yashsingh1/xdaforums huggingface dataset:
[General Questions and Answers] pr0xZen:
The fact that Jiayu released the G3S, could also lean in a favorable direction - as the G3 platform will live on for a while - and both G3S and G3N will probably get some firmware updates in the time to come. But as the S is an entirely different SoC, and the N has a different com chip (s501), this is not a definite thing. But - that the G3 platform lives on for a while, could be favorable.

IMO, your best bet as of now - is to go for the official beta, as it is pretty stable - or one of the more worked-on unofficial ROMs. Myself, I've been og Gthrill V3 for over 2 months (Cyanogenmod 10(JB 4.1.2)). Made a few small tweaks, not had a single crash or bug. Can't say the same about the updated official G3 Ice Cream Sandwich rom, wich I ran for the first 3+ months.
[General Questions and Answers] KURT.Beadles:
Opening up JY-G3

I have had my JY-G3 for more than 4 months and frankly speaking I haven't used it that much since both the GPS and 3G signal is very much unusable. I have tried all of the ROM's out there but it's definitely a HW problem. I don't want to send it back to China again (it's been there once already due to a broken display) since it would cost me another $45 and it takes about two months to get it back.

What I want to ask is, if there's a way for exchanging parts in it by opening. Could someone point me to where I could get some info on opening it up etc.

:eek:
[General Questions and Answers] pr0xZen:
Unless you have a signal problem where you reside, or using ROMs that are designed for the G3N edition (s501 radio chip) and have 1st generation G3, then it sounds like a hardware issue. I've never had 3G problems overall, just at home (where the 3G coverage is bad for all phones, so not a phone issue). My GPS was problematic, but it works quite ok now that I've enabled AGPS. Getting the fix seems to be the main issue.

Of course you can open up your phone and exchange some parts, but its definately not going to be a simple task. It will require highly specialized equipment and complex skills. These parts are not "screwed on", or intended to be exchangeable. If you're not an electronics engineer or have similar skills, and have both equipment and contacts to get the actual parts - it will be much more reasonable to just cut your losses and get a new phone.

You might find some information on the official Jiayu forum (chinese) : http://bbs.ejiayu.com/forum.php?mod=forumdisplay&fid=33&filter=typeid&typeid=35

EDIT: If your mobile operator is like mine (an operator that doesn't own its own physical cell network), it might offer coverage on several actual networks. If this is the case, you might have better success attempting to connect manually to a mobile network - this way it won't jump back and forth across networks. It made a world of difference im my case.
[General Questions and Answers] JonR1230:
XIII antytph

What are the differences in the different com chip? I thought the only difference was going from 6620 to 6628 4 in 1 chip? Is that what you are referring to?

I've done a lot of reading but there is so much to go through it's a bit confusing. What is the official beta exactly? Also, I saw a ROM from ervius. How does that compare to the Gthrill and what tweaks did you make?
[General Questions and Answers] KURT.Beadles:
Great thanks for the exhausted answer :thumbup: I will **** around a bit more with your advice in mind. It's not such a great deal to take the loss anyway. If I wanted a trouble free phone I'd buy a non Chinese brand. I'ts what they say; one gets what one's pay for :D
[General Questions and Answers] pr0xZen:
This was what I was referring to. The G3N uses revision s501. Its a newer revision (precious revision was s500) - slight modifications, but enough to need different instructions. Thus, if you run a rom designed for G3 on a G3N, or vica verca - wireless communication (GSM/3G, wi-fi etc etc) - will not function properly.

"The official beta", is the JB rom that Jiayu released. Its an official rom for the Jiayu G3 made by Jiayu, although still beta.

I've never tried any ervius ROM with this, so I can't really comment on it. I did try out the MIUI one - seeed good and stable, but couldn't stand the design and interface. I like my android, android - not an iOS feel.

I replaced the clock app in the GThrill V3 rom, and had to modify PhoneNumberUtils.smali to get contact lookup on call/sms/mms to work. The original rom was probably designed for chinese use - so it's set up for phone numbers with a minimum of 11 ciphers, PLUS any potential international area code. Meaning, even though the recieved call and stored contact is exact match - if less than 11 ciphers - no matching.

