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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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Click to collapse
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
Click to expand...
Click to collapse
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/
Click to expand...
Click to collapse
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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Click to collapse
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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Click to collapse
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?
Click to expand...
Click to collapse
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

[Q] Serious problem with g2x, no service baseband problem?

I seriously need help with this. My phone info is this
LG-P999
Android 2.3.3 stock
Baseband: M6600A-SCAUTNZ-2.0.9720T 1[JUL 15 2011 10:00:00]MP;TRULGE_08.09.02R_MDM.
Kernel Version: 2.6.32.9
The phone has all the information about the carrier but does not connect to the network, it even recognizes a network with -89dbm but does not connect.
I don't know what's happening. When you start the wifi calling app it works but can't sustain a connection on its own. I need your phones baseband info to compare. Also i noticed on the hidden menu accessible by dialing 1809*#999# when you go to the modem setting the following menus says:
QCRIL/Android log on/off: not implemented yet (RIL)
PDP Setting: not implemented yet (RIL)
and so on with the others. I need help from people with working g2x to check this and compare the values, cause i don't know what to do. I have flashed several roms eve the stock, and i have noticed that when i flash the v10f and connect the phone to the computer the lg tool recognizes the phone as if it had the v21e leaving me without the possibility to upgrade the software, I think it is because of the baseband on the phone. I sincerely ask for your help on this. Thank you

I'd try requesting a replacement, or trying the Update method for refurbs.
Sent from my LG-P999 using XDA Premium App

Well i have tried all existing methods and nothing, cause the lg tools recognizes the actual phone model which is p999dw and wont let me upgrade because of the baseband version, and as for a replacement this is a phone o got from craigslist.

daniel86bm said:
I seriously need help with this. My phone info is this
LG-P999
Android 2.3.3 stock
Baseband: M6600A-SCAUTNZ-2.0.9720T 1[JUL 15 2011 10:00:00]MP;TRULGE_08.09.02R_MDM.
Kernel Version: 2.6.32.9
Click to expand...
Click to collapse
You seem to have the most current version, which makes me wonder about your SIM card. Perhaps you need a new one if it is an older SIM or possibly damaged.

Well My sim card is only 2 months old, it came with my htc sensation, whe I put it on the sensation works but not on the G2x i have also tried it on my father's hd2 and also works, Thank you all for your response, I feel very lucky to be an XDA member.
I will go to T-mobile tomorrow to get another sim and test.

You try a hard reset yet?
If not just hold the volume up rocker and power button for like 10 seconds and it will reboot.

Today i got a new sim card and nothing, still the same keep saying no service, when i try to call says not registered on the network

Did you ever get this issue resolved I am having the same problem...exactly, got a different sim and now I want to try to re-flash the base band if possible? Does anyone know of this issue and any way to fix without dealing with T-mobile?

Unfortunately I had this and I tried everything, went to a T-Mobile rep and they tried trouble shooting, switching sims, hard reset, I even changed roms, went back to stock froyo and gingerbread and still nothing. I'm having a new G2X replacement shipped to me free of charge from T-Mobile already. Go to your T-mobile rep and ask him to fix it (he will try and fail and will open a case with you) then if you have warranty you can get a replacement G2x.

kharnage said:
Unfortunately I had this and I tried everything, went to a T-Mobile rep and they tried trouble shooting, switching sims, hard reset, I even changed roms, went back to stock froyo and gingerbread and still nothing. I'm having a new G2X replacement shipped to me free of charge from T-Mobile already. Go to your T-mobile rep and ask him to fix it (he will try and fail and will open a case with you) then if you have warranty you can get a replacement G2x.
Click to expand...
Click to collapse
Even if you didn't purchase the phone from T-mobile? I bought the phone from Craigslist.

XMarinE said:
Even if you didn't purchase the phone from T-mobile? I bought the phone from Craigslist.
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Click to collapse
I purchased my phone from some guy on Amazon, just try to go to a T-Mobile rep and don't tell them you purchased it off someone else even though they might be able to check.

