Hellu!
A friend of mine dropped her SGS2 accidentally into the bathtub but was quick to retrieve it. After drying it she got it to run but there was no response from the USB port so she couldn't recharge it. I replaced the USB flex and while having it hooked to the computer I upgraded it to the latest firmware through KIES, all official and no trouble. Gave it back and now she can't get signal... Problem is that I don't know if the signal trouble was before I replaced the USB port incase I "broke" something while fixing it.
No signal, no mobile network. I get no signal and can't make any connections to any provider.
Things I've been trying and reading up on..
IMEI is correct, the EFS folder intact ("mount" in Terminal emulator) and backed up also.
Opened up the phone again to check if internal antenna was attached to the sockets and everything else secured.
Tried different SIM cards which it accepts except for no signal
Factory reset
Flashed a lower ICS (4.0.3), changed CSC, tried different basebands
Rooted the phone and did a complete reset from CWM (dalvik, format system, cache the wholeshobang)
Internet wifi works, the signal strenght is stuck on "-111 dBm 1 asu"
The whole time after the water accident she's been having the phone with her without the backcase, leaving it open. I read that if you connect a external antenna it will override the internal one and get stuck.. I though maybe keys or something metal in her purse got in contact with it?! (I know, far stretched)
Perhaps the USB flex replacement is bad since one end of the internal antenna is attached to it. I could try to replace it back to the bad usb flex.
OR... Perhaps it's just another failure due to the water accident...
Phone seems to be in great shape except for missing it's main purpose, being able to call
Help
Menvaihelv... said:
Hellu!
A friend of mine dropped her SGS2 accidentally into the bathtub but was quick to retrieve it. After drying it she got it to run but there was no response from the USB port so she couldn't recharge it. I replaced the USB flex and while having it hooked to the computer I upgraded it to the latest firmware through KIES, all official and no trouble. Gave it back and now she can't get signal... Problem is that I don't know if the signal trouble was before I replaced the USB port incase I "broke" something while fixing it.
No signal, no mobile network. I get no signal and can't make any connections to any provider.
Things I've been trying and reading up on..
IMEI is correct, the EFS folder intact and backed up also.
Opened up the phone again to check if internal antenna was attached to the sockets and everything else secured.
Tried different SIM cards which it accepts except for no signal
Factory reset
Flashed a lower ICS (4.0.3), changed CSC, tried different basebands
Rooted the phone and did a complete reset from CWM (dalvik, format system, cache the wholeshobang)
Internet works, the signal strenght is stuck on "-111 dBm 1 asu"
The whole time after the water accident she's been having the phone with her without the backcase, leaving it open. I read that if you connect a external antenna it will override the internal one and get stuck.. I though maybe keys or something metal in her purse got in contact with it?! (I know, far stretched)
Perhaps the USB flex replacement is bad since one end of the internal antenna is attached to it. I could try to replace it back to the bad usb flex.
OR... Perhaps it's just another failure due to the water accident...
Phone seems to be in great shape except for missing it's main purpose, being able to call
Help
Click to expand...
Click to collapse
try one of the custom ROMs with a latest modem
ctg60000 said:
try one of the custom ROMs with a latest modem
Click to expand...
Click to collapse
Nope, tried it and no go, seems more like there is a hardware failure after all, any more ideas?
Tried another USB flex to see if that was the problem but no.. . Anyone?
Ok.. Replaced the GSM/speaker part located at the backpart now and still no signal. Well.. When i reboot the phone I get a connection and may be able to make a short phonecall then it's just back to no signal.
Been reading up alot and I found out there is some kinda "no service bug" that exists, but all the solutions there didn't work so good.
I have same problem on a i9300 gonna see if it's antenna problem or something. And post back of I got lucky
Seems like the phone needs to get some service center time.....
BTW never connect anything to the external antenna socket.
Sent from my digital submersible hovercraft.
I have a similar problem with a i9300. Is there a way to check if modem or antenna is not working? I remember about read a few days ago than android throw some errores when modem is not working
Related
Dear all,
I have a Legend with S-ON (1.01), and I used fake-flash to change ROMs. The mobile phone has been fine with a custom ROM for more than 3 months now.
Suddenly, 3 days ago, the phone rebooted while browsing settings and when it came back on, the device could not recognize the SIM card or connect to the network and get a signal.
The problem is weird because the device (a) can find networks if I search for them, (b) can make emergency calls, (c) connects normally to both wi-fi and the SIM 3G internet but does not:
- get signal (always zero lines)
- recognize the sim card (always asks me to rescan for new contacts, and the process fails)
I tried wiping everything, I tried reflashing, I tried flashing another ROM. The problem persists.
Would flashing a new RADIO potentially help? It is the only thing I have not tried.
I am really at a loss here. The device did not fall down, or had a knock or any other user damage. The problem started suddenly and i can'f find a way out of it.
Anyone who manages to find me a solution gets a paypal beer
PS: Something important is that the phone DOES know that SIM card is there, and DOES partially recognize it: I am asked to put my SIM card PIN, which is accepted correctly.
