yashsingh1/xdaforums huggingface dataset:
[Upgrading, Modifying and Unlocking] lasslax:
As I explained before: the upper right corner: WiFi / GPS combined as ONE antenna.The 2 pins in the middle are for the NFC.

At the bottom you find Bluetooth and GSM and UMTS.

It´s actually written on the cover, not very visible, but still.

---------- Post added at 03:45 PM ---------- Previous post was at 03:40 PM ----------

Hi,

keep on experimenting with those foils and please inform us about your findings.

My bets shot is 7 cm not longer or if shorter, then the half of it, 3,5 cm.

It´s also true about the external director, which I find giving the best result.

I also found how to make the director point away from the phone, with the result of 38-40 SNR ont 3-4 satellites at the time, and 2 meters resolution. I´ll publish som picture of it later.
[Upgrading, Modifying and Unlocking] lasslax:
OK, here is my best this long

The first picture is the SNR I've got, the second is how I did it.

I use a slightly modified Note 3 car holder.
[Upgrading, Modifying and Unlocking] Haribo68:
Can this help?

ebay.de/itm/like/221350809309?lpid=106&_configDebug=ViewItemDictionary.ENABLE_PAYMENTS_IN_HLP:true&hlpht=true&ops=true&viphx=1

I dont no in english, is very bad :)

You can paint with this a antenna on the inner side of the backcover and is silver.

The mostly function with this is to repair the lanes on the Backwindowheading in a car.

PS: You must type "www" for the link, its forbidden for me to post links :(
[Upgrading, Modifying and Unlocking] lasslax:
Most certainly it would be worth to try!

I would love to try it painted on a copper foil, enhancing the coppers conductivity specially in high frequencies. ("Skin effect")

Also, I believe that the antennas at the bottom (Bluetooth and GSM) are made as a painted line of silver.
[Upgrading, Modifying and Unlocking] Take-kun:
Do you keep losing signal while using GMaps for ex.? Did I do my modification right? I cut out the line from foil, about 0,5cmx6cm, wrapped middle pin in it and put it out of the frame. I placed phone on a window for a while, no better results, but I will try it out tomorrow.
[Upgrading, Modifying and Unlocking] Haribo68:
It gives with copper too.

I have found it and buy it.

When you sure tell me what pin realy the right pin is for GPS then i make a try.

I was sooo agry when i must disassemble my phone. I think everytime, one error and this is trash :laugh:

I have try the GSM and UMTS without the Plate with the two speakers and the antenna lanes.

Without this the GSM goes down to -120dbm in my bathroom.

With this, also in normal use, its goes down max. to -107dbm.

So, you are on the rigt way and i understod this.

In the Backcover are 2 Antennacontacts and on the Mainboard on top right are 3 contacts.

It´s possible, ZOPO has no antenna for GPS included in the Backcover?

For what is the third contact that is free?

Sorry for my bad english. I can not so good articulate what i mean.
[Upgrading, Modifying and Unlocking] lasslax:
No, I don´t think you do it right. The size is actually very important. use 70 mm or 35 mm, 60 will not do well.

Also, it is way too wide you use, don´t exceed 2mm!

And again, this is just a little improvement, the big one is in the director, which supposed to be a few millimeters behind, 70 mm lång, 10-12 mm wide, and its upper corner 5mm over the volume rocker.

If you use a carholder, try to make the director point away from the phone, as you see on my pictures. Please follow the instructions to achieve my results. Or experiment on your own and find out what fits best for you.

---------- Post added at 08:15 PM ---------- Previous post was at 08:11 PM ----------

You´ll find all the answers if you read my first posting #531 yesterday on page 54.
[Upgrading, Modifying and Unlocking] Take-kun:
35 or 70 mm including the pin wrapped part of foil?

Do not exceed 2mm, can I flex bolder foil to get it thinner? I think that you did that when I'm looking on your photos.
[Upgrading, Modifying and Unlocking] lasslax:
I guess you can wrap it. The physical size is the important, I don't think it matters how many layers. But I just guess, I did not try. I have single layer.
[Upgrading, Modifying and Unlocking] phbjoh:
Hi,

I installed CWM 5.5 on my father in law Zopo 998 and did a backup, after that installed the Xposed module and is stuck at the Zopo boot screen. Found this thread and realised that Xposed is not working on the 998. I can't get it to boot into recovery only to the boot menu (in Chinese so I cant read what it says).

