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Jiayu G2 - Dual SIM, 1GHz CPU, 1GB RAM, 4.0-inch IPS screen, ICS

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toffzter

Senior Member
Apr 18, 2012
104
5
Have you tried rooting the phone? How long did it ship to your place? Did you pay by western union? If yes, how much did you pay in all? Thanks kabayan!
Hi Enigmaximus! I have not tried rooting the phone yet. Maybe later but I'm already satisfied with it and I'm worried that it will get bricked. I paid through Western Union. I think the handling fee for Western Union is around P700. The phone costs only $162 now from where I bought it. Plus it has a 3% discount if you pay by Western Union. I chose EMS as shipping option and it arrived in less than 2 weeks. I think I paid around P8300 all in all for the phone and shipping. Check this site for more info: http://www.chinaphonereview.com/jiayu-g2. It is a great phone. I have no regrets buying it.
 
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webdoctors

Senior Member
Nov 29, 2011
65
22
I'm considering buying the Jiayu G3 as it has a bigger screen and 720 HD resolution (only phone I believe on the market with such a high resolution), as well as dual-core. It also looks amazing.

With the G2, were there any issues with accessing the Google Play Marketplace? That's my only real concern. Rooting this phone should be as easy as the Zopo ZP100 , most of these devices don't put any real hard restrictions on rooting since they're not controlled by the telecom cartels.

Although if you want a safe bet cheap 4 inch phone that's name brand, the Lenovo A789 is cheaper and dual core.
 

orangdayak

Senior Member
Oct 22, 2006
176
2
For those who cannot get 3G, make sure u insert the sim card at the correct slot. There two slots, one only work with GSM, while the other one WCDMA.
 

Mattix724

Senior Member
Sep 26, 2010
4,321
2,525
Phoenix, Arizona
OnePlus 8
Not trying to be a negative Nancy but I would not use a knock off no name Chinese phone to run any kind of business app.

You never know what's embedded in the system that could be stealing your information without you knowing about it. We Americans owe China so much money they are looking at ways to destroy us from the inside.

I really hope you're not running any kind of credit cards, names, phone numbers, social security numbers, etc with whatever business app you are using.

Sent from my piece of crap Zio until i get my E4GT back from Samsung, using XDA Premium app
 

alibasbas

Member
Apr 11, 2011
20
1
Hi Enigmaximus! I have not tried rooting the phone yet. Maybe later but I'm already satisfied with it and I'm worried that it will get bricked. I paid through Western Union. I think the handling fee for Western Union is around P700. The phone costs only $162 now from where I bought it. Plus it has a 3% discount if you pay by Western Union. I chose EMS as shipping option and it arrived in less than 2 weeks. I think I paid around P8300 all in all for the phone and shipping. Check this site for more info: http://www.chinaphonereview.com/jiayu-g2. It is a great phone. I have no regrets buying it.

Are you based on Metro Manila? From what I understand, Metro Manila-based EMS packages are not delivered straight to the addressee and needs to be picked up at their Paranaque office unlike for the provincial deliveries. How much customs tax/tariff did you pay for your phone? How much was the value declared for the phone? P8300 is very cheap for a dual-core ICS phone with IPS screen.
 

toffzter

Senior Member
Apr 18, 2012
104
5
Are you based on Metro Manila? From what I understand, Metro Manila-based EMS packages are not delivered straight to the addressee and needs to be picked up at their Paranaque office unlike for the provincial deliveries. How much customs tax/tariff did you pay for your phone? How much was the value declared for the phone? P8300 is very cheap for a dual-core ICS phone with IPS screen.

I'm based in Bohol. I picked up the package at our Post Office and I paid P40 only. It was declared around $45. My phone is not dual core but a new dual core version of the phone is released already priced at around $168.
 

bolinao

Senior Member
May 26, 2011
232
14
I just bought the dual core version.. waiting for it to be delivered.
Is there any sample pics taken from the rear camera floating about ?
 
Last edited:

txee

New member
Sep 3, 2012
1
0
(...) It has information where to buy Jiayu G3. But I don't think it is released in the market yet.
]

Hi, there
Just a question.. What the difference is between the Jiayu-G2 and Jiayu-G3 phone?

---------- Post added at 07:05 PM ---------- Previous post was at 06:26 PM ----------

Yes it is rooted. It is a very nice phone and a shame that the 3g does not work in the US.

