modem hack for Chinese OPO to enable 3G

Search This thread

dhaub

Member
Jul 25, 2012
46
11
0
I thought I might post this in its own thread as it might save people time when they get their Chinese OPOs and notice WCDMA doesn't work..

For all those who don't know, the Chinese OPO does not support WCDMA/FDDLTE in its stock software configuration. You need to swap out the modem to a hacked modem in order to get the feature to work.

I believe the modem attached was pulled from a Find 7, I've tested it, it works. It has been running pretty well for the last week or so but I'll have to test it over the coming weeks to see how reliable it is. They claim 2G/3G but no 4G. 3G/2G works.

hacked modem

http://pan.baidu.com/s/1bnAeztt (run through google translate)

For further info (google translate required) :

http://www.oneplusbbs.com/thread-304186-1-1.html
 

Uludag

Member
May 19, 2014
38
6
38
so your saying that the chinese and world versions of the opo are the same hardware wise and its just a software modem difference?
 

Syke21

Senior Member
Apr 9, 2012
56
26
0
So for three in the UK the Chinese opo might not work at it's best?

Edit: did some research for myself and it will work fine.
 
Last edited:

soul_ride

New member
Jan 30, 2011
2
1
0
As I saw in one of threads on OPO forums it was explained that chinese version do not support only WCDMA band 4.

According to the wiki (UMTS_frequency_bands) this band is used only by following operators:
North America: USA(T-Mobile US, Cincinnati Bell, i wireless), Canada (Eastlink, Mobilicity, Vidéotron, Wind Mobile)
Latin America: Chile(VTR, Nextel), Colombia(TIGO, Movistar), Uruguay(Ancel), Perú(Movistar, Nextel)
 
  • Like
Reactions: cipherbreak

djfoo000

Senior Member
Jan 26, 2010
274
30
0
Has anyone tried to flash the CM11S factory image and see if that radio activated the bands? The CM11S factory image includes radio images, and I believe is flashed together as a whole.
 

sasalove

Member
Jun 4, 2014
19
7
0
All-

This is the hacked modem for China OPO that supports China Unicom networks.

I have made cwm zip for easiler install as CM would override the modem during OTA upgrades.

This modem comes from the chinese oneplus forum. See link: http://www.oneplusbbs.com/thread-429139-1-1.html

Code:
http://speedy.sh/ddWNw/OPOHackedModem.zip

I have tried other networks with the modem from the ColorOS or CM rom, seems there is no restriction on WCDMA for other networks.
 
Last edited:

dhaub

Member
Jul 25, 2012
46
11
0
All-

This is the hacked modem for China OPO that supports China Unicom networks.

I have made cwm zip for easiler install as CM would override the modem during OTA upgrades.

This modem comes from the chinese oneplus forum. See link: http://www.oneplusbbs.com/thread-429139-1-1.html

Code:
http://speedy.sh/ddWNw/OPOHackedModem.zip

I have tried other networks with the modem from the ColorOS or CM rom, seems there is no restriction on WCDMA for other networks.

A few things,..

1. I've been lead to believe from various sources that the Intl. and Chinese versions of the OPO are in fact almost identical hardware wise.

see: http://www.gizchina.com/2014/06/12/differences-international-chinese-oneplus-one/

2. I don't have a 4G subscription in China so I cannot confirm whether or not it works with this modem hack.

3. I bought my Chinese OPO from a reseller here in China on Taobao. When I received it I immediately flashed it over to CM11s and subsequently had no 3g (I use WCDMA network China Unicom FYI) for a few days until I found the hacked modem on the Chinese OPO forums. As for those of you who are not in China, I've heard that many Int. resellers will complete this process for you so you won't need to do any flashing yourself, but I can't generalise for all of the sellers out there.

4. I cannot confirm is whether or not this is only some kind of restriction for Chinese wcdma networks (China unicom). I haven't as yet taken my OPO out of this country and tried an international sim card so that is yet to be determined.

ThExSenatoR> I'm curious about your phone configuration perhaps you could post which modem version you use printed from the about screen??

sasalove> are you saying that the Chinese OPO will work outside of China on other wcdma networks but will not work inside China on China Unicom with the stock modems from coloros and CM?

can anybody who uses China unicom on 4g confirm which modem you use and if you also had to flash a different modem in order to access the service?
 

sasalove

Member
Jun 4, 2014
19
7
0
With some testing, I'm quite confident to conclude the restriction for 3G is on China Unicom only. I got my CMHK and one2free sim to confirm it. I can use 3G and 4G without issue in HK.

I occasionally travel to mainland and I got both China Mobile and China Unicom 3G sim. Only the hacked modem got China Unicom 3G and meanwhile the CM modem cannot connect to the TD-SCDMA for China Mobile.