How where you able to boot into recovery? If I can get there I can install the backup....or any other ways to get around this problem?

Managed to boot to recovery through adb using "adb reboot recovery" and restored the CWM backup. Now its working again but still the issue with national roaming.
[Upgrading, Modifying and Unlocking] khernitzz:
For some reason, it looks like that I'm the only one who find this bothersome. Oh well -- moving on.
[Upgrading, Modifying and Unlocking] victorsrg:
If it was only that...in my phone some apps were not even displayed. Back to MIUI I went...takes a lillte getting used to but overall it's the best rom, once you replace the stock launcher with something else. Note 3G only works for SIM1...
[Upgrading, Modifying and Unlocking] jjkraak:
I only notice it sometimes, so for me it is not a big deal. Maybe it is only the first time after rebooting?
[Upgrading, Modifying and Unlocking] zorroloko:
I laughed at that solution, it seemed all very silly, but I tried it! and IT WORKS!

What I've done is put the time to 30 minutes in battery disable the option of limiting the power. Now I'm in the middle of my house and I have 5 green 30seconds satellites!! THANKS BUT other programs can not browse
[Upgrading, Modifying and Unlocking] tommie.r:
Gps tweak.

Ok, here's a pdf. that shows my atempt to copy lasslax tweak. Thanks for sharing your efforts lasslax. :) I didn't get your fabuolus results but i haven't tested your director antenna much yet. I took a pice o foil in the same size as your specification and fiddled around with it behind the phone as you specified, and it does help the signal to be stronger.
[Upgrading, Modifying and Unlocking] lasslax:
The real improvement you'll get will be with the director. Just make sure that the upper part is close to the phone and the other end points away somewhere behind. The improvement will be dramatic.
[Upgrading, Modifying and Unlocking] ohad129:
You know i just dont know people all you have all day long is to navigate?! Stop with that problem go to work and talk with the phone ! Send email atc or all the other are suck as this phone navigator!?????
[Upgrading, Modifying and Unlocking] tommie.r:
Ok, thanks lasslax. I will try it in the next couple of days and get back to you...
[Upgrading, Modifying and Unlocking] tommie.r:
Test drive

Well, i must say that i'm amazed. Building a director antenna actually works. I got a fix within 5 meters inside my house, pretty neat. What i did was to cut an old creditcard in two pieces aprox 10 mm wide, glued them together and covered them with aluminum foil. I also bent it in somewere around 45 degrees. I then tested how to place it for best result, and then i mounted it on my car holder. It's ugly as hell but i'll fix that later. I took my car for a spin with sygic and it didn't fail once, it worked flawless.

Lasslax your'e the man, you have saved me the trouble of bying a car navigator. Thanks a lot for sharing your work...

Tommie.;)
[Upgrading, Modifying and Unlocking] tommie.r:
More pics... If one does not want to dissassemble ones phone, try the director antenna first...
[Upgrading, Modifying and Unlocking] pjd64:
Saying goodbye...

Well, my HTC One just arrived and I took it on a field test with Ingress. With proper A-GPS support and GLONASS I am again able to deploy resonators at exactly 40 meters from a portal in Ingress. :)

[MENTION=5543454]Take-kun[/MENTION], you wrote you had a bad break when you disassembled your zp998, mine no longer has a screen (the original is broken and the replacement was defective so I returned it after winning a claim with PayPal), so if you wish I can mail you any part you need from the remainings. Just pm me with your address.

I also have a great silicon case (Zopo original) I can offer you, it is very effective to prevent the phone slipping out of your hand and it is excellent to make the phone overheat and burn out. ;)

I'll be migrating to the HTC One related forums on XDA, so good luck to you all and if you are still in the phase of wondering if you should buy this phone, !!!DON'T!!!

Regards,

Paulo
[Upgrading, Modifying and Unlocking] lasslax:
You are most welcome. And yes, begin with the director, it might be sufficient for those who only experience minor problems with the GPS.
[Upgrading, Modifying and Unlocking] Sathelp:
Had to give up and buy another because of the bad GPS

It is a shame as this phone is really good but the GPS is just so bad that I have had no choice then to admit defeat and buy a THL T200 to use.

I hope that the kitkat rom has some changes to make the GPS work but if it is a hardware issue and not a kernel/driver problem, I will not be coming back.

It is a shame that Zoppo do not run a testing program with some worldwide users. I used to do this for Acer (UK tester) and this GPS issue would have been picked up by testers before release for sale, not buy the very people you want to sell the phone to. I am open for testing with you Zoppo but as you never read the forum, I don't hold much hope.