Sent from my SGH-T679 using xda app-developers app

Hi there,
I also got a Jy-G2 and I completely agree you, it's a very nice and powerful phone. But I don't know how to root it. Some apps like screencasting for require the device to be rooted. Could you please post a brief how-to guide? I'm starting to deal this things witth :D. So, me, at least, would appreciate it. Big thanks!!!
 
Last edited:

toffzter

Senior Member
Apr 18, 2012
104
5
Hi, there
Just a question.. What the difference is between the Jiayu-G2 and Jiayu-G3 phone?

Hello! Jiayu G2 has a single core CPU, 4.0-inch screen, and WVGA resolution while Jiayu G3 has a dual core CPU, 4.5-inch screen and HD resolution. Jiayu G2 has been recently upgraded to Jiayu G2 Plus (or Jiayu G2-S) which is already equipped with a dual core CPU. All the other specs are identical to the single core Jiayu G2.
 

wangiles

Senior Member
Feb 17, 2008
189
20
Hi. Do you have intermittent vibrate function at times? Like typing with vibrate but it suddenly went off and came back again? Or is it some kind of feature?

Also, did you get your compass to work? Mine doesn't and was wondering if you have any rom that helps in this. Many thanks!

Sent from my JY-G2 using Tapatalk 2
 

geezer78

Senior Member
Apr 6, 2007
58
0
]

Hi, there
Just a question.. What the difference is between the Jiayu-G2 and Jiayu-G3 phone?

---------- Post added at 07:05 PM ---------- Previous post was at 06:26 PM ----------



Hi there,
I also got a Jy-G2 and I completely agree you, it's a very nice and powerful phone. But I don't know how to root it. Some apps like screencasting for require the device to be rooted. Could you please post a brief how-to guide? I'm starting to deal this things witth :D. So, me, at least, would appreciate it. Big thanks!!!

Hi there i also would like to know how to root this Phone that is such a nice surprise!

Sent from my JY-G2 using xda app-developers app
 

__-_-_-__

Senior Member
Nov 23, 2011
64
4
Not trying to be a negative Nancy but I would not use a knock off no name Chinese phone to run any kind of business app.

You never know what's embedded in the system that could be stealing your information without you knowing about it. We Americans owe China so much money they are looking at ways to destroy us from the inside.

I really hope you're not running any kind of credit cards, names, phone numbers, social security numbers, etc with whatever business app you are using.

Sent from my piece of crap Zio until i get my E4GT back from Samsung, using XDA Premium app

only ameritars would say such a bs. check your samsung branded phone. it was made in china. even if it says otherwise +90% of the parts were made in china. also samsung is not an usa company.
also why would a country try to destroy it's biggest exporter? such a nonsense and stupidity.
worried about spying? it's your government that uses echelon and admits to spy on their own citizens.


I just got a Jiayu G2. It's almost as fast as a S2. way cheaper and it's dual sim. very easy to root. because of what you said and some curiosity I runned a network analyser and logger and didn't found any evidence whatsoever of any anormal network activity. It's as safe as your samsung. Actually, much safer because it's bloatware free.
For 160$ is one of the best dual sim android phones. I recommend to everyone.
you can get other dual sims with this MKT chip but I wanted this one because it was a S2 copy and that allows me to use some specific accessories. but imo there are better for a bit more money. check newman n1 for example.
 
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myxal

Senior Member
Sep 5, 2011
110
15
I just got a Jiayu G2. It's almost as fast as a S2. way cheaper and it's dual sim. very easy to root. because of what you said and some curiosity I runned a network analyser and logger and didn't found any evidence whatsoever of any anormal network activity. It's as safe as your samsung. Actually, much safer because it's bloatware free.
Hi, can you post which e-shop did you buy the phone at? (PM if you don't want to post publicly). I'm considering this phone myself but I'm somewhat unimpressed by the shops that sell it.
 

wangiles

Senior Member
Feb 17, 2008
189
20
My opinion, Jiayu G2 is better than N1. Very unfortunate that it is a mtk6575. Wait for the mtk6577 g2+.

Why I said that? I got both. Really love the g2. Very unfortunate that it got nand error while I was trying to root it myself.



Sent from my N1 using Tapatalk 2
 

androidnyubi

Senior Member
Aug 8, 2012
171
40
i found this on jiayu bbs (chinese language, use google chrome to translate), i cant speak and read chinese too hehe

bbs.ejiayu.com/forum.php?mod=viewthread&tid=56139&fromuid=5978
or
bbs.ejiayu.com/forum.php?mod=viewthread&tid=65193&fromuid=5978

add http : // in front of the link because im not yet has 10 post on xda dev forum, cant post link, hope it useful, i never tried it myself (havent yet got my self jiayu g2), so no way i take a blame if anything happen to your phone..

i think its easy root tool for jiayu g2, written in chinese but i think it easy to follow, with google translate help :D

im thinking of getting jiayu g2+ (1ghz ram. 6577 dual core) or newman n1, which one is better deal ?
 