Dial *#*#4535#*#* on your phone and give us screenshots of the phone status. Maybe that can give a clue as to what is going on. Scroll past your IMEI and do a screenshot (power and home) then scroll down to mid screen do another screenshot and then scroll all the way down and do a third screenshot. Post them here and maybe we can figure out what is going on. Did you make sure you have the correct RIL also? Some people with your issue have flashed CM7 nightly and then flashed back to another rom and this issue has gone away.

jboxer:
Will try...after a reboot or after I get the T-Mobile to load up again because that just gets me to the dialer again. I am in the process of making a video on Youtube and see if it helps resolve the issue...?? I SCREAM SANDWICH where are you...LOL!!

Do you have a tmo sim? U need to get the phone unlocked if u dont

Yes I do have a Tmo sim...and service.

You got took by the person on craigslist. Always test before you buy. #1 rule...
Sent from my LG-P999 using xda premium

T-Mobile is also now blocking IMEIs from the network. So that is also a possibility, especially when the phone is showing that it recognizes the network, but won't connect.
I think the only way T-Mobile will block the IMEI is if someone used installments to get the phone, and then the account canceled before the first payment.
Sent from my LG-P999 using XDA App

butterbeam said:
You got took by the person on craigslist. Always test before you buy. #1 rule...
Sent from my LG-P999 using xda premium
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Click to collapse
No..the phone did work when I tested it. It was not rooted or unlocked. It worked fine...all of a sudden it stopped? I can use any other carrier card and it will work flawlessly. I have a Straight Talk card and can plug it in and no problems..only the data is 2g(Edge) speed on the G2x. Calls and MMS and it shows AT&T as the carrier while the sim from Straight Talk is in. Only the T-Mobile one has an issue. I had the phone for more than 3 months without any problems. I don't think I got took if there weren't any apparent red flags at time of purchase. I took the sim from my old phone at time of purchase and said I want to check it out first and the previous owner agreed. I think the issue is with T-Mobile and the way their equipment works with LG G2x. I am posting a video on YouTube in the next few days to let people see what happens with different scenarios.

XMarinE said:
No..the phone did work when I tested it. It was not rooted or unlocked. It worked fine...all of a sudden it stopped? I can use any other carrier card and it will work flawlessly. I have a Straight Talk card and can plug it in and no problems..only the data is 2g(Edge) speed on the G2x. Calls and MMS and it shows AT&T as the carrier while the sim from Straight Talk is in. Only the T-Mobile one has an issue. I had the phone for more than 3 months without any problems. I don't think I got took if there weren't any apparent red flags at time of purchase. I took the sim from my old phone at time of purchase and said I want to check it out first and the previous owner agreed. I think the issue is with T-Mobile and the way their equipment works with LG G2x. I am posting a video on YouTube in the next few days to let people see what happens with different scenarios.
Click to expand...
Click to collapse
If the phone is working with Straight Talk (AT&T) and not T-Mobile then I do believe it is a blocked IMEI issue. The person that sold it to you probably stopped paying their bill. T-Mobile doesn't block the IMEI until they send the account to collection, which takes about three months or so. You can probably call TMO and ask them to check the IMEI and see if they blocked it (if the CSRs can check the blacklist database). This blocking of the IMEI is specific to T-Mobile only so it would not affect AT&T's network or using the phone on any other carrier in the world.

jboxer: Will check on that issue...thanks jboxer
---------- Post added at 02:25 PM ---------- Previous post was at 02:21 PM ----------
jboxer said:
If the phone is working with Straight Talk (AT&T) and not T-Mobile then I do believe it is a blocked IMEI issue. The person that sold it to you probably stopped paying their bill. T-Mobile doesn't block the IMEI until they send the account to collection, which takes about three months or so. You can probably call TMO and ask them to check the IMEI and see if they blocked it (if the CSRs can check the blacklist database). This blocking of the IMEI is specific to T-Mobile only so it would not affect AT&T's network or using the phone on any other carrier in the world.
Click to expand...
Click to collapse
Can I check any IEMI database? I checked one from a Australia database and it said the status is unlocked? Are there any United States places to check or do I need to contact T-Mobile?