I'm still waiting for my 4G China Mobile to test TD-LTE...

So in any case, I decide to flash this hacked modem, as it seem to work for all to date... :mad:

---------- Post added at 01:56 PM ---------- Previous post was at 01:38 PM ----------

If anyone got some time to test out the difference in modem versions as well as for rolling back, here you go!

Code:
http://speedy.sh/3DuFz/CMModem.zip
Code:
http://speedy.sh/DvQpu/ColorOSModem.zip
Code:
http://speedy.sh/ddWNw/OPOHackedModem.zip
 
  • Like
Reactions: okfahmy

sasalove

Member
Jun 4, 2014
19
7
0
Will this work on Verizon? CDMA bands 4 and 13, 3g.
Thanks!

The modem that come with CM11 should have WCDMA band 4 (1700 MHz) and should also have LTE band 4 (1700 MHz) and band 17 (700b MHz). According to the spec, the difference is supporting TD-SCDMA band 34 (2010-2025 MHz) / TD-LTE for band 39 (1900 MHz) for China. Other than that the spec matches both side.

Therefore, if anyone need band 4 and band 17, they should use the modem that come with CM11 which lack in the Chinese modems.

Connectivity [CM]
GSM: 850, 900, 1800, 1900MHz
WCDMA: Bands: 1/2/4/5/8
LTE: Bands: 1/3/4/7/17/38/40

Connectivity [ColorOS]
GSM:850 / 900 / 1800 / 1900
TD-SCDMA:1880-1920 (39) / 2010-2025 (34)
WCDMA*:2100 (1) / 1900 (2) / 850 (5) / 900 (8)
TD-LTE:2570-2620 (38) / 1880-1920 (39) / 2300-2400 (40)
FDD-LTE*:2100 (1) / 1800 (3) / 2600 (7)
 
Last edited:
  • Like
Reactions: yosef_a

dhaub

Member
Jul 25, 2012
46
11
0
With some testing, I'm quite confident to conclude the restriction for 3G is on China Unicom only. I got my CMHK and one2free sim to confirm it. I can use 3G and 4G without issue in HK.

I occasionally travel to mainland and I got both China Mobile and China Unicom 3G sim. Only the hacked modem got China Unicom 3G and meanwhile the CM modem cannot connect to the TD-SCDMA for China Mobile.

I'm still waiting for my 4G China Mobile to test TD-LTE...

So in any case, I decide to flash this hacked modem, as it seem to work for all to date... :mad:

---------- Post added at 01:56 PM ---------- Previous post was at 01:38 PM ----------

If anyone got some time to test out the difference in modem versions as well as for rolling back, here you go!

Code:
http://speedy.sh/3DuFz/CMModem.zip
Code:
http://speedy.sh/DvQpu/ColorOSModem.zip
Code:
http://speedy.sh/ddWNw/OPOHackedModem.zip


Thanks mate for clearing that up for me! So it seems that this restriction is only for China Unicom, why might that be I wonder? to my knowledge, It's not like the Chinese OPO's are being sold by China mobile directly...

I'd still like to test out 4G for China Unicom but I would like to find a cheap deal to do it. I can never seem to fully understand the mobile plans in China anybody got any suggestions as to how I might find a plan with a decent amount of data (at least 300mb) for less than 100yuan a month :D ??
 

joquio

Member
Jan 18, 2009
26
1
0
Burnaby, BC
The modem that come with CM11 should have WCDMA band 4 (1700 MHz) and should also have LTE band 4 (1700 MHz) and band 17 (700b MHz). According to the spec, the difference is supporting TD-SCDMA band 34 (2010-2025 MHz) / TD-LTE for band 39 (1900 MHz) for China. Other than that the spec matches both side.

Therefore, if anyone need band 4 and band 17, they should use the modem that come with CM11 which lack in the Chinese modems.

Connectivity [CM]
GSM: 850, 900, 1800, 1900MHz
WCDMA: Bands: 1/2/4/5/8
LTE: Bands: 1/3/4/7/17/38/40

Connectivity [ColorOS]
GSM:850 / 900 / 1800 / 1900
TD-SCDMA:1880-1920 (39) / 2010-2025 (34)
WCDMA*:2100 (1) / 1900 (2) / 850 (5) / 900 (8)
TD-LTE:2570-2620 (38) / 1880-1920 (39) / 2300-2400 (40)
FDD-LTE*:2100 (1) / 1800 (3) / 2600 (7)


Are we certain that the Chinese OPO has the EXACT SAME hardware as the international OPO sold by One plus?

I remember reading people claiming either side.

Just want to make sure that they indeed have the exact same hardware ie. Radio/modem and just need to have different ROM/modem firmware flashed to enable different bands ie. Band 4 (1700) in my case.
 

natesiy

Member
Aug 12, 2003
43
2
0
Vancouver
www.sounddomain.com
A few things,..

