yashsingh1/xdaforums huggingface dataset:
[Device Reviews and Information] LuxZg:
GPS

Hi everyone,

I had some limited testing with Doman in this thread here, and so far it seems that turning WiFi/3G OFF while using GPS helps a lot with accuracy. I'm looking for more input, and from different ROMs too - just try turning data connectivity OFF and than record a GPS track, and see if accuracy is now in the +/- 5 meter range or do you still get jumps to the nearby forests and adjacent roads. As far as we've tested (though on a small scale) - it trully works, but since GPS on this phone has it's own mind, I want to make sure it's not just two of us getting a lucky streak.

You can post your finidings in the GPS thread :)

Thanks!!
[Device Reviews and Information] pozzeco:
GPS

I did this: http://en.miui.com/forum.php?mod=redirect&goto=findpost&ptid=10317&pid=471584

I tapped it on the backside of the coverI don't know, if it helps.

Waze - tracking awful.

IGO and Sygic way better, but still not good enough.

Stock JB 20140609-211642
[Device Reviews and Information] jojimat:
New ROM for G4S & G5S

New ROM From Team Force - RAINBOW ROM 4.4.2 TF

http://androidteamforce.es/rom-g4s-g5s-rainbow-rom-4-4-2-tf-team-force/

Preview :- https://www.youtube.com/watch?v=CdcDXy980ZM
[Device Reviews and Information] maciasso:
Did you install successfully any custom recovery in v3?

I've tried to install many (PhilZ Touch, CTR, TWRP) by MobileUncle Tools – with no luck.

It's rebooting to Android System Recovery only. Any ideas how to get it working?
[Device Reviews and Information] Bradati:
Hi,

Something went wrong when I tried to flash a custom rom, so now my phone wont boot anymore. I can get it into recovery-mode, but cannot get it back to life in any way. When I hook it up to my PC it just keeps on connecting/reconnecting. It isn't really recognized by the pc.

Can someone help me with some tutorial. What do i need to do step by step?

Thank you
[Device Reviews and Information] Mbariah:
Anyone noticed that both sim1 and sim2 have the same IMEI...??
[Device Reviews and Information] borx28:
Yes, are the both same.
[Device Reviews and Information] marisat:
this rule because of the 10 post

---------- Post added at 02:24 PM ---------- Previous post was at 02:18 PM ----------

hello to all of my phone and locked sp flash tool gives me this

Error: ERROR: NAND Flash was not detected
[Device Reviews and Information] but-888-:
Battery inserted when using SP?
[Device Reviews and Information] jojimat:
Remove the Battery.
[Device Reviews and Information] Bradati:
Can anyone help me? How to unbrick the phone? Ty
[Device Reviews and Information] Doman:
Flash official firmware with SPFlashTool. Look at www.needrom.com for firmware.
[Device Reviews and Information] insann:
My friend's Jiayu G4S can't get signal, tired flashing roms, none solve the issue. Ideas ?

PS: Still no turning back after flashing v3 right ?
[Device Reviews and Information] but-888-:
Restore imei Backup, if no backup available flash original Jelly bean rom via Sp flash tool
[Device Reviews and Information] marisat:
without battery

I tried so but nothing to do
[Device Reviews and Information] GoJo ^^:
THANKS! For this detailed review. Few things :

1/ How can you use GPS without data..? I mean, you can't always have offline maps! GPS needs data to work normally.. So that isn't fix to me. 150m off is quite terrible.

2/ CallerID issue, you don't have it but why? Did you fix it or was it fixed in the ROM you use? Its the worst issue of this phone so far, none can stand such.

3/ Regarding the camera, any compare to be found, showing same things took with the jiayu and a galaxy for example? You say it's software issue, any 3rd party can apps give better results?

4/ Need SP Flashtool to flash roms, that's all? I guess once you've set up cwm/twrp, you can flash/nandroid from there like any other phones? NeedRom's best & safest place to get roms currently?
[Device Reviews and Information] Doman:
Yes you can use GPS without data (internet connection).

There is at least a few offline navigation apps, even freeware. I use GPS without AGPS in G4S. Sometimes it gives me even worse results with Wifi/Mobile network assistance, so I keep this option off at all times. I get fix within seconds (apart from deep forest) and have a quite decent accuracy. Search for Jiayu G4S GPS issues thread.
[Device Reviews and Information] stu1690:
Hi, i am looking at buying a Jiayu G4S and would like to know if i would have to root and flash a new rom onto it when i receive it or is the stock one good to go?

