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it's not the rom,have run loads over the past year since it started -but its getting alot worse. my phone will for no reason will report sim card missing-have tried other sims ,have cleaned & reformed contact pins-any thouights or is this the begining of the end?
maybe the slot, or the buses leading to the slot are damaged?
Hi,
I have exactly the same problem. I have sent it to repair and of course the replay was, that they need to change the motherboard (I guess it is the same as saying we don't know what's wrong). I have ready that the problem is in contacts conecting to the sim holder. but since Unis are not so expensive anymore, I just bought another one. Maybe if I have more time, I will try to investigate. BTW, I also tried several ROM updates as well as changing SIM cards, but no positive results.
421905633783 said:
Hi,
I have exactly the same problem. I have sent it to repair and of course the replay was, that they need to change the motherboard (I guess it is the same as saying we don't know what's wrong). I have ready that the problem is in contacts conecting to the sim holder. but since Unis are not so expensive anymore, I just bought another one. Maybe if I have more time, I will try to investigate. BTW, I also tried several ROM updates as well as changing SIM cards, but no positive results.
Click to expand...
Click to collapse
No, chanigng the motherboard is short for "Hardware Fault", meaning that most likely, the SIM card bus is broken. Since this is printed circuitry, it cannot be repaired, and the whole motherboard must be replace to solve the problem.
update-cleaned and reformed contacts & put a little sheet of hard plastic behind sim contacts arms this seems to allow the increased pressure to remain and my phone seems to be working -48hrs now
with reference to hardware failure ie motherboard or sim bus surely it would be permanent(unless it was a dry joint?)
I've just started having this problem as well -- when my Uni boots it says "No GSM". Sometimes I can get in and make a call or check my messages, but it seems to go away over time.
I think that's the end of the line for me and Unis. I love the device, but it's just not worth throwing time at anymore, I don't think.
HI all, I am currently using khalpowers V4, and was using Dexter's 1.3 before too.
What is happening is that every hour or so, the phone will detect no sim card. I'll have to remove battery, take out sim, re insert in, and HOPE it works on my next reboot (chances varies, some times it takes a while before it reads again).
I am not sure if its a hardware or software issue, my sim card is fairly scratched (don't know if that plays a role in this).
What i realize recently is that once i get that problem, i can get into open recovery and wipe DALVIK cache, and it'll detect it again without having me to remove and reinsert my sim card.
Was wondering if this is just me or the rom? Or if anyone have any experience with this kind of madness, this is driving me nuts as i have to restart my phone every hour.
Kev84 said:
HI all, I am currently using khalpowers V4, and was using Dexter's 1.3 before too.
What is happening is that every hour or so, the phone will detect no sim card. I'll have to remove battery, take out sim, re insert in, and HOPE it works on my next reboot (chances varies, some times it takes a while before it reads again).
I am not sure if its a hardware or software issue, my sim card is fairly scratched (don't know if that plays a role in this).
What i realize recently is that once i get that problem, i can get into open recovery and wipe DALVIK cache, and it'll detect it again without having me to remove and reinsert my sim card.
Was wondering if this is just me or the rom? Or if anyone have any experience with this kind of madness, this is driving me nuts as i have to restart my phone every hour.
Click to expand...
Click to collapse
Never had this issues with any ROM or stock...... time to get a new SIM buddy
hellmonger said:
Never had this issues with any ROM or stock...... time to get a new SIM buddy
Click to expand...
Click to collapse
i'll agree with this
it's probably the SIM card that has got scratched, faulty, or something happened to it
i had to replace mine a while back for similar reasons
actually i was unable to send SMS out, but i was able to receive.
and incidentally i'll randomly get no signal
after i changed the SIM card for a new one, all the problems went away.
that was on my other phone.
never had problem on the XT720
extract rar folder then take the only (sub khalpowers V4 folder) and put the SD card installed .... ok ......You'll see it works ... the problem is the double folder
AllGamer said:
i'll agree with this
it's probably the SIM card that has got scratched, faulty, or something happened to it
i had to replace mine a while back for similar reasons
actually i was unable to send SMS out, but i was able to receive.
and incidentally i'll randomly get no signal
after i changed the SIM card for a new one, all the problems went away.
that was on my other phone.
never had problem on the XT720
Click to expand...