I will never be buying another Zoppo without some very good reading up first. Such a shame.
[Upgrading, Modifying and Unlocking] tommie.r:
I suppose it's safe to say that the gps sucks because of hardware problems. Depending on what purpouse you want to use your phone to navigate, you could try to make an external director antenna as made in previous comments. It would be lovely to se if that helps before actually dissasembling the phone and installing an extra antenna. The external director realy helped me wtih turn by turn navigation in my car. But then again i agree with you, one should not really have to do such things to make it work. But with the external director antenna i think i can live with my phone for now, it was the gps that was the big issue for me. Other than that i like my zp 998.

Anyways good luck to you. /Tommie. :)
[Upgrading, Modifying and Unlocking] javikani:
I do not think the gps problem is a hardware problem. Since playing with three options mobileoncletools program, the gps works perfectly. What are two things happens. If it is true that it costs to heat (not always). And second that the google map is switched off when the screen turns off and have to start over each time. There is a Spanish ROM.That solves this problem. Zopo This is a great phone.
[Upgrading, Modifying and Unlocking] tommie.r:
A bit cryptic, can you specify exactly what you did in mobileuncle? I think there are people who might want to repeat what you did, if you care to share. Do you run this spanish rom yourself? I haven't tried it my self, i'm on marsapa rom v8 now. ;)
[Upgrading, Modifying and Unlocking] javikani:
At the time, I did it with mobiluncletools. Although I have now found that it is best to do with "gps status" program. In restoring and tools ... download new data for a-gps for you region....

The spanish rom with gps OK is..zopo-998-pureaosp

In needroom.
[Upgrading, Modifying and Unlocking] lasslax:
If you looked up these 57 pages, we all did that, but the GPS did not get better. The problem as I explained is the antenna, and needs some external modifications to deliver strong enough signal.

No tweaks, no Roms can do that.
[Upgrading, Modifying and Unlocking] tommie.r:
More gps...

Here's som pics on a very simple but fuctioning director antenna. Anybody can do something similar.
[Upgrading, Modifying and Unlocking] Take-kun:
Ok, so I bulit a director as you written in my filpcover. Still long waiting for GPS lock - about 2 minutes. GPS signal is better from 15 to even 30. But I still suffer from some software problem, GPS drops signal all the time. About once a minute. While playing ingress when I notice that I'm not moving I have to swith to the GPS Test or Engineer Mode for a while. It's terrible! Don't you have this? You write like bulding director fixes all the problems.
[Upgrading, Modifying and Unlocking] tommie.r:
Have you modified the internal gps antenna as in previous pictures? Perhaps the external antenna only isn't enough? I know little of these things...

I only had time to take a short testdrive, about a quarter of an hour and it worked perfect, but then again the director i built for the carholder is a little bit larger than my beer can antenna, so size might matter. I took a little walk this afternoon to see if i could navigate to a nearby geocash with c:geo app, but the compass was of several times along the way, i know this because i located this cash before so i knew where it was. At the cash location i was of by eleven meters alltough i had a fix about 5 meters accuracy. In gps test app the signal strength goes up and down all the time. I'm new to this so i don't know if it's normal or not. Signal strength varies with the angle of the antenna towards the phone to, so you have to fiddle around a little to find the right angle. The placement of the director is also crucial, it took me a little while to find the right spot on my phone, perhaps it varies from one phone to another?

As for ingress i havn't played it so i don't know what it's about. Perhaps it matters where you live to? I live in southern sweden...

Let us know of your progress and good luck to you, i shall test it further to and report back here as soon as i can, allthough it might take a few days.

Question, how stable is the gps signal suposed to be? Anybody who knows?
[Upgrading, Modifying and Unlocking] Take-kun:
Dear friend,

I would like to get a plastic frame that we all unscrewed many times to get to motherboard, if you've got black Zopo. Please contact me on pm if it is.

I'm using the original flipcase and don't have any overheating problems for now.
[Upgrading, Modifying and Unlocking] tommie.r:
Even more gps.

I took a walk and traced my track, doing some experimenting along the way, as posted screenshot will show you. It seems the gps drops signal when screen turns of. When screen was on all worked fine. First time i turned screen of it went haywire, but not the second time, perhaps the second time it was to short a walk to matter.

I shall do some more testing later on.
[Upgrading, Modifying and Unlocking] lasslax:
GPS antenna

I experimented a bit further with the antenna to improve the GPS, and succeeded with a form and size that may do without an outpointing piece.

