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Lost reception doesn't come back without restart

I've been having a problem lately with my Captivate. At my work there's a complete dead zone where I lose reception completely (the 4 bars are replaced by a circle with a cross through it). However, when I leave work and go back home the reception never comes back - I've waited and waited and waited, but it still stays Xed out.
The phone requires a restart, and after that it picks up reception normally.
has anyone experienced this?

Did you try enabling flight mode, then turning it back off? Same effect as restarting the phone for your signal problem.
But in answer to your question, I've never had that problem. I have had a problem getting my signal back, but I just hold the phone in the open for a bit, and then stick it in my pocket again once I obtain service.

miztaken1312 said:
Did you try enabling flight mode, then turning it back off? Same effect as restarting the phone for your signal problem.
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I have, and it doesn't work. I have to turn the phone off and back on again.

I have the exact same issue.

I was having the same problem. They changed out the SIM card and have not had the problem sense. If your SIM has been through a few phones my not hurt to get a new one.
Sent from my SAMSUNG-SGH-I897 using XDA App

thedoodle said:
I was having the same problem. They changed out the SIM card and have not had the problem sense. If your SIM has been through a few phones my not hurt to get a new one.
Sent from my SAMSUNG-SGH-I897 using XDA App
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Thanks, I just ordered a new SIM card online. My existing one is 4 years old and scratched up like crazy, that may be it.
On a different note, once I receive my new SIM card does anyone know how to associate it with my plan? The ebay listing for the SIM card said to do it through the following website but I'm not sure which option is correct ("upgrade phone" perhaps?)
https://www.wireless.att.com/activations/

Paladuck said:
Thanks, I just ordered a new SIM card online. My existing one is 4 years old and scratched up like crazy, that may be it.
On a different note, once I receive my new SIM card does anyone know how to associate it with my plan? The ebay listing for the SIM card said to do it through the following website but I'm not sure which option is correct ("upgrade phone" perhaps?)
https://www.wireless.att.com/activations/
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For simplicities sake and for your own safety, take it into at&t and have them do it. At least you know it will be done correctly.
Sent from my Captivate

att gives u free sim card if goto their main stores

If you get a new sim just call at&t and tell them you need to change the sim number.
Sent from my SAMSUNG-SGH-I897 using Tapatalk

ViniD said:
att gives u free sim card if goto their main stores
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I've been through many AT&T stores and they always charge me $25 for a new SIM. How'd you get free ones?

miztaken1312 said:
I've been through many AT&T stores and they always charge me $25 for a new SIM. How'd you get free ones?
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You must be going to private franchises because AT&T charges them for SIMs. If you call 611, they would make a notation to your account that you get a free one and the franchise would get reimbursed by AT&T.
I had to get a new SIM with my phone and it experiences this same issue. Has anybody had any luck with getting rid of the problem?

dennistaylor said:
You must be going to private franchises because AT&T charges them for SIMs. If you call 611, they would make a notation to your account that you get a free one and the franchise would get reimbursed by AT&T.
I had to get a new SIM with my phone and it experiences this same issue. Has anybody had any luck with getting rid of the problem?
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I don't believe they were private. They are regular at&t stores. But next time I'm definitely calling 611 for my similar problems
Sent from my Captivate

i have the same issue. i got a new sim when i got the phone and i rarely touch the sim. I bought the phone on launch day and have only just started seeing the issue. it seems to me that it started after the OTA patch but it is still happening after i flashed Cognition v2.1.7

phone HATES my SIM CARD "unregistured sim"

My phone HATES my SIM CARD, First off i rooted my phone, its fully unlocked and has been just fine for over a month. I'm using FIDO but its an unlocked Rogers phone. (SGH-I727R model) and original FW and everything. made a couple of phone calls in the morning and the when i got home i noticed that my phone displayed "unregistured SIM" so i tried reloading sim card, reboot and so on over and over again. and it didnt work. so put the sim card in my 4year old phone, and it worked.
try calling fido aswell as rogers.. they said, sim card might be old and there is a conflict with the NEW phone. so i went to futureshop talked with the dude got the NEW sim card and tested it out with no success. again tried it with old phone, WORKS..
now you think maybe the phone might be locked somehow... NOPE. i even tried dude's sim card and he is on another network. (NOT rogers or fido) WORKED with his sim, proof my phone is totally unlocked to any carrier.
NEW SIM Card Doesnt work with my phone but worked perfectly with buddies SIM CARD on another carrier?!?!... lol
and now it shows "no service"
PLEASE HELP.