Click to collapse
Thanks, i just wanted to confirm if it really is the sim, i suspect it is, but the thing is that it KINDA works, and then don't.... i guess i'll have to invest in a new sim card. Anyone know if Wind will give me a new one if i whine to them?
Kev84 said:
Thanks, i just wanted to confirm if it really is the sim, i suspect it is, but the thing is that it KINDA works, and then don't.... i guess i'll have to invest in a new sim card. Anyone know if Wind will give me a new one if i whine to them?
Click to expand...
Click to collapse
Could it be a loose connection? I've read about people that have trouble with loose connections on their SD cards positioning a piece of paper to increase the contact force.
Kev84 said:
Thanks, i just wanted to confirm if it really is the sim, i suspect it is, but the thing is that it KINDA works, and then don't.... i guess i'll have to invest in a new sim card. Anyone know if Wind will give me a new one if i whine to them?
Click to expand...
Click to collapse
yup, i got my replacement for free, but you have to first call customer service, and explain to them what is going on
then if they believe it's a SIM problem, they will tell you to go to any corporate store, and they will replace it for you at no charge
the CS will put a note on your profile, which the store can look up, and honour the free SIM replacement.
Mioze7Ae said:
Could it be a loose connection? I've read about people that have trouble with loose connections on their SD cards positioning a piece of paper to increase the contact force.
Click to expand...
Click to collapse
unfortunately i tried that already, but executed the idea in a VERY poor way, i actually put the paper at the tip of the sim and pushed it in to make the contact better, BUT when i slide the sim out, the papaer was still stuck inside, now i can't push my sim in all the way.... at least it still works .....
felt retarded, but at least lesson learned ><
AllGamer said:
yup, i got my replacement for free, but you have to first call customer service, and explain to them what is going on
then if they believe it's a SIM problem, they will tell you to go to any corporate store, and they will replace it for you at no charge
the CS will put a note on your profile, which the store can look up, and honour the free SIM replacement.
Click to expand...
Click to collapse
Thanks i'll give them a call and give it a try.
I had the exact same problem for a week. At first the SIM got disconnected after leaving the phone idle for 10-20 minutes, then after many reboots the SIM card wouldn't be detected at all.
I got it replaced for free as well, and some of my other messaging and call problems went away too. =)
Hi! After repairing my Nexus 5 from a water damage (changed all components except the screen and back cover), the phone shows that I have good celluar signal, but no service. The celluar data is working, but I cant make calls and send SMS. I have checked with different antennas, but with no change. What is wrong? Thank you
Well,
Hard to tell. Maybe a hardware issue with the motherboard ? (this coud explain why somebody sold it to you )
I wonder how much you paid for the replacement of all these components...
Have to say....water is evil and replacing things often ends up with discovering more is damaged. In the end, replacing water damaged devices usually ends up being the better choice.
Flash stock and if still no go, it's hardware. Try another radio maybe.
Not much else you can do.
KJ said:
Have to say....water is evil and replacing things often ends up with discovering more is damaged. In the end, replacing water damaged devices usually ends up being the better choice.
Flash stock and if still no go, it's hardware. Try another radio maybe.
Not much else you can do.
Click to expand...
Click to collapse
I'll second it. Pretty much out of options now. This is the reason water damage is so frowned upon by then OEMs.
Sent from my Nexus 5 using Tapatalk
Well,
Hard to tell. Maybe a hardware issue with the motherboard ? (this coud explain why somebody sold it to you )
I wonder how much you paid for the replacement of all these components...
Click to expand...
Click to collapse
It worked fine for 2 weeks after I repaired it, but then I suddenly lost the service. I paid 170 dollars for a new phone with cracked screen and replaced all the components except the screen...
Try dialing *#*#4636#*#* and go into phone information, if you have your phone on LTE when you scroll down you will find LTE only, click on it and try changing it to different things
Hey everyone,
recently my SC-02h (Jap Docomo version) hard-bricked and has no way to recover besides JTAG or motherboard replacement.
This made me think of an experiment.
Can you replace any motherboard (which includes all chips and the storage) with another.
I ordered the g935FD dual sim version with the Exynos chip, this compared to my QC single sim version which is currently bricked.