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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Click to collapse
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] Rogers - 2nd handset, Preparing SIM message

My first One X was showing this "Preparing SIM" message periodically and I eventually had the phone replaced when connections to Rogers service would drop out. In order to reconnect a reboot was required.
My 2nd device although stays connected to Rogers service just fine but I am still getting the "preparing SIM" message ever now and then.
The Rogers support people could not say anything about the message but I did have them put it on my record that I am experiencing it in the even that there is a problem after the initial no haggle swap period has passed.
If you are also having this message come up I would suggest you call into support and have them note that you are having this issue. Not that you will need to have the phone replaced but in the even you do, it's there on your account.
Has anyone else seen this on their phone?

quadcom said:
My first One X was showing this "Preparing SIM" message periodically and I eventually had the phone replaced when connections to Rogers service would drop out. In order to reconnect a reboot was required.
My 2nd device although stays connected to Rogers service just fine but I am still getting the "preparing SIM" message ever now and then.
The Rogers support people could not say anything about the message but I did have them put it on my record that I am experiencing it in the even that there is a problem after the initial no haggle swap period has passed.
If you are also having this message come up I would suggest you call into support and have them note that you are having this issue. Not that you will need to have the phone replaced but in the even you do, it's there on your account.
Has anyone else seen this on their phone?
Click to expand...
Click to collapse
Hey i used to have this problem. When i was using Sense.. Try using Apex Launcher and let me know if you have the problem still.

I've got the issue from your first phone. Been wondering if it's a hardware or a software issue. Seems to happen more often when I am farther from toronto, getting a worse lte signal. Could be anecdotal though. Don't know if I should exchange it for another one
Using apex since day one
Sent from my HTC One X using Tapatalk 2

I have an AT&T hox...the same thing happens to mine. Also, on the notification bar, it's has a triangle with an ! in it and next to it says something about restricted access. At first I thought it was they were getting Jacksonville fl ready for lte...nope.

Same thing on mine. Was on the phone with Rogers today and after disabling LTE on my end and switching to HSPA+, my data has returned and is working normally now.
Beamed from my Rogers HTC One XL

just got off the phone with At&T and HTC technical support...their answer was
huh? Never heard of that...most probably sim card reader going bad...
Wtf...and it just did it again. Going to return this phone for another one tomorrow.
Sent from my HTC One X using XDA

Artimus009 said:
just got off the phone with At&T and HTC technical support...their answer was
huh? Never heard of that...most probably sim card reader going bad...
Wtf...and it just did it again. Going to return this phone for another one tomorrow.
Sent from my HTC One X using XDA
Click to expand...
Click to collapse
So, do you get the replacement Artimus? How's your replacement?
Last time I went to replace mine, the manager give me a hard time. He replace my sim card, but I still notice it at least once a day. Now, the situation is bad because this phone is out of stock.
Please let us know your experience. Thanks...

Update: I have since done a factory reset and haven't experienced the issue since. LTE is working fine on Rogers now too.
Sent from my HTC One X using xda premium

NO SIM 100, my patience, 0

Upon returning home from a business trip, the dreaded NO SIM error started creeping up on my phone again. 2.5 weeks in Salt Lake City, no issue. Back in TN, horrid NO SIM errors abound. I called Verizon tech support today, and he noticed I already exchanged the phone for a new one, along with a new SIM. One thing he mentioned, it looked like I was "roaming" in the system, so he reset some routers (his words) after having me pull the battery and wait a couple of minutes before powering the S3 back up. Sure enough, on the drive home from work, the phone had a NO SIM issue... so I unplugged the battery for the rest of the drive home. Once inside, I plugged the battery back into the phone, everything looked hunky dory, so I went about my business... and sure as s***, the phone gave me another NO SIM. So I contacted Verizon again, and she offered me any Android phone as a replacement. Now, I don't know if you guys have looked at the current line up for Verizon's Android based smartphones, but it's basically the Moto Razr or the Samsung Galaxy S3. I have not found a case that I absolutely love, so I have invested in quite a few so far, plus additional charging cradles, car mounts, etc... frustrating because I love this phone, but I use it for work, so I can't deal with this issue much longer.
If you had to select another phone to replace it, what would you go with? The new RAZR M? (lose NFC, smaller and crappier screen, etc) The RAZR Maxx?
Thanks, in advance.