Update
i have just formatted, cleared cache and factory reset and it still says the same ****. no service... anyone help? i'm dead in the water here..

I had the same problem, I had to switch carriers then my phone started working properly, Honestly I think its the company...

Update
well, it looks like i hit rock bottom. i even installed the new ics rom and its still doesn't take my SIM card. I'm pissed. i need to dump this phone and get a working one. I can't switch over to rogers, I hate them. and when i go on vacation this phone will be a brick if i cant insert everyone elses sim cards around the world.
and i dont think its the company's fault. i have a feeling its because its rooted or something along those lines.
maybe i will wait for the new galaxy sIII and dump this ****. $$560 wasted. i feel soo stupid for getting this phone.

hi,
What have you used to unlock sgh-i727? I have one and need to unlock it so can switch to other provider then ATT.

when i bought the phone it came unlocked. you must goto a website and give them your imei # that is on your phone. and they will sned you a unlock code upto 2 hours later.. DONT try and guess the code. and you will have to pay a fee but it will be minimal. $3-10
Final UPDATE, i went to rogers and got the phone on a contract for $50 and now i think i will give this to my mother to use for pics and ****. i have not a clue what to do with this thing.

And now it works
How reliable is that, i went out and bought a second phone from rogers and after a couple of days of my old phone not working with any sim card, Now it works with both rogers and Fido. Now i am stuck in a 3yr contract and have 2 of these phones. anyways i will try and get rid of my stupid contract. its only been a couple of days and "buyers remorse" law states that you can get out of any contract within 15 days of when the contract was signed.

Same Here
Strange - I had the EXACT same thing happen to me as well. Funny thing is it happened the same day as your first post about this issue on Jan. 25. I am on FIDO as well and had a working, unlocked i727R I bought off eBay from Basatne Electronics.
It was unrooted and working perfectly for a month and a half. All of a sudden I got ‘no service’ and sometimes ‘unregistered sim’ when I rebooted. I tried 6 different sim cards from FIDO and Rogers that worked on other phones and same thing. I cleared cache and did a reset. Same thing. I brought it to FIDO and Rogers and tried their demo sim cards in it. Same thing.
Finally I called Samsung to sent it back to them for ‘repair’. They sent me a UPS label and I sent it to Service Absolut, Samsung’s repair subcontractor in Montreal. It was there for over a week now. Their communication is terrible – it just says ‘open’ or ‘close’ on Samsung’s tracking website, so I called Absolut themselves yesterday asking for the status/tracking number. They said they were going to ship it yesterday even though my repair ticket online said ‘close’ since last wednesday.
I find this really strange, especially since your phone seems to have done the same thing as mine right around the same time. I figure it was Rogers/Fido that messed up their network somehow. Two working Rogers sims didn’t work in it either. My sim card was working on my old blackberry still. My IMEI didn’t appear in any blocked IMEI lists I looked up.
I just got my phone back today 10 minutes ago and it works again. It says 'full software upgrade and reset' on the repair list I got back, although I didn't mod my phone in the first place. At least I had my backup blackberry. Still pisses me off – I spent hours trying to figure out what was wrong with it and I wiped all my apps when I did a reset, so I’ll have to load them all up again and set up my phone.
Just weird.

And Again...
Well, it seems it just happened again.
After a month and a week or two of working perfectly (same length of time as last time), my i727R now says 'No Service' again for some reason on FIDO network and won't connect to anything except through Wifi.
I didn't install any new software or change any settings when it happened.
It was working one minute, put it in my pocket and a couple minutes later it says 'No Service', even though I have always had service before in the area I am in right now.
Does anyone have a clue what can be causing this?
Network, Software (some kind of timer somewhere that would shut off connection), Malware?
This is driving me nuts - I don't want to have to send it back to Samsung again.
Last time Samsung said they reflashed the software when I sent it back.
I don't know why I would need to do that since it was working just fine and I wasn't messing around with any settings before it started saying 'No Service' - same thing happened last time.

same sim card getting LTE on one phone, only 1X/Spotty 3g on other

i posted this on another website's forum yesterday...sorry for those who read it twice, but i got no responses and am desperate.
so my launch day phone had a bit of an accident last weekend the screen cracked. I was able to get another thunderbolt from someone, was originally a refurb (tag under battery says "remanufactured in Philippines" )
any who I've been using the refurb one for about a week now, no major issues. But now today I can't get LTE at all...I've tried reflashing different radios, going back to sense over CM7...nothing. Put the same sim card in another phone right next to it, LTE.
What else can I do? thanks in advance

Have you installed an app recently that is messing up the phone? Have you checked to see if LTE is active on the phone? *#*#4636#*#* and check your phone info. Could always try flashing another radio.

