Database Info

[Q] Random rebooting, not shutdowns.

I'm having a rather specific and odd problem with my captivate(s), three of them to be exact. First I bought the phone, upgrading from an Iphone 3g, and the first day it was great, the second day, in the evening, I noticed that it started this strange rebooting loop. The phone doesn't seem to power off because I don't see the Galaxy S symbol it just merely goes black then comes back and searches for the network, finds it, then a few minutes later goes black again, returns, search for the network, and so on. It keeps doing that over and over again. So I tried a factory reset the next morning just to make sure it wasn't a problem with any apps installed. The same rebooting loop happened. So I called a rep and dropped by the ATT store and they said it might be the sim card, which was very very old (still said cingular) so we swapped it. Same problem the next day. Okay so I went and I replaced the whole phone. The second day with Captivate #2, this rebooting loop occurred again. The reps told me that I might have gotten two bad ones and to exchange it again, so I did. And yet again I have the same problem. So here are some quick facts about the problem that I have learned. Total time span has been about 3 weeks.
-The most important thing to know about this issue is that the only thing that prevents the phone from going into this rebooting loop is if I enable flight mode, no network connectivity. I believe wi-fi is okay but whenever I disconnect from ATT's network it stops rebooting.
-Occurs more frequently at night/evening (only happened once in the morning)
-Is not affected by signal strength, full bars, low bars.
-Is not affected by installed apps (Had done factory resets and with my third captivate all I did was put the sim card in and put it in my pocket)
-Is not affected by battery status, low or full
-Doesn't seem to matter if I have a lot of things running or nothing running, the loop starts when I'm browsing, texting, in a call, or just locked in my pocket.
-Does not seem to be affected by charging source (wall, car, laptop, ps3/xbox)
Another thing to note is that I had an Iphone 3G with an unlimited data plan before this. The Captivate upgrade was done on another line on my family plan then given to me with a 2gb data plan. After talking to multiple reps over the phone, they said they had the wrong IMEI number (I have no idea what that means) but that leads me to wonder what else is wrong and is it a problem with the Captivates or ATT itself?
I really need some feedback because I'm about to just give up on this phone, which is heartbreaking because I fell in love it. My 30 days is approaching and if I am indeed returning it, it'll have to be very soon. What do you guys think?

[Q] HTC G1 unlocked no reception

I got a used G1 almost a year ago, unlocked it so I could use it with AT&T and it had been working without any trouble until this past Sunday. I was running 1.6 for the longest time and never got around rooting it or installing mods. Suddenly, after I was on the phone for 2 hours, the G1 stopped receiving service. It was normal for the phone to drop service for a moment because of where I live, but after a couple seconds I usually get service again. I didn't.
I swapped out my SIM to an older phone and I was able to get service. So I figure it probably isn't a SIM card problem.
So I put the SIM back into the G1, browsed through the phone to see what was wrong and suddenly found that I had an "update all" button for the market. That's a feature only in 2.2, not in 1.6. I checked online to see if there were any updates to 1.6, but didn't find anything. I had no service, but a feature not in 1.6 on my phone.
After several hours of having no service, I decided to root my phone and install Cyanogen Mod 6. I thought maybe updating the phone might fix the problem. Hours later, I got CM6 up and running and used my brother's SIM to activate my Google account. It just so happened that when I was activating the phone, I had a small window of reception. After that, no service.
Monday I went to the AT&T store to see if they could help and my phone suddenly worked inside the store. I left it there for 15-30 minutes and service didn't drop, so I thought it was fixed. I left and just as I got home, my phone stopped working. So I drove back to the AT&T store to get a new SIM. Sad part is, my phone has service in the store. Again. I just don't get service anywhere else.
I got the new SIM, but I still didn't get service. My brother suggested that the antenna cable might be loose. So yesterday I went to pick up a screwdriver set that had the right size torx bits so I could open up the phone. The cables looked fine, but I pulled them out and plugged them back in. That didn't fix the problem. I still didn't have service.
Late last night, at the CS club at school, a guy with a G1 on T-Mobile put his SIM into my phone to see if it would work. After 5 minutes, my phone was able to connect. So I swapped my SIM back in, but no service. My G1 can see the networks. Right now, I can see AT&T under "Available Networks", but every time I try to connect, it says, "Unable to connect to this network at this time. Please try again later."
I'm using a spare phone right now, but I'd really love to have my G1 working again. Any help or suggestions would be greatly appreciated.