---------- Post added at 12:49 AM ---------- Previous post was at 12:36 AM ----------

Yeah, this is true. Extensive testing, support and quality control has its price tag. Hopefully most people take these things into consideration, when buying low-budget phones from china, that were never designed for international distribution (and the ISO requirements involved).

Its sad to hear you had such a poor experience with the set though - The G3 is probably the best experience I've had with a phone, since my Nokia 6110 was brand spanking new. Seeing Jiayu revamping this with the MT6589, leads me to conclude with some hope for their part, that you were the unlucky one here. In general they seem to be doing a pretty good job - but as you said - you get what you pay for, and you're paying the underdog.
[General Questions and Answers] mengfei:
Go for the LEWA ROM 4.1.2 they always have updates almost weekly

been using it for a few months now & so far so good
[General Questions and Answers] pr0xZen:
+1 that. I tried one of the Lewa roms on needrom.com before the Gthrill v3. Wasn't for long though, Norwegian keyboard wasn't in there (atleast not at that point) - but the rom itself is quite good if you like the design. They also offer a touch recovery, if you fancy a change from CWM (CWM does too, but haven't tested one that worked yet).
[General Questions and Answers] emanuelparedes:
Good afternoon,

I received my Jiayu G3 three days ago, and I love it. However, I have some questions:

- Is there any stable, 100% functional ROM? Right now i'm using G3 MOD v 2.0 by roky_rs, everything works fine, apart from the low in-call volume..

- How can I calibrate the proximity sensor? When I make a call, the screen turns off, but it takes a while to turn on, and I can't end calls.

- I've already made some calls, but I think the in-call volume is too low. Is there anyway too increase the volume?
[General Questions and Answers] pr0xZen:
Wich version of the G3 is it? The roms for G3, G3N and G3S are

NOT

interchangeable. Some G3 roms can be patched to work with G3N, but they won't function properly "as is".

If it's the "good 'ol G3 - then you should read back 2-3 posts.

Both of these can be tinkered with, using Mobileunchle MTK Tools (free @ Android Marked / Google Play. Audio settings can be found under Engineer Mode (MTK) -> Hardware Testing - Proximity sensor can be calibrated under Engineer Mode (MTK) -> Other extra -> PSensor .

I would reccomend you do a nandroid backup first though - or atleast write down the settings "as is", before attempting to adjust them.

Keep in mind, there's a reason the screen turns off - otherwise your ear etc, will operate your touchscreen without your consent, while in call.
[General Questions and Answers] emanuelparedes:
Mine is G3N (S501 chip). And I've already installed a ROM and it works like a charm (Wifi and Bluetooth, GPS not tested yet). But I wanted to know if there's an even better ROM.

I've already installed Mobiluncle Tools, but I don't know what to change to increase the in-call volume. I've read somewhere that I had to change the "Shp" values (under Audio -> Normal Mode), but I don't know the correct values to increase the volume :s

About the sensor... I know it has to turn off the screen, but I also know that it has to turn on the screen :P And that is not happening. I've done that calibration, but nothing has changed, at least I didn't notice any changes.
[General Questions and Answers] pr0xZen:
Well, as you say the ROM you've got works like a charm - I guess whatever other rom that should be equally functionable, would be a matter of subjective taste from that point on, rather than function.

I'm not sure what value would be the correct one for you - just choose "level 6" (if its the highest) and increase in small increments of 5 and test each step. Too much could damage your speaker.

The calibration of the Proximity sensor isn't all that precise - you might want to try a few times with different distances. If the sensor triggers your screen to turn off, it should (if functioning properly) turn it on too. If your screen just times out, you'll have to press the button to get it on again.

If these things doesn't work out, I suggest you do a full nandroid backup, and try a different rom. It could turn out to be a rom issue. If not, it only takes a few minutes to go back.