No other phone on Verizon can touch the S3. Only phone that can be comparable is something that is not out yet.
Then when it comes out, they will tell you it is to new.

[email protected] said:
No other phone on Verizon can touch the S3. Only phone that can be comparable is something that is not out yet.
Then when it comes out, they will tell you it is to new.
Click to expand...
Click to collapse
Might hold out for the Note 2. Testing something currently... wondering if Go SMS is the issue, seeing as the problem seems to creep up with some sort of combination of texting and calls. Will update tomorrow.

Did you apply the latest update? It should have updated automatically OTA, unless you are running custom unlocked rooted whatever ROM. In that case go to dev section and download latest radio and flash it. Should fix that damn no SIM problem.
Sent from my SCH-I535 using Tapatalk 2

fearlesspaula said:
Did you apply the latest update? It should have updated automatically OTA, unless you are running custom unlocked rooted whatever ROM. In that case go to dev section and download latest radio and flash it. Should fix that damn no SIM problem.
Sent from my SCH-I535 using Tapatalk 2
Click to expand...
Click to collapse
Yep, already flashed last week. Tech Support told me tonight they have been fielding calls post patch showing it didn't fix the issue. If they are offering me any android of my choice, they are probably as flustered as I am. Almost went to a Rezound, a step backwards, I know, but I am at wit's end. Will see how the next week goes.

Sorry to hear. Try and hold out for a fix. I came from a rezound, and while I loved my HTC phones, this s3 is great. Too different to compare.
Sent from my SCH-I535 using Tapatalk 2

mdt73 said:
Upon returning home from a business trip, the dreaded NO SIM error started creeping up on my phone again. 2.5 weeks in Salt Lake City, no issue. Back in TN, horrid NO SIM errors abound. I called Verizon tech support today, and he noticed I already exchanged the phone for a new one, along with a new SIM. One thing he mentioned, it looked like I was "roaming" in the system, so he reset some routers (his words) after having me pull the battery and wait a couple of minutes before powering the S3 back up. Sure enough, on the drive home from work, the phone had a NO SIM issue... so I unplugged the battery for the rest of the drive home. Once inside, I plugged the battery back into the phone, everything looked hunky dory, so I went about my business... and sure as s***, the phone gave me another NO SIM. So I contacted Verizon again, and she offered me any Android phone as a replacement. Now, I don't know if you guys have looked at the current line up for Verizon's Android based smartphones, but it's basically the Moto Razr or the Samsung Galaxy S3. I have not found a case that I absolutely love, so I have invested in quite a few so far, plus additional charging cradles, car mounts, etc... frustrating because I love this phone, but I use it for work, so I can't deal with this issue much longer.
If you had to select another phone to replace it, what would you go with? The new RAZR M? (lose NFC, smaller and crappier screen, etc) The RAZR Maxx?
Thanks, in advance.
Click to expand...
Click to collapse
A fix is being pushed out today to address this issue. S3 is bar far the best phone you will find out there...

do you have a source about that?

Verizon is super frustrating. I switched from Sprint and got the Gnex, along with the "mute issue" where all of a sudden your microphone stops working during a call and you have to hang up. I've had the phone replaced and the replacement still does it so they offered me an "early upgrade" if I buy the S3 for $200.00. I did some research and found out about the no sim issue on the S3 so when I called back to tell them I didn't want an S3 they offered a RAZR M at $99.00 :/
I'm really considering breaking my contract with them to get a phone I like that works as it's supposed to.

Ya. This issue is really bugging me. I honestly believe there is a hiccup between the phone and the tower when a text is sent. I noticed at home that when I have wifi connected, and then send a text, the S3 will connect to 4G to send the message. At that point, something triggers in the phone and it loses connectivity with the SIM.
Not that this helps much... I explained it to level 2 support and they kept telling me how it was a new to them issue.
Sent from my big red Samsung Galaxy S3 using XDA Premium.