Same Problem
If it makes you feel any better.. 7 months later and I have the same issue. Been scouring the internet and XDA for hours without any resolution. Maybe AT&T is dumping IMEI #'s for devices not in their lineup? Older AT&T Sims seem to work though which is strange. Maybe this bump will get us some kind of response.

[Q] help with spontaneously unrecognized SIM card

Ok, I'm going to give you guys the whole background story just to cover all the bases.
I've had a Nexus S for about 6 months, never had a hitch. Rooted it, etc etc all fine and dandy.
About two weeks ago, I updated it to CM 7.1 RC1. So far so good.
I've always had the same Vodafone SIM card, which has accompanied me through a couple of phones. Last week, I went to London and bought a UK pay as you go card, to use data without roaming. Perfect. No problems whatsoever.
So, to make it clear, I never had problems with my original (portuguese) SIM card, nor with the british one I had just bought.
However, it was upon my return that I realized I had forgotten my SIM card at my friend's house. I quickly stopped by the Vodafone store at the airport, where they promptly gave me a new SIM, ready to use within a couple of hours.
Since then, my phone after a short period of being on, spontaneously fails to detect the SIM card/no longer recognizes it. I've tried scanning for networks in the settings, but it won't let me register again. It takes a reboot to get it working. Thing is after a couple of minutes or hours, it happens again.
I have since exchanged the new SIM card with a newer one , also from Vodafone, albeit a different store. Yet, the problem persists.
I didn't alter any settings between Portugal-UK-Portugal, so everything should be exactly the same. Does anyone know how to solve this or why this happens?
Faulty phone?
Faulty radio?
Faulty SIM cards?
ROM bug?
Any help is appreciated.

[Q] Network Signal In and Out with Reboots

I searched and did not see anyone else experiencing this issue. I have a Black 32 GB stock rooted. It worked fantastic for about 2 weeks and then all of a sudden I noticed the following:
Day 1: No SMS received. I was on WIFI and had network signal in the notification bar but did not receive SMS that were sent to me.
Day 2: No Cellular Signal. I looked at the APN and it had disappeared. I attempted to add it again and reboot the phone and it wouldn't add. The phone began rebooting on its own and continuing with a bootloop after running for about 10 seconds it would reboot again. It did this throughout the day. I called Google and they had me do some soft and hard resets. After the soft reset the phone would connect right after startup then disconnect after 2 seconds and reboot itself. I hard reset the phone and relocked the bootloader and reinstalled factory recovery and it is still doing it.
Google has given me authorization for an exchange but I was just wondering if anyone had any ideas because I'd rather not be without a phone for 2 weeks.
BTW I am on Straight Talk

I had a similar issue
I had a similar issue. After a month of functioning normally, my Nexus(rooted using CFroot, stock ROM, T-Mobile) lost the ability to get reception. First, it showed network signal, but cell access was not functional. A few hours later, bars dropped to zero, and it seemed like I could only get reception in the strongest signal areas. I would get signal sporadically when driving, but never when I was stationary. The phone never had problems with rebooting though.
After spending a day trying to fix it, factory reset, relock, flashing a factory image, I called Google, and they warranteed the phone.
nebrando said:
I searched and did not see anyone else experiencing this issue. I have a Black 32 GB stock rooted. It worked fantastic for about 2 weeks and then all of a sudden I noticed the following:
Day 1: No SMS received. I was on WIFI and had network signal in the notification bar but did not receive SMS that were sent to me.
Day 2: No Cellular Signal. I looked at the APN and it had disappeared. I attempted to add it again and reboot the phone and it wouldn't add. The phone began rebooting on its own and continuing with a bootloop after running for about 10 seconds it would reboot again. It did this throughout the day. I called Google and they had me do some soft and hard resets. After the soft reset the phone would connect right after startup then disconnect after 2 seconds and reboot itself. I hard reset the phone and relocked the bootloader and reinstalled factory recovery and it is still doing it.
Google has given me authorization for an exchange but I was just wondering if anyone had any ideas because I'd rather not be without a phone for 2 weeks.
BTW I am on Straight Talk
Click to expand...
Click to collapse