EDIT: If you feel the need to try a different rom, I would personally recommend Gthrill V3 (http://xdaforums.com/showthread.php?t=2163707). Its the only one I have used for a longer time, and I've found it working very good though. Make sure you follow the instructions, and get rom for G3N - as there's a version for both G3 and G3N. Download from needrom.com (http://www.needrom.com/mobile/jiayu-g3n-gthrill/), as I believe the one linked in the forum thread, is quite outdated.
[General Questions and Answers] emanuelparedes:
Thanks for the help, I will try that. My only concern is the possibiltity of an hardware problem :x

I've change some values, on SpeechEnhancement, now the volume is a bit higher, but it sounds really "deep" and a bit distorted too :s
[General Questions and Answers] hndr_haryanto:
Waiting my phone come.. And will root using this metod. :)

Very usefull. Thx before.
[General Questions and Answers] pr0xZen:
Hopefully you noted down the settings before changing them. I would suspect the values regarding SpeechEnhancment, might affect both sound and volume quite different than the "volume" settings.
[General Questions and Answers] emanuelparedes:
Well, I'm going to send the Jiayu back to the store, and hopefully, I will trade it for the THL W100, which is much better than this one. I only have the Jiayu since Thursday, so I guess I will be able to trade the cellphone.

My only question is: how can I revert the cellphone to full stock? I mean, no recovery, no root and ICS 4.0.4 from Jiayu. (I have a G3N)

Thanks.
[General Questions and Answers] pr0xZen:
Not sure what you paid for it, but hopefully not too much. Does the return costs, and the risk of it being returned to you "as is", at your cost - seem fair enough? (If would guess flashing a different rom voids any warranty you might have, and I don't know if there is any form of flash counter on it). I've no idea what kind of shipping costs or customs charges you might be facing - but I had to return a phone for repair to china from Norway, and the total costs didn't really work out too well.

You should be able to find stock recovery and rom lying around - search this forum and use google for its intended purpose. Just make sure you get a rom for the 3GN. I have no idea on unrooting this phone. Might be something on this thread ^^
[General Questions and Answers] emanuelparedes:
That's the good part: I will not pay for anything. I'm from Portugal, and I've bought the Jiayu from an excellent company from Spain. And their warranty policy says that I don't have to pay, if I want to send the cellphone to the warranty (or to send it back if I am not happy with the Jiayu).

Well, maybe you can help me.

Some guys from a Spanish forum told me to download the ROM from here: http://www.pandawillforum.com/showthread.php?19158-Jiayu-G3-ROM-%2820130223-version%29

and then, install it with flashtool, that I can download from here: https://www.dropbox.com/s/obqoiw8x640nhl3/FT3.13.04.rar

But I have two questions:

- What about the recovery? Does this install stock recovery too?

- And the important question: How can I install this? I've never used flashtool :P
[General Questions and Answers] pr0xZen:
I would guess this all depends if you can return the phone to a state that appears untampered with.

Instructions on using flashtool, should be available further towards the start of this thread. The link you gave, also links to instructions at the bottom of 1st post ^^ . Make sure you get the .zip file marked for PC Update. The TF update is only intended for updating (from within) original rom.

Please, look through the thread, and search - before asking. The name of this thread, and the fact that it already holds almost 700 posts, should indicate that such a subject has been covered already - several times.

Recovery, Flash tool, drivers etc - are all included in the "PC Update" .zip mentionen, @ the forum link you posted.
[General Questions and Answers] emanuelparedes:
Hey,

I've installed stock 4.0.4 via Smart Phone Flash Tool, but now, when I try to enter recovery mode (Vol Up + power), it shows me this:

And when I press Vol Down + Power, it enters "factory mode", with a menu that says "Full Test", "Item Test", "Test Report" , "Clear eMMC", "Version" and "Reboot".

Is this normal? Or do I have to install stock recovery?
[General Questions and Answers] pr0xZen:
Now its been so long, i can't remember well enough to confirm (maybe someone else here can?) - But I do belive this IS stock recovery.
[General Questions and Answers] sokomind:
same issue.

my 5th mtk 6577 mtk6589 device and all gps signal strengt is under quarter of any htc-motorola-samsung.
[General Questions and Answers] pr0xZen:
Did you get your rom from http://www.needrom.com/mobile/jiayu-g3n-gthrill/ ?

There was several updates of the Gthrill V3 for the G3N - last one with Lolfisch v1.2. Changelog indicate it fixed problems with GPS. Have a read.

EDIT: As this update is only for the G3N and I have the vanilla G3, I sorted it out by enabling A-GPS with Mobileuncle MTK tools. Seemed to me the problem wasn't during navigation, but getting the initial fix. With A-GPS the cell towers provides fix data for you, in an instant. There will be minute data transfers, but so far it has worked great for me.

