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
Hi! I just ordered the Chinese smartphone Jiayu G2 from an online store. It is dual SIM, 1 GHZ MT6575 CPU, 1 GB RAM, 4 GB ROM, 4.0 IPS screen, dual cameras with 8.0 megapixel rear camera, and Android 4.0 Ice Cream Sandwich. Look at the full specs here: http://www.chinaphonereview.com/jiayu-g2

I bought the phone because it has good specs and the price is only $169.99. I'm still waiting for it to be shipped though. I would like to know your opinions about this phone and if there are people who have tried this phone already. It would be nice to have some type of support for the Jiayu G2 in this forum.
 
KayxGee1

KayxGee1

Senior Member
Jul 28, 2011
630
65
Totowa
Chinese phone usually aren't supported in this forum just because of the fact that most people here by brand name products. It looks like a great device based on specs. Give us your thoughts when you get it.

Sent from my Droid 3 on AT&T with Unlimited Data
 
Devriel

Devriel

Member
Jun 27, 2012
49
7
Roma
who knows, maybe it will be a good phone to start the experience with android, but here in italy you can take with 199 euros the excellent somy xperia u, that's a dual core android phone, that it's supposed to be followed by community.
i think that your won't be supported here, but with android you can do thousands things.

i hope you will enjoy your phone.
 
J

joefrog1996

Senior Member
Oct 7, 2011
451
51
I always get ripped buying anything shipped from china. If it seems to good to be true..... IT IS.

That said if the phone is any good please let us know

Sent from my Incredible 2 using XDA
 
F

Flying Scotman

New member
Sep 10, 2010
4
0
I received this phone from China last week, I am using it to run a business app, all is well, good screen and great to have more memory than on some other phones.

Testing Wifi printing, again no problems, only issue I have is with the Bluetooth and sending large data packets.

Another point I am not using this as a phone so can't comment on that.

But overall I am very impressed with the quality and service provided.
:good:
 
T

toffzter

Senior Member
Apr 18, 2012
104
5
Flying Scotman said:
I received this phone from China last week, I am using it to run a business app, all is well, good screen and great to have more memory than on some other phones.

Testing Wifi printing, again no problems, only issue I have is with the Bluetooth and sending large data packets.

Another point I am not using this as a phone so can't comment on that.

But overall I am very impressed with the quality and service provided.
:good:
Click to expand...
Click to collapse
It's good to know that someone had a good experience with it. I was afraid it only looked good on paper. But now I feel confident that I made a right decision by buying it. I will definitely share my thoughts on this phone when I receive mine.

By the way, is your phone's firmware updated? There's an update for Jiayu G2's firmware at their official website www.ejiayu.com dated May 24, 2012. But you need to translate their website from Chinese to English with Google Translate.
 
Last edited:
T

toffzter

Senior Member
Apr 18, 2012
104
5
teraih said:
if you wanna get a chinese brand phone with low price, get Huawei.
Click to expand...
Click to collapse
Huawei is a more established Chinese brand, so it is much more expensive than the other Chinese phones. But I think Jiayu has a lot of potential reaching the international market because it has its own factory with a research and development department. It also has its own website with support for its products.
 
F

Flying Scotman

New member
Sep 10, 2010
4
0
Hello,

In the about phone tab I have this
Android Version is 4.0.3
Kernel Version : 3.0.13
I just checked the search for updates and it said there was one from 27th June.

When you say firmware is that the same as the kernal version ?
 
T

toffzter

Senior Member
Apr 18, 2012
104
5
Flying Scotman said:
Hello,

In the about phone tab I have this
Android Version is 4.0.3
Kernel Version : 3.0.13
I just checked the search for updates and it said there was one from 27th June.

When you say firmware is that the same as the kernal version ?
Click to expand...
Click to collapse
I'm not really sure. I think firmware and kernel are different things. Can someone help us here?

Did you update your phone already? Has your Kernel Version changed?
 
Last edited:
demonskill

demonskill

Member
Jun 29, 2012
35
6
kernel and firmware are two different thing.
kernel is core component of the operating system (Android) that does the communication with the hardware.
 
T

toffzter

Senior Member
Apr 18, 2012
104
5
brady56 said:
This is a knock off Meizu M9 phone.as i find the Original meizu M9 phone sell in http://newandroidsale.com/ at a cheap price,.i am not sure this phone wether still worth to buy?

---------- Post added at 03:28 PM ---------- Previous post was at 03:14 PM ----------

i think your HTC ONE X will much much better!!
Click to expand...
Click to collapse
I disagree. Jiayu G2 looks more like Galaxy SII. Meizu M9 costs around $260 from the link that you provided. It's $100 dollars more expensive than Jiayu G2. That's a big difference and Jiayu G2 has much better specs. So Jiayu G2 is clearly worth buying.
 
Last edited:
T

toffzter

Senior Member
Apr 18, 2012
104
5
I just received my Jiayu G2 today. My initial impression of it is very good. The navigation is very smooth, no lags. The IPS screen is clear even when viewing at angles or at direct sunlight. Tried WiFi connection and it browses the internet fast. The camera is better than I expected it to be. Images captured were clear. The phone is certainly worth it. I'm loving my new phone already.
 
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    kokuo81
    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
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    3
    K
    kokuo81
    kokuo81 said:
    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
    Click to expand...
    Click to collapse

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

    Jiayu G2 1GBRAM Dual-Core JB 4.1.2
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    S
    salmanc
    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:



    shrimpodog said:
    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.
    Click to expand...
    Click to collapse


    ---------- 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?
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    __-_-_-__
    Mattix724 said:
    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
    Click to expand...
    Click to collapse

    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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