flmz said:
I had a similar issue. After a month of functioning normally, my Nexus(rooted using CFroot, stock ROM, T-Mobile) lost the ability to get reception. First, it showed network signal, but cell access was not functional. A few hours later, bars dropped to zero, and it seemed like I could only get reception in the strongest signal areas. I would get signal sporadically when driving, but never when I was stationary. The phone never had problems with rebooting though.
After spending a day trying to fix it, factory reset, relock, flashing a factory image, I called Google, and they warranteed the phone.
Click to expand...
Click to collapse
It just seems so much like a software issue as opposed to hardware that it surprises me they are willing to warranty it... but I guess I'm not the expert.
How long did it take you to get your replacement phone?

nebrando said:
It just seems so much like a software issue as opposed to hardware that it surprises me they are willing to warranty it... but I guess I'm not the expert.
How long did it take you to get your replacement phone?
Click to expand...
Click to collapse
I got a replacement phone pretty quickly. The phone shipped the day after I ordered the replacement, but YMMV.
Why do you think it was a software issue? The problem persisted after I switch back to a factory image. The replacement phone, running the same software does not have the same issue.

flmz said:
I got a replacement phone pretty quickly. The phone shipped the day after I ordered the replacement, but YMMV.
Why do you think it was a software issue? The problem persisted after I switch back to a factory image. The replacement phone, running the same software does not have the same issue.
Click to expand...
Click to collapse
That makes sense that it was a hardware issue. I guess it could be a faulty radio or something. I'm glad to hear you got your device shipped so soon. Did you end up having to pay shipping?

I ran a nexus 5 for about 4 days and went through two of them both having issues holding a signal. Both phones would start with LTE and then drop to 2g go to 3g and then 4g back to no bars and then 2g and 3g. I was stock all the way and I wish the nexus 5 worked better. It could be a software issue as when I took the OTA to 4.4.2 it became worse. All the areas I was in while this happened were areas that were supposed to be strong for 4g and LTE.
That said I I need a phone that is a bit more reliable even though I'm on T-Mobile. I switched to the LG G2. It has a better antennae and doesn't keep bouncing between modes when in various areas.

Simcard isn't detected sometimes

My already 3 years old nexus 5 is working great, except that I have some troubles with my simcard. My phone isn't detacting it sometimes in the middle of the day, without any proper reason and then I have to restart my phone several times to make it work again. I already tried taking out the simcard and putting it back in but it isnt really helping. I also have the problem that my phone isn't really accessing the internet. Even though the 4G symbol is there I don't have a connection, the only thing that helps at these moments is to turn on and off the airplane mode, that way I can access the internet for a quick time, enough to refresh a web page or send some whatsapp messages. I already tried to tape that area where the simcard is placed to make it more stable, without any success.
Does anyone have an idea what to do? I don't really want to buy a new phone since the n5 is working great for me.

Hey,
had exactly the same with my N5. Not sure if it's related to a securtity update or not. I was not able to get it work again. Probably it's getting worse for you with time. There are some threads around xda dealing with this problem, but - at least for me - there no solution yet.
regards

Same problem here since a few weeks.
If you have updated the radio to the last version, and if you have already tried and got the same issue with another sim card, then it may be a motherboard issue.