Hopefully within the next few days I'll receive the motherboard and start the replacement process (I will probable film it) to see if it works.
If so, anyone could replace their motherboard by a new one that is unlocked or has a different chipset.
Please discuss here if you're also interested in changing your own mobo with another.
Can't see why it won't work as the motherboard is what determines the model. Just make sure you order up a dual SIM tray too.
Motherboards from different chipsets *may* have different connections on how things wire up. I'm not saying they do, I'm just thinking out loud. I'd only buy a replacement motherboard from the same variant.
And good luck finding a new motherboard. At the price they sell for, you'd be better off buying a whole new phone.
Would like to see how this goes. Please record the process.
Sent from my SM-G935T using Tapatalk
lyriquidperfection said:
Can't see why it won't work as the motherboard is what determines the model. Just make sure you order up a dual SIM tray too.
Click to expand...
Click to collapse
Yea I ordered that one, although I thought the tray looks the same (bottom part), so until my new one arrives I'll use the older one.
the_scotsman said:
Motherboards from different chipsets *may* have different connections on how things wire up. I'm not saying they do, I'm just thinking out loud. I'd only buy a replacement motherboard from the same variant.
And good luck finding a new motherboard. At the price they sell for, you'd be better off buying a whole new phone.
Click to expand...
Click to collapse
I checked the connections and they are the same, the only thing that differs is the sim holder and the chipset.
Also a new phone (unlocked) costs at least 2,5times more (live in Japan).
dogredwing1 said:
Would like to see how this goes. Please record the process.
Sent from my SM-G935T using Tapatalk
Click to expand...
Click to collapse
I'll record it on video as soon as it arrives, also the process of taking it out and replacing it completely. So if it ends up in failure you can all see it.
In what way is it bricked? The S7 is almost impossible to brick.
CuBz90 said:
In what way is it bricked? The S7 is almost impossible to brick.
Click to expand...
Click to collapse
Hmm I flashed a rom with TWRP, (lineage, but wrong build) after that I rebooted and the phone stopped responding completely.
So black screen, no led when charging, no response at all when pressing buttons.
Even disconnecting battery and reconnecting didn't work.
Also no recognition in windows when connected to USB
totalvamp said:
Hmm I flashed a rom with TWRP, (lineage, but wrong build) after that I rebooted and the phone stopped responding completely.
So black screen, no led when charging, no response at all when pressing buttons.
Even disconnecting battery and reconnecting didn't work.
Click to expand...
Click to collapse
Can't get to download mode?
CuBz90 said:
Can't get to download mode?
Click to expand...
Click to collapse
Well if I could I wouldn't be ordering a new MoBo
Even made a USB JIG
Another thing you might lose is waterproofness. I cracked my screen badly and instead of repairing it at a 3rd party shop, I sold it and got a new one. Coz it won't be waterproof anymore..
thedisturbedone said:
Another thing you might lose is waterproofness. I cracked my screen badly and instead of repairing it at a 3rd party shop, I sold it and got a new one. Coz it won't be waterproof anymore..
Click to expand...
Click to collapse
i should be fine, just get it glued back together properly.
besides i don't really care about it.
Unless the other components (camera, vibrator motor, various sensors, OLED Panel etc.) don't differ in the way they talk to the mainboard, I don't see why it shouldn't work. As others have said, I'd really love to see how it'll work out for you. So, thanks for sharing =)
Well it didn't work out, I put in the new motherboard but the phone didn't power on at all. There is also no led when trying to charge it. I'll be sending it back to the supplier and buy another version instead.
https://www.youtube.com/watch?v=jym2aNwRmkc
Made a video of the process and failure
totalvamp said:
https://www.youtube.com/watch?v=jym2aNwRmkc
Made a video of the process and failure
Click to expand...
Click to collapse
Was interesting to watch, however you only tried powering on twice and quit?
Connecting a charger had no effect?
Unless the board your received was dead to begin with.
totalvamp said:
https://www.youtube.com/watch?v=jym2aNwRmkc
Made a video of the process and failure
Click to expand...