The A-GPS "trick" should work for every unit with A-GPS capability, wich is more or less every modern smartphone with GPS. Even if the GPS works fine when operating, it will speed vastly up the fix (wich is its entire purpose).
[General Questions and Answers] hndr_haryanto:
Clean instal after rooting. No happy with root. :D

Thx for great info.
[General Questions and Answers] KURT.Beadles:
I agree that my Jiayu G3 has a pretty inferior GPS signal, but my Newman N1 has close to an excellent GPS and it's also mtk 6577.
[General Questions and Answers] pr0xZen:
Either a software issue, or design flaw. Either way, they claim the GPS issues were fixed (for the G3N) with Lolfisch v1.2. Worth a try. And A-GPS is still a viable solution to make it work as it should...for now.
[General Questions and Answers] KURT.Beadles:
Tried to Google lolfisch but the first hit was "penis" he he. What is lolfisch?
[General Questions and Answers] pr0xZen:
Not quite sure to be honest, I believe it is part of the GThrill v3 rom.

http://www.needrom.com/mobile/jiayu-g3n-gthrill/

You have to be registered/logged in on needrom.com to be able to see the downloads.
[General Questions and Answers] KURT.Beadles:
Thanks, that was the one I have installed :D
[General Questions and Answers] onetimeuser12:
How do I downgrade OS on Jiayu G3

After rooting my phone and upgrading to jelly bean then finding out it sucks extremely hard I want to downgrade to stock phone. help

---------- Post added at 01:34 AM ---------- Previous post was at 01:00 AM ----------

in full frustration of removing this awful jellybean i unrooted the phone and then factory reset it, now it is in a boot loop HELP
[General Questions and Answers] onetimeuser12:
Root for 4.1.2

Are there any root for 4.1.2 and not just stock rom?!?!?!?
[General Questions and Answers] nalefas:
Hi, i bought this phone and i'm very happy with it. I have 2 questions:

1)The only problem i have is with the gps. I can't connect with a sattelite. How can i make it work?

2) Do you recommend me to put a custom rom in this phone or stay with 4.0.4 and what rom?

thank you!
[General Questions and Answers] hndr_haryanto:
Anyone can help me decide which ROM should I instal with my G3?
[General Questions and Answers] mengfei:
LEWA :laugh:

http://www.romzj.com/resources/default.html?view=roms&cid=257&layout=default

http://bbs.lewaos.com/download.php
[General Questions and Answers] hndr_haryanto:
I forgot, I mean aside from Lewa :)
[General Questions and Answers] mmaacc:
I got a new G3S by accident. Actually ordered a G3 from DHGate but got the new model for the old price :).

There is a new official SW release out already, the phone came with 20130515 version. Download here: http://bbs.ejiayu.com/thread-557884-1-1.html

Only for G3S (quad-core, MTK 6589)
[General Questions and Answers] JonR1230:
Does this phone support AT&T 3G, which is 850/1900MHZ?
[General Questions and Answers] mengfei:
still from this site lots of different ROMs, just scroll down or click the blue links above for ICS or JB or official

http://www.romzj.com/resources/default.html?view=roms&cid=257&layout=default
[General Questions and Answers] boofman:
wow! how much did you get it for?
[General Questions and Answers] winm:
thank you....
[General Questions and Answers] mmaacc:
178$ (free shipment), next day after the order the price went up to 199$. So I hit that sweet spot when the old model ran out and the new one did not arrive :)
[General Questions and Answers] boofman:
lucky you! congrats buddy!
[General Questions and Answers] hndr_haryanto:
You are lucky, guy. :)
[General Questions and Answers] hndr_haryanto:
Thx guy. :)

---------- Post added at 05:42 PM ---------- Previous post was at 05:23 PM ----------

Agains.. sorry my G3 is G3N...
[General Questions and Answers] mengfei:
then you can go to NEEDROM there they have ROMs for G3N ;)
[General Questions and Answers] hndr_haryanto:
Thx alot, guy. :)
[General Questions and Answers] waxtah:
I buy JY-G3N for 178$ (free shipment).