Why does everyone start flashing radios and performing hard resets on their phones when a signal problem shows up? Wouldn't it be wise to contact Verizon first and make sure it isn't their problem? If you haven't changed anything on your phone, there's a 99% chance that verizon is having an off day.

nothing comes to mind that i would of installed that triggered this.
tried different radios.
called verizon to see what they can do. Looks like I can get a replacement phone shipped out. Now to return to stock. thanks.

djxstream said:
called verizon to see what they can do. Looks like I can get a replacement phone shipped out. Now to return to stock. thanks.
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I'm surprised the VZW rep didn't tell you that it's because the 4G sim cards are paired with your phone. I tried to swap 2 4G phones on my account in the past and I was told that the 4G cards are associated to the phones and they would need to send me out new 4G sim cards. This was a while ago, so I'm not sure if it's still valid, but I would think that they'd have a way to re-link the sim cards on their end.
Good luck with this.

[Q] Vzw Sch-i535 won't activate on vzw network...

Hey Guys!!!
I wish there was a quicker way to get all this out so let's get started:
A few weeks ago, I bought a Verizon Samsung Galaxy S3 from a coworker. When she gave me the phone, she left the sim card in the phone. So I made a test call. Forgetting that sim cards store info about the plan and such other important info, I trashed her sim card and went to a corporate Verizon store for my own sim card. I couldn't use my sim card because my other phone is an iPhone 5 that has a nano sim card and I didn't have a sim card adapter. As soon as the Verizon representative put the sim card in and started up the phone the activation screen popped up and started to activate, finally realizing the activation was taking extremely longer than normal the vzw rep told me to let it continue to activate while you go home, if it doesn't work try again. So I did what I was told, needless to say the phone would never activate. So I called customer service to get my iPhone 5 activated since the Galaxy s3 wasn't working. I was then told that it couldn't happen because my service was stuck in a switch that wouldn't end until midnight and then I could call the next day to reactivate. The next day after customer service sent me another sim card the same thing happened. After going through 4 sim cards the same thing happened. I then called Samsung Support and sent my phone to them, they claimed it was fix but the only thing that was done was they upgraded my firmware to 4.1.2 and fixed my charging port which wasn't messed up since the phone charged before I sent it off. At my wits end I got desperate, I cut up on of the "damaged" sim cards and put it in my iphone 5, immediately it activated itself without me even having to log on the vzw website. I then took the sim card out and put it back into the galaxy s3 with the sim adapter I purchased and the activation box never came up. Instead I called customer service and they tell me that the iphone 5 is still active on my account even though the iphone 5 has no sim card in it and is turned off. The online vzw tech informed me that the system wouldn't let them switch the imei numbers on the phone. Long story short I have what I think is an unrooted phone that won't activate.
P.S. The phone isn't lost or stolen. I asked them and he said no them system would've flagged the phone.
My questions are what do you guys think is wrong with the phone? Is this normal? Can it be fixed? If so, how? What would you do? What should I do?