Edit

I have read some of the posts here and it seems the stock rom is not that good. What is the most stable rom available to date?
[Device Reviews and Information] Doman:
I use stock... what bad have you read about it? I've tried also customs and came back to stock. It all depends what are your personal requirements.
[Device Reviews and Information] Mbariah:
am still on stock and haven't had any issues..except maybe missing xposed
[Device Reviews and Information] stu1690:
Are you still on Jell bean 4.2.2?
[Device Reviews and Information] Mbariah:
Yes...
[Device Reviews and Information] LuxZg:
1) I always have offline maps. Not to be an advertiser, but there are many navigation apps that offer FREE offline maps, you can also pay for some, and there are both cheap and expensive ones. But yes, you can navigate completely offline. And who said 150 meter off? 99% of time I get routes inside +/- 5 meter distance from where I actually am, many times it's on spot.

2) Not that I don't have it, or that it's fixed, but I always used numbers with full prefix, so +/country/area/phone for example +385991234567. And when someone calls me they get recognized just fine. Where I did notice it is when sending SMS to +385991234567 vs 0991234567 .. those get in 2 threads. But usually I just REPLY to msg I already got, so they are together, I don't type numbers each time I want to SMS someone. So yeah, all my SMS are "in order" as well, except few older ones I actually imported from previous phone.

3) I used stock camera app, nothing special. And unfortunatelly we were comparing photos on our phones, so there's no "proof" or sample. Also, this does include the small screen size because we were watching them on phones as well, so no 100% zoom on 24" LCD. But when we did zoom in on photos a bit, they were comparable. And if it can compare favorably with HTC and Samsung phone more expensive than Jiayu - I really can't say it's a bad camera, can I? Sure, there are probably dozens of phones with better cameras, but that doesn't make Jiayu really bad.

4) Yes for the tools. As for needrom to be safe.. eh.. I'm not really convinced yet. I stay on stock rom, well, it's from jiayupolska.pl (Polish distributor website) so I guess it's just as good as coming from the source. Actually better, since it has no Chinese apps, keyboard is normal, etc.

[MENTION=6014427]stu1690[/MENTION] - 4) is answer for you as well I guess :)
[Device Reviews and Information] kolibri.croatia:
Is this new ROM flashable via CWM? I had to switch to CWM flashing because flash tool not working on my laptop...
[Device Reviews and Information] aieromon:
Yes it can and I'm presently on a deodexed ROM by jemi. Who here has flashed a MIUI ROM?
[Device Reviews and Information] Ouzo:
Do you mean the one mite_Jan linked to? If so, I think so.

The stock ROMS definitely are not CWM flashable.

Why can't you get flashtool working on you laptop? Did you install all the drivers, including the vcom driver?
[Device Reviews and Information] kolibri.croatia:
I have vcom driver but dont know how.to install it. Btw i have windows 8.1 but drivers are for xp and win7...
[Device Reviews and Information] longo213:
Try to connect your phone (with battery removed) to your PC using USB. Windows will find a new hardware, choose install driver, search for it and install the Windows 7 driver for the correct Windows type (32 or 64-bit).
[Device Reviews and Information] Ouzo:
What Longo213 suggests should work.

I had trouble with the vcom driver too. I had already partially installed the other drivers when I had a different MTK phone so things didn't work out.

I have Windows 7 64 Bit so I don't know if this will be the same for Windows 8, but I had to manually go into Device Manager, find the part of the phone that hadn't installed correctly (which has a exclamation mark on a yellow background over it), manually select it then choose 'update driver', pointing the install wizard to where I'd extracted the vcom driver. As Longo213 says, the phone should be switched off during this part of the process.

It's worth getting Flashtool up and running to make sure you can make a FULL backup of your stock device before you do anything else. This is a more thorough backup than a Clockwork Mod backup because it is backing up every partition. You can find more info in various places, including Gizbeat.com and also on their YouTube channel.

Here's a starting point http://www.gizbeat.com/3105/new-version-of-sp-flash-tools-released/
[Device Reviews and Information] Ouzo:
When I get a second I'll try these parameters in the stock build.prop and see what happens. I guess if the file size of images gets bigger I'll know it has worked. To be honest I've no idea if it will work on a stock ROM. I'm feeling rather ignorant at the moment!