Click to collapse
Can you share the link of where you bought the motherboard? It might be that you bought a blank motherboard. In that case you want it to be flashed with the correct IMEI and partition (table?). AFAIK the IMEI has to be that of your previous phone since you can't just "create" a new IMEI. Don't even want to get into the legal repercussions but here's a sneak peak; in some countries it's a criminal offence to alter an IMEI or even have tools to alter IMEI. Don't quote me on this and I'm asking the community to correct me. If the motherboard comes from a previously active device, it should have its own IMEI and none of what I said before matters.
Whatever, none of that necessarily explain why it didn't boot up. Have you tried charging and plugging it to a PC? If it isn't dead, your PC should at least detect A device.
murtaza02 said:
Was interesting to watch, however you only tried powering on twice and quit?
Connecting a charger had no effect?
Unless the board your received was dead to begin with.
Click to expand...
Click to collapse
Well I tried a few times after that and after letting it on a charger, still no response.
nitrous² said:
Can you share the link of where you bought the motherboard? It might be that you bought a blank motherboard. In that case you want it to be flashed with the correct IMEI and partition (table?). AFAIK the IMEI has to be that of your previous phone since you can't just "create" a new IMEI. Don't even want to get into the legal repercussions but here's a sneak peak; in some countries it's a criminal offence to alter an IMEI or even have tools to alter IMEI. Don't quote me on this and I'm asking the community to correct me. If the motherboard comes from a previously active device, it should have its own IMEI and none of what I said before matters.
Whatever, none of that necessarily explain why it didn't boot up. Have you tried charging and plugging it to a PC? If it isn't dead, your PC should at least detect A device.
Click to expand...
Click to collapse
http://www.ebay.com/itm/MAIN-MOTHER.../182310990269?ssPageName=ADME:X:RRNTB:NL:3160
It should be one with an IMEI how else can it be unlocked.
I tried plugging it in as well, but my PC doesn't recognise it at all.
I've ordered a different one this time, this motherboard was also slightly different from the one I had (2 cables instead of 3) so it might be incompatible.
I ordered this one now: https://www.aliexpress.com/snapshot/0.html?orderId=82116420384467&productId=32737224430
Did you end up having any luck with the second motherboard?
Or has anyone else attempted this before?
I'm looking to swap my qc chip for the exynos.
How was the operation??
Hello i'm interested to know how was the experiment becouse i wanna try almost the same thing, i have a s7 sm935fd and i wanna change the motherboard for a sm935f model. Please answer me!
I am also going to try swapping motherboards. How did yours work out?
Hi @totalvamp,
I am going to try swapping out a good motherboard from a banged up sprint G930P phone with a clean IMEI into a clean, whole, G930X demo model that I picked up cheap on Ebay.
The "X" demo phones work on WIFI only. I understand that the "X" motherboards are missing the cellular radios, which is why I am trying this swap -- it should be far easier and less costly than doing a full screen&LCD replacement, which requires tearing down the entire phone, and costs about $150. Hopefullly, I will just have to remove the back, the QI receiver and I think the camera, and I'll get access to the motherboard.
My hope is that all the rest of the parts are present -- we'll see how it goes.
I look forward to hearing from you.
Philip
Okay have this phone a while but only as back up
However its not reading any Sim but where the sim goes in bit cracked.
Anyone got any ideas as to try and fix this?
If not going to check in brick and mortars shop to see if it can be fixed
it is possible, that the Sim / Simholder was insert in the wrong direction?
In this case the cardholder could be broken. This is/was a known issue, where everyone with this phone must give attention
So is there any solution to this if it is the case.
Take it not easy to find a new tray?
If it really this issue, a new Small part (Cardholder) must be replaced. The part is not expensive, the biggest part is the work. But possible
Bought new cardholder and same issue not reading
Any other suggestions or just leave it in for repair
funkyirishman said:
Bought new cardholder and same issue not reading
Any other suggestions or just leave it in for repair
Click to expand...
Click to collapse
Sounds like at some point somebody shoved in a standard sim instead of a micro sim, or shoved it in backwards. Either way I'd get a multimeter and test the voltage for the sim connectors by taking the back of the phone off. This is basically what they would do at the phone repair shop if they couldn't get it to read any Sims, before entirely replacing it. This way you'd know exactly what is wrong with your sim port.
The oneplus one takes micro sims not nano sims