Last edited:

bas-r

Senior Member
Dec 21, 2009
118
17
Nijmegen
Thanks for the hint on the root tool. Unfortunately, google translate doesnt translate that page. Would anyone be so kind to post any root instructions for this phone?
 

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  • 9
    Ok guys, here I am :)

    First of all, this guide is intended for the Jiayu G2 1GB dual core.

    After trying the "recovery" and "SP" methods, I definitely go for the SP one. I mean, the recovery is quicker, but with the SP you are sure to have a totally clean Android installation.

    This said, let's start :p

    1) First of all, you have to download this:
    https://mega.co.nz/#!GNwiyYzJ!Z6sRAmT_D4tw2XqfbIgSonVan-sGmviCUMTT8QURdl4

    It's basically the Flasher (updated to fix a UBOOT.bin issue with the JB 4.1.2 IPK) and the Jiayu driver folder.

    2) Extract the archive on your desktop

    3) Go to the extracted folder and enter the "USB VCOM Driver" folder

    4) Select your Windows version and open the relative folder (if you have Windows 8, like me, the Windows 7 folder is the choice)

    5) Once inside that folder, right click on the file according to the proper version of your Windows (x64 or normal).

    6) Select "Install" from the menu

    7) Select yes to the "not firmed driver" warnings and let Windows install the drivers

    8) Now, with the driver installed, plug the USB cable to the computer and to the Jiayu and turn on the Jiayu (Note. this is not mandatory, but since Windows will install some more driver, just let it do it).

    9) After this, unplug the usb cable from the Jiayu, open the back cover of the phone and remove the battery

    10) Download this firmware (is the Official 4.1.2 from Juayu. I've tried a lot of firmwares and as for now the one running better (and without ****ty Chinese apps) is the official one):
    https://mega.co.nz/#!HFRW1DAL!D-ffeBzV7fcd7psCafYT2jOG9nQbHi2BaUWvkjIvtJU

    11) Extract the firmware on your desktop

    12) Now go back to the SP Flashing tool folder (the first file you downloaded), right click on Flash_Tool.exe and "run as administrator" (dunno if it is needed on XP, I don't think so)

    13) Once the program opens, click on the "Scatter-loading" button on the right

    14) Locate the Firmware folder and select the scatter txt file

    15) If you did everything good, the program should load the firmware without any error message

    16) Once done, click on the "Download" button

    17) Now you have to be quick. Connect the usb cable to the Jiayu and quickly insert the battery

    18) If you did it quickly enough, the program should start flashing the firmware. If not, redo the process

    19) Once the flash is done, a green circle will be shown. You can unplug the Jiayu, remove the battery for some seconds and then put it back together with the back cover

    20) Turn on the Jiayu and you will have the new firmware :)
    (Note. your phone will be in Chinese at this point. To have it back in your language, just enter into settings and then scroll down looking for a small "a" image on the left. Once located, enter that menu and press the first option to select your language)


    That's all

    I'm now testing some fix (the GPS fix and the 3G fix). Once done with the testing, I'll post the guides :)

    Credits to Supracer for his advices :)

    Hope it helps. Any question, I'm here

    Cheers
    kok
    3
    Yes, there is an official JB 4.1.2 for the 512mb phone. I flashed it on my 1gb phone by mistake. I discovered that it was a wrong version only because my back camera was not recognized (the 512mb has a 5mpx camera, while the 1gb version has an 8mpx one).

    I just came home but I have to get out again in some minutes.

    In 3-4 hours I'll upload and post the official JB 4.1.2 Jiayu G2 512MB firmware version (the flashing steps are exactly the same).

    Cheers
    kok

    Here it is:

    https://mega.co.nz/#!jEwWDDSJ!BUernB6Otk-_8LqyVQo0mUtvbrph_fgXsJS9BAkLzuY

    To flash it, just follow the guide I posted using this one as firmware.

    Cheers
    kok
    3
    If this helped anyone at least a thanx would be nice

    Jiayu G2 1GBRAM Dual-Core JB 4.1.2
    2
    MT6577 Driver not installing issue

    I too found this ridiculously hard! I tried on XP, W7 then fixed on W7

    I resolved this issue, by

    1. opening system devices, and expanding the list where it says Ports.