Droid M is somewhat close. I'd stay with it or wait for the Razr HD

DertyDOH said:
Droid M is somewhat close. I'd stay with it or wait for the Razr HD
Click to expand...
Click to collapse
Hmm, I'll check it out. The M seems a downgrade at this point.

mdt73 said:
Ya. This issue is really bugging me. I honestly believe there is a hiccup between the phone and the tower when a text is sent. I noticed at home that when I have wifi connected, and then send a text, the S3 will connect to 4G to send the message. At that point, something triggers in the phone and it loses connectivity with the SIM.
Not that this helps much... I explained it to level 2 support and they kept telling me how it was a new to them issue.
Sent from my big red Samsung Galaxy S3 using XDA Premium.
Click to expand...
Click to collapse
You're not kidding. I don't know if they REALLY don't know about these issues or they are just lying.
Tier 2 was who was helping me with the replacement phone and when I mentioned the No Sim error they said they had never heard of it and the only problem he's ever seen with an S3 is when a user doesn't turn off their old phone when activating a new phone :/

joe_sun said:
You're not kidding. I don't know if they REALLY don't know about these issues or they are just lying.
Tier 2 was who was helping me with the replacement phone and when I mentioned the No Sim error they said they had never heard of it and the only problem he's ever seen with an S3 is when a user doesn't turn off their old phone when activating a new phone :/
Click to expand...
Click to collapse
Ya, it amazes me that their "level 2" support still tries this excuse. Every time they try this with me, I ask them to tell me what the latest S3 software update addresses, and then the phone gets quiet, followed by excuses and them never hearing about it... even tho Verizon put out a patch to fix the issue.
Keep documenting it, tis the only way it's going to get addressed, or at the very least you will have ammo to get a new phone.

mdt73 said:
Ya, it amazes me that their "level 2" support still tries this excuse. Every time they try this with me, I ask them to tell me what the latest S3 software update addresses, and then the phone gets quiet, followed by excuses and them never hearing about it... even tho Verizon put out a patch to fix the issue.
Keep documenting it, tis the only way it's going to get addressed, or at the very least you will have ammo to get a new phone.
Click to expand...
Click to collapse
I'm sooo close to just paying the etf and switching to a gsm provider.
Sent from my Galaxy Nexus using Tapatalk 2

joe_sun said:
I'm sooo close to just paying the etf and switching to a gsm provider.
Sent from my Galaxy Nexus using Tapatalk 2
Click to expand...
Click to collapse
Have you tried the new HD modem for S3 yet?

Following guidance from the 2nd level tech after calling tech support, I stopped by the local verizon store today to pick up a new SIM. This is my third SIM, but she assured me there was a bad batch floating around the stores. We'll see... fingers crossed.

mdt73 said:
Following guidance from the 2nd level tech after calling tech support, I stopped by the local verizon store today to pick up a new SIM. This is my third SIM, but she assured me there was a bad batch floating around the stores. We'll see... fingers crossed.
Click to expand...
Click to collapse
A friend of mine had the same issue, we both have the GS3 and live in the same area. She gets constant sim errors while I've never got one and I switch between 3G/4G frequently. She recieved a new sim a few weeks ago and hasn't had an error since. Seems a lot of sims are incorrectly configured with Verizon's network, just an educated guess.
Sent from my SCH-I535 using xda app-developers app

Shibby87 said:
A friend of mine had the same issue, we both have the GS3 and live in the same area. She gets constant sim errors while I've never got one and I switch between 3G/4G frequently. She recieved a new sim a few weeks ago and hasn't had an error since. Seems a lot of sims are incorrectly configured with Verizon's network, just an educated guess.
Sent from my SCH-I535 using xda app-developers app
Click to expand...
Click to collapse
I am amazed. 24 hours, not a single NO SIM error. Maybe I was un-lucky enough to get two bad SIMs the first time...

mdt73 said:
I am amazed. 24 hours, not a single NO SIM error. Maybe I was un-lucky enough to get two bad SIMs the first time...
Click to expand...
Click to collapse
Still not a single no sim error. I am about 24 hours from saying it was a bad batch of SIM cards... never thought I would say that.