Hello everyone. I don't know if it was discussed earlier but I was searching on xda and google and found a lot of questions about nfc but no exact answer. It seems to be a lot of people across the internet meet the problem with NFC being either greyed out or refusing to turn on at all if not on stock then rooted rom etc. I had a problem with nfc since I bought one with cracked screen on ebay and replaced the screen. A friend of mine was complaining about nfc and scratched lens on camera of the back frame. I ordered a new frame from international galaxy s3 and it didn't want to fit perfectly but nfc started to work. Before replacing the frame I tried to root/unroot the phone, restored again back to factory mode and replaced the battery but nothing worked. First test if it's going to work for you.
1. Remove battery back cover, battery, sim-card, sd card
2. Unscrew all the screws from the back frame and remove the frame.
3. Put the battery back, turn on the phone and test nfc without the frame.
If nfc started to work then your problem is in the frame. It seems to be verizon is using a different frame from other galaxy s3 models.
All you have to do is tape the contacts on the phone at the bottom:
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And tape the contacts on the back of the frame as well so they don't short each other:
On the second picture you can see the difference of the contacts between frame from international (on the left) to verizon (on the right).
They are different and contacts shorting each other. International frame does not sit quite right and holes for battery clips are smaller also so the battery door does not properly close:
why would my nfc short out after rooting or flashing a rom
hackit219 said:
why would my nfc short out after rooting or flashing a rom
Click to expand...
Click to collapse
That I don't know. As I said I bought the phone broken and replaced the screen. NFC was working for a few days then every time I was turning it on it was in gray color (like disabled) but z-device showed me that nfc is in good working condition. While searching throw forums on google I found out that quite a few people did have the same problem. Most of them simply sent the phone back by the warranty. You can see that connectors are totally different for verizon version comparing to others. And it was working perfect when I switched the frame from international version but it just simply did not want to fit the right way. That's why I thought it would be nice to ask people who have the same problem if that would be a solution. Most of the time I read things like rooting from 4.1 makes this problem and rooting from 4.0 solves it.
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Hi i have to change the touch panel due to a big scratch,anyone here know if i have to disassembly all the phone?Or else someone with a service manual?
My phone was out in the rain for a bit so my digitizer is all messed up. Only thing I can do is touch the bottons on bottom. Not much function in the touchscreen besides that. Have ordered a new digitizer and will hopefully get it by the weekend or next week. Can report back how it goes with the disassembly or have you already done yours? Please give a report on how to do it if that's the case.
I m still waiting for mine from hong kong.look s like someone else had changed the syntetizer in the forum,but i had no reply to my question
Ok. I guess we'll have to wait and see who gets his first. Whoever does though it would be nice with a report on how it went.
Hi i ve received the touch panel,but i tried to disassembly the phone,but i can not get the cover to open.I unscrewed the 5 screws on the rear but the cover is as strong as before.Have you ever tried to disassembly our phone?
And the touchscreen i received it s not the new one but the old engineering example,i think it s the same but i want to try the respone so i can give the seller the positive or negative feedback.The panel differ from the classic one for the acer logo on top right,not at the bottom center,and...there is the trasparent hole near the headphone for the front camera as you can see from this old sample picture
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And this is mine
I read in the screen replacement forum. There are two more screws at the left and right sides of battery house.
Hope that helps. The guy in hongkong that sent me the digitizer sent it by registered air mail first but sent another one by EMS so hopefully i'll have it this week.
Ok i ve found the way by myself,it s not so difficult,i ve seen the two screws after...You have only to pay attenction to not force too much the plastics when you try to open the cover and when you try to detach the touch panel.The best way is to use a guitar plectrum and start to open from the bottom right,for the touch you have to go carefully.Now i ask in the forum if they need a guide with high res photos,because i ve taked pictures with my nokia n95
Well I would be really interested in seeing the pictures. Please do share. How's the new touchscreen working out ?
You can see my guide in the general section,maybe will be sticked.The panel is working good,but it seems a little less sensitive than the official oem one.Maybe the engineering sample is a little different.In plus the light from the touch keys is not diffused good,and i have an hole for the front camera,wich is not present in retail s200.But if you go to the guide you can see pictures
I have now changed my digitizer and thanks to your guide it went pretty smooth. Was done in about 10-15 mins. I got the oem one but the buttons on the bottom is diffuse as you said yours was. maybe i can move the white from the old one to make it nices. Probably won't bother though. Don't really find a difference in response from before the change.
I was doing a screen replacement on a Nexus 5 and a small part from the motherboard fell off.
3 pictures to illustrate the problem here:
http://min.us/mKOC4FQe6F0HI
Afterwards, the mobile connection was a lot worse than before. Now, 2 weeks later, the phone's connection has become unusable and it constantly shows no service. Only very rarely does it have any sort of connection (Edge/3G/H/4G).
Questions:
1)What is the part that came off? (see album above) My knowledge is a bit limited but I'm quite sure it has to do with the connection? I notice there are 3 other parts exactly like this spread over the motherboard.
2)Can I repair it? Do I glue it back on? Do I solder it on? Does it somehow click on? (I have tried if it clicks but this part is so tiny it's almost impossible to really handle
3)Based on my explanation, do you think this tiny part is the only cause? The phone still had some connection at first but it got worse. I'm also planning to order replacement antenna cables to see if that helps.
Thanks in advance!
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In my case.. I had to replace the charging circuit Cuz it was 'broken' as described by the cellphone shop.. It has connections to the antenna.. Now phone is fully working.. Before that though, I tried different sim cards with different companies (bell Rogers and fido) all worked on my phone except my carrier sim card (mobilicity). After replacing the circuit I just mentioned everything works fine. Cost is 25$
Needs solder it's an rf trimmer /radio frequency. It's vital to an ariel of one type or other. If you want to risk a bodge assemble everything except the back and hold it in place with bluetack. If it works I was going to say epoxy it but don't. Get someone to solder it. It's easy to do if you have the skills.