    2. Connect the phone without battery and for a second it will see the driver on whichever USB port. at that exact moment right click and update driver. Then install the driver from the file you have manually. (YOU WILL HAVE 1 second maximum before the thing disappears).

    (If this method does not work, then Add the Driver Manually, Go to System32, and Hdwwiz.exe (show all devices, then look for mediatek, then click "have disk")

    Basically you JUST have to MAKE SURE you get the MESSAGE "THE DRIVER INSTALLED SUCCESSFULLY" in system tray. Does not matter if phone is connected or not. It just has to be installed so that it is NOT installing during SP Flash tools! otherwise will not work!

    3. disconnect phone after driver installation.

    4. Run Sp Flash tool (run as administrator)
    (make sure its a higher version as stated on the tutorial I used Latest version SP_Flash_Tool_v3.1224.01 (search in google to download)

    4. Add scatter file,
    click DOWNLOAD, immediately attach phone, without battery (but leave the battery kind of hanging on so you can press it straight in). Once you get the red bar, coming up then immediately press battery down. it SHOULD then go onto the next colour of the bar which is yellow (the SP Flash tool needs the battery to continue powering the phone to write data to it).

    DO NOT WORRY IF IT DOESNT WORK FIRST TIME ROUND OR EVEN 10 times, it will not mess up your phone provided you have not gone past RED bar. If it starts writing and you disconnect you could cause issues as it has begun writing data - solution would be to re-run SP flash tools again. Usually it disconnects after RED bar if you havent done it right.

    You may get BROM errors, and DISCONNECTION errors, keep trying!!! YOU WILL GET THERE.

    Believe me this needs PATIENCE. I tried EVERYTHING, then finally got the driver to install as above, and got the USB to recognise - then the scatter will . Also, sometimes if your USB is loose, when you have pressed battery down then make sure you keep the USB wire in with your hand against the phone. (not too tight, but tight enough so it doesn't lose connection - ONLY if you have a loose connection)


    :highfive:



    Me too. I'm presently stuck!

    Unable to get the MT65xx Preloader driver correctly installed.

    So far I’ve tried W7, and XP (twice) Total 3 different computers! Have factory reset the G2 also.

    Symptoms are plug in the USB to the G2 with no battery installed and MT65xx Preloader flashes up under com ports in device manager, then disappears, then flashes up again, then disappears.

    This repeats and repeats!

    Once I do manage to get the driver loaded the device then totally vanishes. Nothing listed at all now in com ports! Obviously I then get the error when loading the Flash tool scatter file.

    What am I missing? Is there a key sequence to be pressed when inserting the USB into the G2 with no battery installed?

    Thanks.


    ---------- Post added at 04:35 PM ---------- Previous post was at 04:10 PM ----------

    Just a heads up to my UK friends...

    The 3G does not seem to work on my handset on the Orange (UK) network, it gives you 2G, but no 3G access (just spoke to Orange and they think hardware does not support it.)

    Band Specification of Phone

    Band 2G: GSM 850/900/1800/1900MHz
    3G: WCDMA 850/2100MHz

    OS Android 4.1.2 JB
    CPU MTK6577, 1.0GHz
    ROM 4GB
    RAM 1GB

    Any ideas?? Anyone get the 3G working in the UK on any network?
    2
    Not trying to be a negative Nancy but I would not use a knock off no name Chinese phone to run any kind of business app.

    You never know what's embedded in the system that could be stealing your information without you knowing about it. We Americans owe China so much money they are looking at ways to destroy us from the inside.

    I really hope you're not running any kind of credit cards, names, phone numbers, social security numbers, etc with whatever business app you are using.

    Sent from my piece of crap Zio until i get my E4GT back from Samsung, using XDA Premium app

    only ameritars would say such a bs. check your samsung branded phone. it was made in china. even if it says otherwise +90% of the parts were made in china. also samsung is not an usa company.
    also why would a country try to destroy it's biggest exporter? such a nonsense and stupidity.
    worried about spying? it's your government that uses echelon and admits to spy on their own citizens.


    I just got a Jiayu G2. It's almost as fast as a S2. way cheaper and it's dual sim. very easy to root. because of what you said and some curiosity I runned a network analyser and logger and didn't found any evidence whatsoever of any anormal network activity. It's as safe as your samsung. Actually, much safer because it's bloatware free.
    For 160$ is one of the best dual sim android phones. I recommend to everyone.
    you can get other dual sims with this MKT chip but I wanted this one because it was a S2 copy and that allows me to use some specific accessories. but imo there are better for a bit more money. check newman n1 for example.