*EDIT* OK, so I just sat in my garden and took a couple of photos, then added the above to the build.prop and did a cold boot. The photos actually looked slightly less detailed and the file sizes SHRANK by about 1MB after the changes. Next I tried deleting:

ro.media.dec.jpeg.memcap=8000000

ro.media.enc.hprof.vid.bps=8000000

This increased files sizes to about 1MB above the first round of changes, and slightly larger than stock, but I don't see much improvement if any to be honest. Maybe I need to experiment some more first.... I've just looked at the images on my PC and I can't see any improvement at all. Perhaps a sunny day isn't the right way to test out the changes.

The removal of persistent debugging notification does work though :)
[Device Reviews and Information] mite_jan:
these commands limit the photo and video to 8mpx

dont forget that all those phones with 12-13mpx are using 8mpx hardware cameras that with interpolation (software mechanism) goes to 12-13mpx

so i guess thats why he limited it to 8mpx
[Device Reviews and Information] Ouzo:
Is the sensor in the G4S only 8MP as well? It would explain why details are muddy if ours is using interpolation.
[Device Reviews and Information] lycanwrath:
Hello, thanks for the links and instructions, I installed the deodexed rom but gravitybox will not launch, is that normal?
[Device Reviews and Information] Ouzo:
Sorry, I haven't tried the deodexed ROM yet. Maybe someone else can pitch in. Do you need to update your binaries to get it to work?
[Device Reviews and Information] lycanwrath:
I 4got to reboot my phone, gravitybox is now working just fine!!!

You should try the deodexed rom its really nice :)
[Device Reviews and Information] Ouzo:
Glad you got it working.

Yeah, I've been very lazy this week. I really should make a nandroid backup and start trying a few ROMS out. I've already downloaded the deodexed ROM so I can mess around with it.
[Device Reviews and Information] dbanas:
Were you able to flash the ROM in jiayu.es? I just can't... Don't know why.

If I use the jiayu.es app, the phone reboots, pretends to be loading or installing something, but when it turns on again, it's my old ROM with all the apps and all (I didn't do the wipes in case something like this happened).

If I try to do the same from the CWM recovery, it just says "installation aborted". That with the ROM for jiayu G4S in the jiayu.es app "SPG4S20140418-120537". I guess I'll have to learn to use flashtools? seems like kernel incompatibility.

Don't want to diminish Jiayu but everything was so much easier with Samsung xD

My problem is that, the phone reboots now and then with the stock ROM it brought from China. It's not a full reboot, I mean, it doesn't turn off and then on, it doesn't even ask me for the SIM pin code when the home screen appears again, I think it's called an android reboot, or something like that. The point is, I wanted to see if I could fix it with a new ROM, or if I should send it back to Jiayu or the shop for repairing...

Some advice?

As always, I'm deeply grateful for the work you people do in this an other forums, I'm new but I hope I can someday also be of help somehow =)

PS I: I also have the problem with Facebook that has been commented in this thread, and I "solved" it as well using an older version of the app.

PS II: My phone is rooted, so that shouldn't be the problem either...

thanks!

David

---------- Post added at 09:12 AM ---------- Previous post was at 08:48 AM ----------

Ok, somehow I forgot how to read. The ROM in the jiayu.es app is described as "prepared for SPFlash Tool". Anyway, if anyone knows something about the random partial rebooting, or knows how to get windows 8 to detect the phone via USB, (drivers for Windows 8 doesn't seem to be popular), you'd save my life =)

David
[Device Reviews and Information] Ouzo:
So far the only ROMs I have tried have been the 'official' ones that you have to flash using SPFlashtool.

Yes, the ROM available in the Jiayu.es app at the moment needs to be flashed using SPFlashtool - it's not CWM compatible. Sorry, I didn't try with the Jiayu app itself, partly because I assumed that it could only flash CWM compatible ROMS and partly because I wanted to use SPFlashtools to make sure I had a full backup of my phone.

Yep, it's a very different process to flashing ROMs on Samsungs or HTCs, but it's ok when you get used to it. SPFlashtool is also very powerful from the point of view that it can write to every partition on the phone.