Hey
What I'd do:
1.)Try the SIM in another device - could be a SIM problem...
2.) As you are 1.01, there is no risk in Warranty repair, so unroot and send back to shop if the sim proves OK in another device..
Probably a stupid suggestion but i had at one point no service when my battery cover was not on...
When i was rooting mine, i kept the battery cover off because i was stuck so many times in the middle of running step 1... so never bothered putting the battery cover on...
after i succeeded in rooting, i still saw no service... but as soon as i put the battery cover on , i was able to pick up the network
@QkSi1ver: The Legend's antenna is located in the battery cover, which is why you would have had no reception with it removed.
LeifAlbor said:
@QkSi1ver: The Legend's antenna is located in the battery cover, which is why you would have had no reception with it removed.
Click to expand...
Click to collapse
Which could be the reason for the SIM problems : if it is not set correctly it can't communicate proper with the mobile , that's why it asks for searching for contacts ( I had a similar problem a few months ago )
no network signal!
QkSi1ver said:
Probably a stupid suggestion but i had at one point no service when my battery cover was not on...
When i was rooting mine, i kept the battery cover off because i was stuck so many times in the middle of running step 1... so never bothered putting the battery cover on...
after i succeeded in rooting, i still saw no service... but as soon as i put the battery cover on , i was able to pick up the network
Click to expand...
Click to collapse
i don´t believe it! first of all, thank u kindly for ending my nightmarish odyssey through expert forums across the globe!
that just did the trick, uber cool! and yet it sucks, because i wasted most of my sunday and half of today to solve this, wondering why nobody even mentioned connection probs.
maan, i´m tired, i´m going to bed!
Hi guys,
First post so please bear with me...
The phone was dropped recently and screen smashed up badly.
Replaced screen and thought all was working fine until tried to make a call/send a message when I discovered that the phone had no network access...
Here's the diagnostic process I've been through...
Wifi works100%
Sim works in other phones
Other sims don't work in this phone.
Checked the antenna assembly to ensure contacts okay
Sim definitely reading - able to read sim contacts
Switched to airplane mode, reboot, turn back on - no luck
Searched for networks manually - no networks found at all. Another phone (samsung galaxy gio) finds all three (Optus, telstra, Vodafone)
No networks detected automatically either
No network detected using 2g only
So, if my wifi is working fine, that should rule out an antenna issue which to me indicates a hardware fault with the network side of things...
Is there a way to verify this is actually the case? And if so, is there a way to repair/solve it without doing a motherboard replacement???
Here was I thinking that it would be a cheap, easy repair... :/
Philbo29 said:
Hi guys,
First post so please bear with me...
The phone was dropped recently and screen smashed up badly.
Replaced screen and thought all was working fine until tried to make a call/send a message when I discovered that the phone had no network access...
Here's the diagnostic process I've been through...
Wifi works100%
Sim works in other phones
Other sims don't work in this phone.
Checked the antenna assembly to ensure contacts okay
Sim definitely reading - able to read sim contacts
Switched to airplane mode, reboot, turn back on - no luck
Searched for networks manually - no networks found at all. Another phone (samsung galaxy gio) finds all three (Optus, telstra, Vodafone)
No networks detected automatically either
No network detected using 2g only
So, if my wifi is working fine, that should rule out an antenna issue which to me indicates a hardware fault with the network side of things...
Is there a way to verify this is actually the case? And if so, is there a way to repair/solve it without doing a motherboard replacement???
Here was I thinking that it would be a cheap, easy repair... :/
Click to expand...
Click to collapse
If you want it free of cost so first try flashing new firmware via odin and then check it if not then give it to service centre !:good:
Make sure you're using a stock rom just in case it is a software problem, but it looks like a hardware problem to me. I recommend taking it back to the repair centre where you got your screen replaced.
I don't think it is possible without a motherboard replacement.
Not sent from a ACE but a CooperVe using Tapatalk 2.
thanks
I think I'll do a total strip down again just to make doubly sure that i've got absolutely everything connected in the right place and then if it's still not resolved, I'll look at sourcing a motherboard through some chinese friends...
The phone was actually purchased when in china, and as a result I had to flash it with an Aussie rom to get the google back in android. It's all worked fine since then until dropped which makes me think it's hardware related. problem with buying it in China is that I can't seem to find a motherboard online for it galaxy ace 5830i (the 'i' is the problem... can find plenty of 5830 mobos but seems the consensus is using a 5830 mobo will brick the phone...)
Oh well, thanks for the advice guys.
Even i had the same problem, but i solved it by flashing a stock ROM. You can try that or flash a stok kernel
recently I also had this same problem, even installing the stock rom did not solve, so I researched in several places and saw what could be problem with the IMEI, I did the whole process of repair IMEI and my phone is back to normal , try this method:
http://forum.xda-developers.com/showthread.php?t=1968360
Sent from my GT-S5830i
So...
I pulled it apart again to double check everything and noticed that the cell chip had come disconnected from the mobo upon impact and was only attached by three copper strips. After staring at it under a bright light for a while (no magnifying glass was to be found!), we stuck some super glue under it and tried to dry contact all the points... but it still didn't work.