Notice: this is NOT as good as the one pointing away, but might be enough for navigation in a car, or as walking on a street.

Look at the attached pictures, they explain everything. Follow the sizes exactly. The long foils are always 70 mm long, the internal one 2 mm wide, the external 5 mm wide. The rectangle should be 35x35 mm and placed as on the picture. It should NOT touch the cameras metal frame. Also you should cut off the corner in 3 mm as on the picture.

Copper foil would be the best, but aluminium foil can be sufficient. Use self-adhesive foil, it's easy to apply.

You can expect your WiFi signal to improve about 10-15% as well.

Also important: depending on what you use the GPS for, as some of you need it to some games, you might need some tweaking of the system, to do a faster calculation of your position. Download Antutu CPU Master from Google Play, and set the governing to "Performance".

It will drain your battery a bit faster, but will give you a more stable GPS.
[Upgrading, Modifying and Unlocking] lasslax:
The second image with a bit better quality
[Upgrading, Modifying and Unlocking] tommie.r:
Nice.

A very neat solution, shall give i a try, does it work in your car to?

Having an external antenna i a bit clumpsy after all...

I'm impressed.:svetius:
[Upgrading, Modifying and Unlocking] lasslax:
I only tested briefly, it seems to do the job, although the external gives a higher signal.

Remember to keep the sizes close to the specs, specially the internal part. The surface of the foil should be about 142-144 square mm for the right frequency.

Also, you can combine this two. Also, I think your beercan thing is a bit out of size, but of course if it works for you...:)

To explain the role of the external part: normally, when sending-receiving radio waves you want a unidirection antenna, that receives signals with the same amplitude from all directions, since you do not want to direct your device to the sender.

It´s not the case with satellites. There you want the highest gain from the zenit, and lowest from the horizon, according to receive direct waves from the satellites and no reflections from buildings an other objects on the surface.

For a unidirectional antenna a long piece of wire works, for one directed upwards you supposed to have trapezoid form. Unfortunately you can´t keep the impedance constant on a trapetzoid, the closest you get is a rectangle, with its corners cut.

I´m waiting for delivery of the copper foil I ordered, when in hands, I´ll experiment further with that. The next I want to try, if shielding the short lead from the antenna connector to the preamplifier could lessen the noise and improve the SNR.
[Upgrading, Modifying and Unlocking] tommie.r:
Ok, i tried your solution and it didn't work for me, it actually dropped signal. So i fiddled around again and found a solution that worked for me. I extended the internal antenna first to but it didn't work out, so i shortened it again.

My solution ended up like this. I cut your square away, leaving only a strip of foil size 70mm long and 5 mm wide. First i put very close to the aluminum frame and the signal got better. Then i tested to see what hapaned i i connected it to the frame. Gues what, the signal improved significantly... Shall test it for a whlie to se how it functions.

By the way, is there a way to ceep gps on when turning of screen? Gps stays on when connected to charger, but nut without charging.
[Upgrading, Modifying and Unlocking] tommie.r:
Seems i can only upload one pic at a time from my ipad...

The foil squezes to a tight fit when i mount my silicone case....
[Upgrading, Modifying and Unlocking] dragsterman:
Shield the NFC plugs

What do you think could we increase the SNR values further if we would shield the 2 NFC antenna plugs with just a piece of paper ahdered on the plugs of the NFC antenna on the back cover?

I am asking this becasue somebody wrote this NFC shielding solution before, so we could combine it with your solution.
[Upgrading, Modifying and Unlocking] lasslax:
It was probably me who wrote it...:)

Sure I tried, but it did not give any significant benefit. The way I have it now is second best, still the antenna pointing away from the phone gives the best SNR.
[Upgrading, Modifying and Unlocking] lasslax:
Looking at the location of the foil, my guess is that you did not copy my solution, and that can be the reason you didn´t reach my results.

On the other hand, the SNR values you´ve got are amazing if they are from indoor, and pretty good if outdoor. Please let us know which?

I´m also puzzled abit of that you wrote. I have a black phone and its frame is definitely not metal, and not conducting. Are you sure yours is metall/conducting???

Anyway, I am happy it helps you, hope it inspires others to solve the GPS problem, since I don´t believe ZOPO will do a rats ass for us who already bought the phone. It is very likely that it can be the end of ZOPO as a phone provider, loosing the consumers faith.