I haven't had any spontaneous reboots or soft resets on the stock ROMs at all. My guess is that you have an app that is causing it, but this is just a guess.
[Device Reviews and Information] kolibri.croatia:
I tried this jiayu.es rom through sp flash tool. During this i lost all apps and photos. And this is as expected.

But if I try to flash some custom rom with cwm will I again loose all my apps and photos?
[Device Reviews and Information] Ouzo:
Really sorry, I haven't used Windows 8 at all yet. Does it still have device manager where you can 'see' partially installed devices? Does Windows see the device when it's powered on and connected as USB Mass Storage or MTP?

Just found this here on XDA http://xdaforums.com/showthread.php?t=2491246 Haven't read it yet. There seems to be a video walkthrough on YouTube too.
[Device Reviews and Information] Ouzo:
From memory you can flash a ROM from CWM 'over the top' of your existing ROM and all your apps and data will remain intact BUT this isn't always the case and it may cause compatibility problems, especially if, for example, you are on a stock ROM now and you are going to flash something other than stock.

This is what I would do if I were going to flash a ROM from CWM recovery. Firstly, before even booting into recovery, I like to make a backup of my internal SD card to my MicroSD card (or at least the Android folder so that I don't have to download large game data files all over again). I don't sync my contacts with Google so I use the contacts app to make a backup and store it on my external SD card. I also use 'Playlist Backup' to backup my playlists too). Next I boot into recovery (I use the Mobile Uncle Tools to do this - make sure you have also backed up your IMEI number using either Mobile Uncle tools, Jiayu.es app or MTK Droid Tools on your PC). In recovery I make a nandroid backup which is written to my external SD card. This way, if I don't like the new ROM I can revert to how everything was before hand with absolutely everything as it was before. Next from within CWM, if I am flashing an updated ROM rather than a completely new ROM I clear cache and dalvic cache then flash the new ROM. If I were going to try a completely different ROM I would wipe the phone/factory reset from within CWM, then flash the ROM. I still haven't flashed a ROM on the G4S using CWM yet, but this is what I used to do on my HTC Sensation etc in the past.

Sorry, the above was a ramble:

1. Backup anything you need to save on your internal SD card (photos, game data, downloads etc)

2. Boot into recovery - make a backup

3. If flashing a very similar ROM to what's already on you phone, clear cache, clear dalvic cache and flash ROM (I'm assuming you have already downloaded a ROM and put it on your memory card ; )

4. If you are trying a completely different ROM, it is probably best to factory reset from within CWM, then flash the ROM.
[Device Reviews and Information] dbanas:
Thanks Ouzo! I will try that and I'll comment something here if I achieve something ^_^
[Device Reviews and Information] kolibri.croatia:
Thanx ouzo! I m getting preparred for one of miui ports... Which would be the best (with less bugs) until now?
[Device Reviews and Information] Ouzo:
I don't really understand how the opening post needs changing.

I've repeatedly said the phone is fantastic value for money. As you have confirmed yourself, there is a caller ID bug, simple as that - this matters to some people so it's only fair to warn people. The camera is weaker than my HTC Sensation or Galaxy Note 2 so from that point of view the Jiayu is not a cheap replacement for an older flagship phone (which is fine, but I didn't want to create a false expectation of its ability). GPS is awful for a lot of us either some or all of the time - perhaps some of us are just unlucky? For me data being on or off makes no difference.

Again, I don't really see what needs changing. At least I took the time to put some information out there to help people inform themselves before buying, eh? Of the tens if thousands of people who have read this thread only a handful of them took the time to hit thanks on the opening post. Lol. By all means start your own review thread, post the link here and I will happily put the link to it in the opening post :)
[Device Reviews and Information] LuxZg:
Sorry, didn't mean to sound as a critic or unthankful or that opening post isn't true anymore :) I ment something else, opening post is full of useful information, but there is more and more comming every day. And I'm sure you've noticed this is first and foremost Jiayu G4S thread on the XDA, so people will look in this thread first, your opening post first. I'd just like to support you in filling all the small gaps as new info comes around. Seems like a perfect place to add new stuff about this phone so everyone reads it :) That's all!