However... after talking with a mate who's into circuit boards, he suggested that I try putting the mobo in the oven at 350 deg for 15 min to resolder all the joints as they use low-temp solder on these sort of boards.
I've got nothing to lose, so will be giving this a try when I get a chance and see if this brings it back!
I'll post back my results.
Yeah, and I recommend using a fine tip on your soldering iron just to be safe.
Not sent from a ACE but a CooperVe using Tapatalk 2.
Afternoon, XDA people.
I recently repaired my brother's S II after he broke the USB port by dropping it while plugged in. I ordered a new flex and antenna (because I broke the old antenna) and after installing all the new stuff, it gets awful to no signal. He's on Straight Talk (ATT) and usually gets 3-4 bars where we are, but now the cell rating doesn't go above 111 dBm, 1 asu. I've tested his SIM in my S II and it works fine. APNs are the same. I also updated the modem to the most recent one for ICS AOSP (he's running CM9), factory reset, all that fun stuff.
Could it be that the board has more to do with signal other than having the mic, USB, and antenna connection on it? Should I order another board and see if I had a faulty one? Should I throw it in a blender and see if it blends? Whatever insights you all might have would really help me out, because he has to have a working phone to make sure he'll have work throughout the week, and I don't want to give him a phone that isn't reliable.
Thanks for reading
guitaraddict4791 said:
Afternoon, XDA people.
I recently repaired my brother's S II after he broke the USB port by dropping it while plugged in. I ordered a new flex and antenna (because I broke the old antenna) and after installing all the new stuff, it gets awful to no signal. He's on Straight Talk (ATT) and usually gets 3-4 bars where we are, but now the cell rating doesn't go above 111 dBm, 1 asu. I've tested his SIM in my S II and it works fine. APNs are the same. I also updated the modem to the most recent one for ICS AOSP (he's running CM9), factory reset, all that fun stuff.
Could it be that the board has more to do with signal other than having the mic, USB, and antenna connection on it? Should I order another board and see if I had a faulty one? Should I throw it in a blender and see if it blends? Whatever insights you all might have would really help me out, because he has to have a working phone to make sure he'll have work throughout the week, and I don't want to give him a phone that isn't reliable.
Thanks for reading
Click to expand...
Click to collapse
You should do something like this and also nake sure that part numbers you installed match to one you replace. ...look one more time to connection
Also run service mode something like this
Success is never final
Failure is fatal
Fixed it
samprocat said:
You should do something like this and also nake sure that part numbers you installed match to one you replace. ...look one more time to connection
Also run service mode something like this
Success is never final
Failure is fatal
Click to expand...
Click to collapse
Wow, I totally forgot I posted this. Thanks for the response, samprocat. Turns out that the board I got was for the international edition, not the i777. Got a board for the i777 and it worked on boot, no issues. Tested for 4 months and going strong.
Hey XDA,
some month ago I damaged my phone after 3 great years with it.
I bought a new one via ebay and here is the problem. He said for sure its all fine with it. There should be no problem for sure.
First I had somehow reception issues. Sometimes the connection to my provider was off and sometimes it had 3 of 4 Bars. People told me its not a flashable modem issue, but a issue where i have to change some hardware.
so did I, changed the antenna and the receiver and still nothing changed.
I always want to find and fix the problem by myself, but now i'm at some point where i really dont know what else i could do instead giving it to a repair service.
what i did? changed all modems and stockroms which I could get from the internet and install them one after another and checked my connection via "Network Signal"
the biggest issue there was, at home the connection to my provider was good and at my girlfriends home it was totally broken.
maybe anyone could help me out there?
i just read http://forum.xda-developers.com/showthread.php?t=1667326 maybe i should change the back plate where most of the stuff have connectors? like the GPS does? because if i dont have it on i wont be able to connect anywhere.
My Provider? Vodafone D2 and in other Cellphones the SIM-Card doenst have any problems with the connection/reception
Last two mounts i have extreme issues whit this ****. From time to time after random reboot cannot get network signal with any sim card i put in ,no the one i'm working with or other. Seems that only solution is factory reset , have hard reset if with new kdz 2aa and still nothing. Doesn't have exactly time for this issue , happens whenever it wants. Otherwise phone is fully operational and without other issues.
So most probably the issue was caused by bad connection to the mobile antenna that is connected via few pins under the cover ( under battery ).
Have tried to check is the sim issue with few programs that read the info from sim card chip ( many in app store ). Saw that there isn't issue whit reading it so problem was even on the modem chip , antenna or the connections between them. After opening the phone ( easy 1-2-3 ) i have fully disconnected the mobo ( not sure it was needed ) and clean up the connection surfaces for the cover , and looked up for any suspicious chip ( burned or something ). After this have put everything back and now phone is working like it should.
Haven't have issue with the reception before the intervention but i'm not sure it's exactly bad connection or faulty chip that is working from time to time. Fact is that it's currently working fine for several days ( 4 ).
Already planning to move on other phone because i'm sick of the bad support from VRZ , planning to use Huawei P20/P20lite or Mate10/Mate10lite