a telecommunications in many indoor shopping centers and car parks, do 4G LTE band1 2100MHz coverage, but also greater bandwidth than band3 15MHz with 20MHz bandwidth with China Telecom license.

What is a pity, XT1103 band1 RF front-end is shipped out without factory calibration, so only official usage is 15MHz@band3 only for China Telecom.In fact, as NEXUS5 band3 enablement, NEXUS6 RF front-end hardware also left a tiny space to enable it. The following tutorial is the first edition, With more extensive testing,It will needs correction on your demands.

I am sorry I do not have English version computer to reworks the Chinese screen captures,

I believe you have some way to understand around.​

STEP1: using TWRP backup EFS

you can nexus6 of TWRP-Backup-EFS. More insurance after the phone Root, you canalso EFS Professional to backup your original EFS.

Thus, When need to restore the original state , Just use TWRP-Restore- to select the original EFS and slide the button to restore any changed below.
​

STEP2: Install the driver Moto BP Tools Driver

Mobile side: the phone off, then press the power button + volume down key, enter fastboot mode, use the volume keys to select BP Tools, and then turn the power button to confirm. Open usb diag device port.

View attachment 3187284View attachment 3187207 View attachment 3187208

1. Connect your phone to your computer, then prompted to install "diag_mdm" drive (or right-click "My Computer" and select "Properties" - "Device Manager" to install "diag_mdm" drive)

2. Right-click on the "diag_mdm", select "Update Driver Software" and then select "Browse my computer for driver software."

3. Select "choose from a list of device drivers in your computer."

4. Select "Show all devices", the "Next" button.

5. select "Disk"

6. Click "Browse"

7. Select the folder where you drive, point to open after selecting "momdm", then OK.

8. Select the "Motorola USB Diagnostic Port", click "Next."

9, warning, Click "Yes"

10, in the Device Manager port as shown below to show that the installation was successful (Note: The port number com93 vary)

View attachment 3187285
​

STEP3: Write qcn

Phone side: the phone off, then press the power button + volume button, enter fastboot mode, use the volume keys to select BP Tools, and then turn the power button to confirm, so you can open the usb diag device port.

1.the installation QPST. Do not use lower version 2.7 build 422, otherwise it will not recognize the device. please find such installation by yourself.

2. open QPST configuration, the first point of Ports tab, select the device displayed, the first point below "remove", Prompt window popuped, and then point "Yes".

3, Chick "Add New Port".

4. Select the port of your device com port, and then "OK" button.

5, open the folder points QPST Software Download, click on "Restore" tab, click Browse to select the desired brush into qcn file:

View attachment 3187209

(Here, the only difference vs nexus5 enabled band3 ,XT1103 purchased from Google Play, MOTO did not change default SPC, 000000),

Check Allow phone / file ESN mismatch, the final blow: Point Start, Errors box appears Could not Reset the Phone error normal, qcn has finished writing, after using the Power button off, then boot directly out LTE signal, the restart, do not use QuickBoot like Reboot, to ensure safety.

View attachment 3187286View attachment 3187287
​

FINALLY: Check Whether Band1 Enablement successful methods

Method 1: Insert China telecom USIM cards, confirming a place where band1 with LTE Cell ID can be found with the end of HEX is 00,01,02,03,04,05 of LTE base stations (in the dial-up interface, enter * # * # 4636 # * # *, open "mobile phone information ", the" Set preferred network type "to LET ONLY, and then find the" Location: LAC = 7101 CID = 1924c01 "in this column, the CELL ID is inside this CID.

View attachment 3187288

Method 2: Use the LTE Discovery watch band states.

NOTE: These two methods are there GCI (CID) guessing band, is only applicable to some of operators such as China Telecom, the absence of good planning China Unicom 4G CellID, and also China Mobile is not applicable for this .

NOW@201504， we have LTE Discovery update to 3.19， support NEXUS6 display the real MODEM LTE Band!! thanks for Danial and his great team!!

View attachment 3187289 View attachment 3299400 View attachment 3299398 View attachment 3299399
​

While you want to Check real band PC tool QXDM may help if you have such tool, menu path is View-LTE- RRC layer-RRC/NAS Status Screen- Frequency band, wait for 10mintues for update or use airplane mode on/off to Tigger update.

In case you are not in LTE covered area, but just want to check the qcn is applied or not, reset your phone in boot loader mode, select BP TOOLS again,them use QXDM-view-NV Browser-Item 06828- read to get the value, it should be 1099830466655 for add band1 while stock default is 1099830466654,

Other qcn XT1103 add:

B1/8 1099830466783

B1/9/19 1099830729055

B1/8/9/19 1099830729183

XT1100 add:

B2/4 1099646632415, [MENTION=278631]default[/MENTION] 1099646632405

Here we must thank:

Q39705630 enthusiastic and efficient testing and Draft this tutorial V0.1 version;

Q562552826 provide XT1103 of qcn file, doing preliminary analysis;

Q386499038 provide XT1100 qcn file, do the final release qcn file parameter reference;​

Other Reference Tutorial IN Chinese:

1. CN version band1 enablement:

http://bbs.gfan.com/android-7863761-1-1.html

2.NEXUS6 RF parameters such as PC-side backup method qcn

http://bbs.gfan.com/android-7741730-1-1.html

3. Some tools on LTE band1 signal monitoring

http://bbs.gfan.com/android-7684876-1-1.html​