As for thanks, I just gave it.. sorry, but most people don't have a habit of pressing "thanks" buttons on forums, even though I admit it should become one way more than pressing like on FB. I'll work on that ;)

I'm on work now, but when I get time later today or during weekend I can post a few suggestions for OP edit which you can use or ignore, it's your thread after all :) Nothing major though, that's for sure! But a few helpful hints and tips for those that are either looking to buy this phone or have recently bought it and want to get to know it a bit faster :)
[Device Reviews and Information] Ouzo:
Ok, cool. I'm more than happy to edit the OP. Whatever everybody feels is the best way to describe the phone to prospective buyers is fine by me :)
[Device Reviews and Information] Mbariah:
Has anyone tested the Rainbow Rom by Team force?
[Device Reviews and Information] sparky boi:
Anyone else having a problem with there Data internet connection..mine keeps dropping and constantly getting "error 503 server unavailable " or along them lines.

Its not the network provider as my partner is on the same network and she has no problems.

Just want to know if anyone else has the problem so I can see if its the phone.

Sent from my JY-G4S
[Device Reviews and Information] Ouzo:
I've never had that message. What ROM are you using? I'm still on the stock April ROM.
[Device Reviews and Information] Mbariah:
Mine works okay...both sim1 and sim2,haven't noticed any issue with data connection..Did you try another browser e.g Chrome? or maybe you have wrong network APN settings? am also on 4.2.2 official
[Device Reviews and Information] sparky boi:
Hi.

Still on the original ROM Junes I think . Haven't flashed any other ROM on this.

Sent from my JY-G4S

---------- Post added at 05:15 PM ---------- Previous post was at 05:10 PM ----------

Tried all browsers,but still the same thing on all of them,pages would sometimes load but not correctly,so its getting some sort of internet connection . Its like its dropping constantly for some strange reason.

Sent from my JY-G4S
[Device Reviews and Information] but-888-:
Any firewall or adblockers installed? If so try disabling them for testing and see if it works afterwards
[Device Reviews and Information] sparky boi:
I have avg .I'll disable it and see how it goes.thanks

Sent from my JY-G4S
[Device Reviews and Information] stu1690:
I have been told by a friend that most Chinese phones come with spyware/malware on them. Is this the case with Jiayu devices?

Edit

OK so I have spent around 4-5hrs reading every post in this thread and I still have a few questions before my g4s arrives in a couple of weeks.

I will not be using the GPS or the camera much so I am not too fussed about them. I will need the sound quality to be pretty good though so am I right in thinking I should install viper4android to improve the sound quality and do I need to install with or without root? I used beats audio on my sk17i and it helped with the quality.

The callerid will piss me off I know it will but I will change my contacts so they all have both local and international codes under each contact to solve this. Is this correct to sort it.

I don't really care if I am on jb or kk as I seen minimal difference in the change on my Nexus 4. Will changing to the polish or Borx gold v3 ROM benefit me in a great deal or is the stock OK for what I will need it for?

Regarding Trojans/malware. I read there are two on the stock ROM that comes on the phone from Jiayu, those being the fonts and another (I can't remember what I will have to check again, sysmarket?). Can these be removed without root access with ES file explorer?
[Device Reviews and Information] pozzeco:
Flash player

How to play youtube videos e.g. with Opera classic browser?
[Device Reviews and Information] but-888-:
[MENTION=6014427]stu1690[/MENTION] i would switch to borx v3,i tried a lot of the roms at the beginning and got "stuck" on this :), no malware, overall Performance outstanding for me, i would directly flash this rom out of the box
[Device Reviews and Information] Leasir:
I have the same problem, and i also tried to install from android system recovery but i got "installation aborted" with all the custom recoveries

any idea?

ps: actually i have no idea which version i got, my rom is official 20140704. Where can i check if it is V1,V2,V3 etc?
[Device Reviews and Information] Mbariah:
Okay so i'm looking to update to KitKat from 4.2.2 official and was wondering which is the most stable rom and well optimized rom?
[Device Reviews and Information] sparky boi:
So I uninstalled avg,but no luck,still the same problem. Really baffled as to why this is happening

Sent from my JY-G4S
[Device Reviews and Information] but-888-:
I would suggest to make a factory reset, this solves most times weird errors which are non recreatebel,

You can backup personal data with Titanium Backup prior

Cheers
[Device Reviews and Information] stu1690:
I received my new 64gb microsdxc (class 10) Samsung Evo card today and i would like to know if i can start adding my music collection to it now or am i better waiting until i get my phone in a week or two to format it in the phone.

If i can format it ok on my pc now what format should it be, FAT32?