to moderators...
me2cute2c said:
Hey Guys!!!
I wish there was a quicker way to get all this out so let's get started:
A few weeks ago, I bought a Verizon Samsung Galaxy S3 from a coworker. When she gave me the phone, she left the sim card in the phone. So I made a test call. Forgetting that sim cards store info about the plan and such other important info, I trashed her sim card and went to a corporate Verizon store for my own sim card. I couldn't use my sim card because my other phone is an iPhone 5 that has a nano sim card and I didn't have a sim card adapter. As soon as the Verizon representative put the sim card in and started up the phone the activation screen popped up and started to activate, finally realizing the activation was taking extremely longer than normal the vzw rep told me to let it continue to activate while you go home, if it doesn't work try again. So I did what I was told, needless to say the phone would never activate. So I called customer service to get my iPhone 5 activated since the Galaxy s3 wasn't working. I was then told that it couldn't happen because my service was stuck in a switch that wouldn't end until midnight and then I could call the next day to reactivate. The next day after customer service sent me another sim card the same thing happened. After going through 4 sim cards the same thing happened. I then called Samsung Support and sent my phone to them, they claimed it was fix but the only thing that was done was they upgraded my firmware to 4.1.2 and fixed my charging port which wasn't messed up since the phone charged before I sent it off. At my wits end I got desperate, I cut up on of the "damaged" sim cards and put it in my iphone 5, immediately it activated itself without me even having to log on the vzw website. I then took the sim card out and put it back into the galaxy s3 with the sim adapter I purchased and the activation box never came up. Instead I called customer service and they tell me that the iphone 5 is still active on my account even though the iphone 5 has no sim card in it and is turned off. The online vzw tech informed me that the system wouldn't let them switch the imei numbers on the phone. Long story short I have what I think is an unrooted phone that won't activate.
P.S. The phone isn't lost or stolen. I asked them and he said no them system would've flagged the phone.
My questions are what do you guys think is wrong with the phone? Is this normal? Can it be fixed? If so, how? What would you do? What should I do?
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Feel free to delete this post. It doesn't seem as if anyone cares to answer my question. Thanks anyway.

No one is answering the question because we have no answers for it. Also don't expect us to answer as soon as you post as like you we all have a life and that is more important so we will respond as soon as we possibly can.

Sounds like a issue with your line. Someone who knows what they're doing at vzw probably needs to submit a trouble ticket for you.
Sent from my SCH-I535 using xda app-developers app

[Q] StraightTalk No Network Available... Any suggestions

Yesterday, I received a new StraightTalk MicroSIM (ATT compatible) for my new Nexus 5. I have been using a StraightTalk T-Mobile compatible one that I used in my old phone. I activated the new SIM, using the automated phone system. This morning I saw that my phone still had no service. That is, zero bars, I cannot make calls or text. Of course data doesn't work either. I logged into my account and it said that the transfer to the new SIM is complete. So I called StraightTalk and was transferred 5 times to people who did the same trouble shooting with me every time. Their trouble shooting: power off your phone, take out your SIM and then start it back up. Then they said they need to send me a new SIM card.... Here is my issue, I feel like they don't know what they are doing so their answer is just to send me another SIM.
My question: Did anyone else have this experience or ideas on getting the phone to work? I've tried different APNs with no different results.

Okay, this is odd. I figured, since I won't have phone service for a while, I would root my phone. After I rooted my phone, everything works. I can make calls and data works. Not sure what changed but when the device was rooted, it also did a factory reset. After 50 minutes of crappy customer service, I think I'll just take the new SIM card they are sending.

Takes a while for them to activate it sometimes. I was with customer services for 2 hours trying to activate my Sim card because it wouldn't let me online.
Their customer service, signal penetration might suck, but it's way cheaper, which I'm good with.
Sent from my Nexus 5 using xda app-developers app

I wonder if maybe that is what happened but I think it probably had to do with the factory reset.
I do want to post one final thing since everything has played out today... On the phone I asked them to expedite the package since this is my work phone and ONLY phone. Today, FedEx delivered a new SIM card... it was the card only. No other packaging or information. It was the wrong SIM... I needed a micro and they sent a regular SIM... but at least they tried. After receiving the SIM today, I don't feel so bad about the situation. Things may have been different if my phone didn't miraculously start working. I would have had to cut down the regular sized SIM... to find out if it is an ATT or Tmobile version... it's probably the Tmobile versions, since I ordered the ATT version. Thats how things go... have a good day!
READ THE NEXT POST FOR CONTINUED ISSUES

*** I'm going to keep posting my experience, in case anyone else can find the information useful. ***
My service should have Auto-Refilled today. However, when I went to make a call, I found out my service was deactivated. I thought maybe Auto-Refill was disabled when I transferred to the new microSIM. Unfortunately, after spending another 45 minutes on the phone with customer service, I found out that they activated the replacement SIM that they sent me... the one that doesn't fit my phone and appears to be a Tmobile SIM. So, instead of just re-activating the microSIM that was working yesterday, they have to send me another one. I confirmed with them that they will be sending an AT&T compatible microSIM. We will see what I receive.