Keep up the good work, and inform us about your findings!
[Upgrading, Modifying and Unlocking] bourico:
My Zopo 998 arrived today Yeepee

After my first order was lost, then cancelled, then reordered, It finally arrived thru DHL one hour ago... in black ...with the gift package :o
[Upgrading, Modifying and Unlocking] bodzio3333:
@up

I envy you that you already have your phone.

My order status for a few days is the same - Processing :(
[Upgrading, Modifying and Unlocking] BadCluster:
Request to release the kernel source code

Dear Zopo fans ,

I've read that the developers are angry with many Chinese manufacturers because thay not release the kernel source code for their phones.

With your help, perhaps, we could change that situation and help the developers to develop new Rom or fix any bugs .

How? Quite simply !

For anyone who has a Facebook account:

Click " Like" on the official page of Zopo :

https://www.facebook.com/officialzopo?fref=ts

Then copy this message (if anyone knows a better English of mine, I am ready to change it):

and paste it in the Zopo official page.

For those who did not have a facebook account, there are other methods.

Go to the official page of Zopo, in the section contact us : http://zopomobile.cn/contact-us/

Or write a reply message in this topic present in their official forum : http://zopomobile.cn/forum/viewtopic.php?f=4&t=372&p=1732#p1732

When in doubt, made ​​the request in all three ways

I hope that you will give your support to this project !
[Upgrading, Modifying and Unlocking] ghost45:
[MENTION=1007992]everyone[/MENTION],

relased new firmware in first page!

:good:
[Upgrading, Modifying and Unlocking] BadCluster:
any change log?
[Upgrading, Modifying and Unlocking] ghost45:
Hi,

first page (software section) updated!!

:D
[Upgrading, Modifying and Unlocking] sheridan2000:
badcluster. have you posted on their Facebook page?

Seems there are issues with correct full root access and gesture control...

http://forum.zopomobileshop.com/forum.php?mod=viewthread&tid=1811&extra=&page=1&mobile=yes
[Upgrading, Modifying and Unlocking] KamilloM:
Hello!

Built-in SuperUser mode does not work. Applications do not get "permission".

After uploading Framaroot (http://xdaforums.com/showthread.php?t=2130276) nothing happens, because then you have to install SuperUser and the council can not do (anything but me did not work), because it is built-in system that does not work.

In addition, the function (Feverish Touch- http://downloadcustomrom.com/zopo-zp-998pure-octa-core-processor/gesture-zopo-998/ ) does not work...

My system: 4.2.2 - MOLY.WR8.W1315.MD.WG.MP.V21.P8, 2014/01/02 15:19
[Upgrading, Modifying and Unlocking] ghost45:
Respect the Rules!!!!

Respect the Rules friend!

Do not write link to esternal forum!

This thread could be stopped from moderator and The Admin!

I don't want again to be called from the Forum!

:mad::mad:
[Upgrading, Modifying and Unlocking] BadCluster:
Yes I've write ;)

Inviato dal mio GT-I9100 utilizzando Tapatalk
[Upgrading, Modifying and Unlocking] KamilloM:
Unfortunately, Manufacturer still silent on this issue and do not know when or even if the software update will be to operate all advertised functionality .... :(
[Upgrading, Modifying and Unlocking] Cerberus$:
warranty

Hello everybody.

What about warranty and oppo service?

im from Greece what i have to do if my oppo brik,burn or whatever else?

i must send it in China?! :eek:
[Upgrading, Modifying and Unlocking] ghost45:
Hi friends,

i have update new video in fist page!

:laugh::good:
[Upgrading, Modifying and Unlocking] adonis75:
How to root this Zopo ZP998?

Superuser on advanced settings don't work...

Imatur firmware for this phone...
[Upgrading, Modifying and Unlocking] frontline3k:
I'm also interested in this phone, but I'm waiting until there is some ROM development for this model.

So far, ZP980/C2T seems to have a few ROMs available (MIUI, GizROM, Vondroid).

Have a nice day,

/frontline3k
[Upgrading, Modifying and Unlocking] killer313:
I'm interested too. Do you know how long are we gonna wait for any ROM?
[Upgrading, Modifying and Unlocking] samos123:
I bought the phone in China, the Chinese version which comes without Google Play store and relevant services.

The model says it's the 9520 (小黑2) though, but the specs are exactly the same as ZP998. Does anybody know if it's possible to install the international rom of the ZP998 on the Chinese 9520 model? And if so how to do this?