And succesfully get root acces with "Root with Restore by Bin4ry v30".
[General Questions and Answers] JonR1230:
Does anyone have AT&T and get 3G to work?
[General Questions and Answers] onetimeuser12:
Jiayu G3 ROOT on jellybean

After rooting and installing jellybean I accidently removed the root on my device. I can only find roots for icecream sandwich and not for the jellybean upgrade. Are there any possibilities to reinstall my root again or will I be forever stuck with jellybean? PLEASE REPLY:mad:
[General Questions and Answers] slightlee:
jiayu g3 driving me bonkers

hi

sorry if this is in the wrong place but my jiayu g3 is driving me bonkers.

i bought it from pandawill in january, it developed a screen problem after about a month and gps was rubbish, i sent it back for repair and it has another problem with the screen flickering and sometimes jumping around.

do you think this is a software problem or hardware?

i am very tempted to send it off for rooting(ive never done it before) but it will obviously make the warranty void.

if i send it back itll be another 10 weeks wait and will it work!

i posted this in q&a but had no replies .......... youtube.com/watch?v=zDl9V8obQeM&list=HL1371386824

thanks

lee
[General Questions and Answers] Acidwire:
root it for free yourself here: http://www.youtube.com/watch?v=OpxgavcJKow

itll only take you 5 minutes, i did it myself by following the video although the guy is a little hard to understand due to his accent (he has very good english though, not his fault) he basically says

1. install the PDA Net drivers for the jiayu g3 (files in a link under his video, just extract the rar file and run it)

2.connect your phone in usb debugging mode (settings > developer options > check debugging mode)

3.install root checker from the playstore free to check if the root is successful when youre done

4. download root with binary from this thread: http://xdaforums.com/showthread.php?t=1886460

5. open root with binarys cmd application and press number 1 on your keyboard and press enter as the phone is a normal device

6.when the screen pops up on your phone select "restore my data"

7.it should reboot, click on root checker to see if it has been successfully rooted

i dont think rooting it will affect the display problems i think it might be a hardware issue (faulty screen or connection maybe?), the GPS has always been very poor. my GPS took ages to lock on and it still doesnt actively follow the root it just lists the directions when you click it instead which sucks :l you can calibrate your GPS to lock on faster by following this video: http://www.youtube.com/watch?v=NsUSvd-SlVo my jiayu g3 was still configured for china instead of uk and mine now locks in under a minute outside (indoor you have no hope unless using wifi) instead of waiting to lock for 15 mins +

i havent heard very good things about pandawill and their support forum is full of people who arent complaining about being ripped off, i bought mine from touch-us.com, theyre a chinese site but they have excellent customer service who reply instantly through email and on live chat and they open each phone up, root it free and check it works properly before shipping plus they accept paypal. i got it in 7 days fully tracked too
[General Questions and Answers] slightlee:
thanks for the reply, very interesting, as for fully tracked, the first time i sent mine back the post office wanted £65! so i plumped for signed for at £15. how much did you pay and who did you use? or did you mean you got it in 7 days tracked from new?

i have already bought a new battery from pandawill in case it was a power/current problem but it still did it.

they have now said it "could" be the screen and i am welcome to buy one from them....i told them i wanted it for free or i might as well send the whole thing back for repair under warranty....i have not heard back yet.

lee
[General Questions and Answers] Acidwire:
you can use the icecream sandwhich root method on jellybean http://www.youtube.com/watch?v=OpxgavcJKow, the xda link under the video says root binary roots nearly every jb and ics phone

---------- Post added at 08:28 PM ---------- Previous post was at 08:20 PM ----------

it was tracked from the seller to me brand new, touch-us.com

to be honest it sounds like they are milking you for every penny you have, dont bother with repairs see if you can return it for a full refund (did you fund it with a credit card?) ask your bank if they will do a charge back if you send the item back tracked (use an international courier itll cost a maximum of £30) with a signature as pandawill arent co operating and sold you faulty goods.

they know full well its most obviously a screen defect and are just trying to make you buy more items from them

if you manage to get a refund buy it again from a uk/usa (depending on your country) ebay reseller as at least youll be protected against faulty items and itll be sent in a few days or use a better website (pandawill and fastcardtech imo are really bad for service)
[General Questions and Answers] pr0xZen:
Do a search for forum feedback/reviews on chinese webshops. Some are very serious, but far too many are crap in regards to service and returns. Stay away from TinyDeal too with things over $15 - refunds or equal replacement with them are a nightmare. Most carry these phones, and if you get a full refund you could get closer to a G4 now.

Some of these smaller webshops have highly active android community members, and gives extra service and support to fellow forum members.