1. I've been lead to believe from various sources that the Intl. and Chinese versions of the OPO are in fact almost identical hardware wise.

see: http://www.gizchina.com/2014/06/12/differences-international-chinese-oneplus-one/

2. I don't have a 4G subscription in China so I cannot confirm whether or not it works with this modem hack.

3. I bought my Chinese OPO from a reseller here in China on Taobao. When I received it I immediately flashed it over to CM11s and subsequently had no 3g (I use WCDMA network China Unicom FYI) for a few days until I found the hacked modem on the Chinese OPO forums. As for those of you who are not in China, I've heard that many Int. resellers will complete this process for you so you won't need to do any flashing yourself, but I can't generalise for all of the sellers out there.

4. I cannot confirm is whether or not this is only some kind of restriction for Chinese wcdma networks (China unicom). I haven't as yet taken my OPO out of this country and tried an international sim card so that is yet to be determined.

ThExSenatoR> I'm curious about your phone configuration perhaps you could post which modem version you use printed from the about screen??

sasalove> are you saying that the Chinese OPO will work outside of China on other wcdma networks but will not work inside China on China Unicom with the stock modems from coloros and CM?

can anybody who uses China unicom on 4g confirm which modem you use and if you also had to flash a different modem in order to access the service?

I can confirm China Unicom 4g is working with the hacked modem.
 

dhaub

Member
Jul 25, 2012
46
11
0
There is a newer hacked modem available. The author states the modem is based on CM12S while supporting all 3G/4G in China. Another user claims to test all of the network modes.

Original Link: http://www.oneplusbbs.com/thread-392257-1-3.html
User confirming all network modes: http://www.miui.com/thread-1832939-1-1.html

Code:
http://speedy.sh/vnvZQ/CMHackModem.zip

:good:

Cheers mate! On another note, can anyone confirm what their wifi/cellular peformance is like with either the original or hacked modems? Since I've pretty much only used the hacked modem (the one I posted at the start of the thread), I can add that performance wise, it's significantly worse than my computer and old iPhone 5 when using the wifi from my bedroom. Where I sit in my bedroom I get consistent full reception on my computer and used to get the same on my iPhone 5, on my OPO I get 1 or 2 bars at most irrespective of whether or not I use 2.4ghz or 5ghz...

Anyone else experience similar?
 

Top Liked Posts

  • There are no posts matching your filters.
  • 3
    I thought I might post this in its own thread as it might save people time when they get their Chinese OPOs and notice WCDMA doesn't work..

    For all those who don't know, the Chinese OPO does not support WCDMA/FDDLTE in its stock software configuration. You need to swap out the modem to a hacked modem in order to get the feature to work.

    I believe the modem attached was pulled from a Find 7, I've tested it, it works. It has been running pretty well for the last week or so but I'll have to test it over the coming weeks to see how reliable it is. They claim 2G/3G but no 4G. 3G/2G works.

    hacked modem

    http://pan.baidu.com/s/1bnAeztt (run through google translate)

    For further info (google translate required) :

    http://www.oneplusbbs.com/thread-304186-1-1.html
    3
    Thanks for the info!

    I have chinese OPO using on T-Mobile in Hungary. 2G/3G/4G are working out of the box, just for you information.
    2
    So, my phone frequencies match my carrier Frequencies and everything looked good but still for some reason it only worked on 2g.
    Even if I went to mobile networks and chose 3g or 4g it still only connected with 2g.

    Instead of flashing a new modem (which was my next step if I failed, I didn't) I entered the technician menu (surprised no one tried that) *#*#4636#*#*, went to phone information, and selected wcdma preferred. I then rebooted my phone and everything worked ever since.

    Hope it will help other people as well.

    Sent from my One using XDA Free mobile app
    2
    All-

    This is the hacked modem for China OPO that supports China Unicom networks.

    I have made cwm zip for easiler install as CM would override the modem during OTA upgrades.

    This modem comes from the chinese oneplus forum. See link: http://www.oneplusbbs.com/thread-429139-1-1.html

    Code:
    http://speedy.sh/ddWNw/OPOHackedModem.zip

    I have tried other networks with the modem from the ColorOS or CM rom, seems there is no restriction on WCDMA for other networks.
    2
    to confirm for myself and others outside of China. if we are to flash cm11s official over color os, we do not need to flash this modem to enable the 3g/4g bands. right?

    According to what sasalove and others have said, it seems that flashing a hacked modem is unnecessary for those of you who live outside of China. Perhaps a moderator could rename this thread to 'WCDMA for Chinese OPO on Chinese networks'.
Our Apps
Get our official app!
The best way to access XDA on your phone
Nav Gestures
Add swipe gestures to any Android
One Handed Mode
Eases uses one hand with your phone