Oh vital it's right way round and has now been turned. There should be a slot for tuning it.
In Vietnam they replaced my front/back glass and the metal frame. The phone looked like brand new, but my GPS wasn't working so I went back. They fixed it but when I got my phone back my front glass was sticking out a bit.
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2 weeks after the GPS wasn't working again I tried flashing back to factory image, various different ROM's/GPS fixes without luck. The apps from Google play all didn't find any GPS signal.
After a few weeks the back glass was coming loose. I took it out and found out they had used superglue instead of adhesive so I had to scrape the paint from the frame and glass. I figured the GPS problem is a bad contact between the GPS and the frame. (like described here: LINK)
When I pulled out my front screen it cracked because it was also super glued to the frame. I bent the pins on the motherboard up a little and but it back in the frame. When I powered it on my GPS was fixed, but I had flickering lines over the screen. When I screwed it back the LED started pulsing blue and the phone is completely unresponsive.
https://www.youtube.com/watch?v=DFVsaNx3B18&feature
I see the LCD's are expensive so do you guys think the problems would be solved by buying a new LCD and frame or does the light to dark blue pulsing mean something different?
Thanks in advance!
Hi just now i dropped my wife's s6 and now the screen is dead, (well, not totally dead cos periodically maybe every 12 seconds giving showing white screen only on the left hand side portion of the screen) and the notification led is giving off dark to light blue light. Other than that, the phone is completely unresponsive.
I tried the hard reset method and try going into download and recovery mode to no avail. I was thinking it maybe caused by the cracked screen. The phone has had a cracked before i dropped it and it was fine. When i dropped it, there is no new crack.
So did you replace the screen and it solved the problem? Thanks in advance.
Here is what happened:
I got a week old phone with a broken screen.
Decided to try to fix it so I ordered a spare screen from eBay. After 2 Weeks display finally arrived so I changed it my self by following a YouTube tutorial.
Everything worked flawlessly except new display had 4 dead spots on a touch screen so I complained and got a new one.
I changed it again and this time screen was OK but I can't get GSM signal, so I dissassembled it and assembled once again but still no change.
Tried different sim card-nothing happened.
Tried to register network manually but it doesn't work.
Plane mode ON and OFF is not helping neither.
Phone recognise a card, asks for PIN, PIN OK but still no signal.
Anyone has an idea is there a way to improve or boost GSM signal? Or to fix "receiver"?
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sour_tasty said:
Here is what happened:
I got a week old phone with a broken screen.
Decided to try to fix it so I ordered a spare screen from eBay. After 2 Weeks display finally arrived so I changed it my self by following a YouTube tutorial.
Everything worked flawlessly except new display had 4 dead spots on a touch screen so I complained and got a new one.
I changed it again and this time screen was OK but I can't get GSM signal, so I dissassembled it and assembled once again but still no change.
Tried different sim card-nothing happened.
Tried to register network manually but it doesn't work.
Plane mode ON and OFF is not helping neither.
Phone recognise a card, asks for PIN, PIN OK but still no signal.
Anyone has an idea is there a way to improve or boost GSM signal? Or to fix "receiver"?
Click to expand...
Click to collapse
Update about phone:
I wondered how my friend managed to crack a screen just buy stepping on it, and now I know.
I had to screw a shelf today, and while holding a screwdriver in one hand, and shelf in other, the only option to get some light was to put a phone with flashlight on between my teeth. Same second I've "bite" my phone, I heard "crack" sound, and the corner of my screen was broken. Now I know there is no gorilla glass here, and can easier understand the price difference of Alcatel and my Galaxy S6.
Hello, I would like to present my solution to the no service problem.
Some two weeks ago "no service"show on my phone, I tried many ways to solve the problem:
-I tried different sim cards
-I changed my ROM with LGUP
-I make ROOT on the phone
-I change modem file
-I change modem options i Hidden menu
Nothing helped !!!But today I restored the phone(H990DS) to life and I would like to share my solution.
First of all, the symptoms my phone has had:
-No service
-signal strength 0dbm 99asu
-inpossible RAT in hidden menu and network mode
-impossible to change BAND in hidden menu
My solution
In my case, the problem turned out to be hardware, although I thought it was a software
First, we take out both covers with antennas . We unscrew four screws from each cover and pull them by pulling or slightly undermining.
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at this point, when I switched on the phone without covers / antennas, this one tried to go to the network and I could choose RAT and mobile network.
Tthere was a lot of dust and other **** under the covers!
I cleaned everything nicely with a brush. Then I cleaned all the marked pins on the phone and in the covers with alcohol.
Using a small flat screwdriver, I slightly raised the pins on the motherboard for a better contact.
Later I turned everything back and my phone is working properly
I think that the muck caused resistance and the modem turns off the transmitter so as not to damage it. I hope my solution will help someone, sorry for my English.
Same Problem
I've the same exact problem with the same model. The pictures in your post are not visible. May you please, re-upload the pictures or send them by email?
My phone is a brick
I found a few old photos on google drive.
After pulling the battery cover, you can see 8 screws from the plastic covers / antennas. You unscrew the screws and pull the covers until they come off. You can undermine them, it's easier to go down but there is a risk of damaging something. I do not have v20 anymore, in my case the way I described helped about 2 months. After this period the problem occurred again and helped replacing the motherboard ordered in China (the new motherboard had a problem with the zyroskop ). I hope you will have more luck, it was a very good phone if it was not for defects.