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Antenna Issue : No Network Access

Ok so this has happened every night I have had the Captivate (3 nights), I go to bed at night and in the morning where my signal bar should be I have a circle with a slash through it (no network). When I go to bed I will have like 2-4 bars of service but something must happen and I lose all network functionality. I have to restart the phone which solves the problem but is a serious pain. This also happens sometimes randomly throughout the day.
Any ideas if this is a common problem with all Captivates or if it is a hardware or software issue?
I like this phone and if I can get it to work properly I love it more than my iphone but not getting service is a buzz kill and I will return it. (Bought it unsubsidized for $500 because I couldn't deal with my iphone anymore)
Note: I live in Tampa which generally has good AT&T service and have had no other problems with other phones

Did you turn off the phone and remove the sim card for a few minutes?? According to an at&t rep doing that solves network issues.
The problem I had today was that the phone showed full bars, but I couldn't send a text or make calls. I took the reps advice and it's fine for now.

Well I will give that a try tonight and see how it goes and post back tomorrow with my results. I really love everything. Else about this phone and would be a shame of I had to get rid of it because of silly antenna issues. Thanks for the advice!
Sent from my SAMSUNG-SGH-I897 using XDA App

Are you sure you don't have any power saving apps on that are turning off the radio after a few hours? Did it happen when it was stock with no programs installed? Might try and flash it back to stock and see if that solves the problem.
Otherwise you could always walk into an AT&T store and ask for another one and see if it still happens.

Well last night it did the same thing after removing the sim for about 10 minutes before bed.
And as far as knowing if it did this before I rooted it.....well...I owned the phone for maybe 10 minutes after unboxing it before I rooted it. So I have no idea if it is because it is rooted. I don't have any apps on it for power saving purposes and nothing should be killing the radio. Problem is that it isn't like airport mode is on...its completely out of service and the only way to get service back is to reboot. Turning the radios on and then off again while the phone is on won't work...it must be a reboot.
I will probably end up returning it and trying one more Captivate before I look else where for a new phone. But after seeing this screen it would be hard to look at any other phone twice.

iphone4 would be a good screen alternative
ur antenna issue is unique and a new phone will probably fix it. id get that sim replaced too.

The new iPhone would be ok...but I can't go back to an iPhone. I have had 4 of them (2 first gens) and I am so bored of them. And I know people rave about the iPhones new screen but side by side with this phone I would take the extra screen real estate anyway.
And I did consider getting a new sim card too. I think I will wait until towards the end of my 30 day return policy and trade in for a new one.
Thanks for all the help guys

koppelmanwj said:
Ok so this has happened every night I have had the Captivate (3 nights), I go to bed at night and in the morning where my signal bar should be I have a circle with a slash through it (no network). When I go to bed I will have like 2-4 bars of service but something must happen and I lose all network functionality. I have to restart the phone which solves the problem but is a serious pain. This also happens sometimes randomly throughout the day.
Any ideas if this is a common problem with all Captivates or if it is a hardware or software issue?
I like this phone and if I can get it to work properly I love it more than my iphone but not getting service is a buzz kill and I will return it. (Bought it unsubsidized for $500 because I couldn't deal with my iphone anymore)
Note: I live in Tampa which generally has good AT&T service and have had no other problems with other phones
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I've had mine since July 18th and had never have this happen...till this morning. When I pulled it off charger I noticed the signal meter what a circle with a slash. Well, I dont get great reception in my apartment so it didnt phase me until I was on my way to work and still didnt have a signal. So, I turned it off and back on and then it had a signal. So I dont know what was up with that. I'll keep an eye on it tomorrow to see if its something thats going to happen regularly.

Hmmm...so I'm not the only one having this problem. Yeah I don't get superb service in my apartment but I have also never really had any other network problems with other phones.
Wonder if there is something that kills the network if you don't have a decent signal for a certain period of time. I just wish it wasn't everyday. On the brightside nobody will wake me up with emails or texts or calls.
Sent from my SAMSUNG-SGH-I897 using XDA App

Intermittant Signal Issues

I am currently running Ninja-0706, radio 26.06.06.30_M.
Intermittantly, my phone will drop out of H and start cycling through all the connections, edge, gsm, 3G etc. After cycling through, it will go to no connection at all where you see "no service" on the screen. And it will stay like that for several minutes, no matter where I am standing in my apartment, or even if i walk outside. Then all of a sudden, it will pick up H, full bars and it will stay like that.
So far, this issue has only happened a couple of times, within the past couple of weeks, and at my apartment. I have full wiped and flashed different roms, and reflashed the radio after the first time this happened, so this issue cannot be blamed on current said rom. This has led me to suspect that maybe there is an issue with the tower in my area. Twice I have called AT&T now about this issue. Both times they claim there have been no outages or issues with the towers in my area. They also claim that the closest tower to me is about 1 mile away, so there shouldn't be issues as such with a tower so close. I don't know anyone in my complex who is on AT&T to see if they are experiencing the same issue. So AT&T seems to think there might be an issue with the phone and i might need to do a warranty exchange. Any ideas before I flash back to stock and exchange it out?

While mine doesn't go that far, it'll cycle between H and 3G for no apparent reason.

Mine does weird **** sometimes, too, on Tue 04_11_M2 radio.
Just today I was sitting around browsing via WiFi, and bam, no signal. Most if the time it'll kick back in after a sec or two, but it stays like that until I intervene by toggling airplane mode, then, it'll be back to 3-4 bars or whatever.
Second time its happened over the last month, so no biggy.
In my house I get lots of signal variations overall, which I guess should be expected.

Well, my phone has done it twice since OP. I just flashed back to stock and downgraded to s-on. I'm going to see about an insurance claim.
Update: Just got off the phone with AT&T. They said that this issue would need to be handled by the warranty dept. So got back on the phone with tech support and they suggested that I go into an AT&T store and have the sim card replaced before they replace the phone, as the sim card itself might be causing this issue. It seems plausible because the sim card is needed for a connection to the network.

[Q] complete signal loss

Iv had the AT&T One X since the 4th and so far I love it! I haven't had any wifi issues or bootloops or anything, the only problem I'm having is the phone will randomly lose signal completely (0 bars, little x next to the signal) and wont get it back unless I put it into airplane mode and turn it back off, or reboot the phone. In the 6 days Iv had it it's lost signal 3 times, once on the road where I normally get at least 3-4 bars, and the other 2 happened at some point over night while I was asleep. Has anyone else been having this problem? Also do you think it's a software/radio problem that can be fixed in a update, or would it be hardware in which case I should take it to the store and exchange for a new one.

I've had this problem myself. Had the phone for 19 days now and I think it's happened to me 3 or 4 times.
I can guarantee it's fixable with a software update, even if the problem is hardware-related. At the very least, the software could detect the lack of signal and automatically cycle in and out of airplane mode to fix the problem without user interaction. But I'm sure whatever fix we get will be much more reliable than that.
WHEN we get the fix is another question...

Thanks for the reply. I figured it might be a software issue since you can cycle airplane mode and get it back and I don't really want to take it down to the AT&T store for an exchange in fear I wined up not able to set up gvoice or start getting wifi issues and the like lol. so far the signal drops are far and few in between making it an annoying issue rather than a critical one, and I read we've got root now so even if HTC/AT&T twiddle their thumbs and pretend nothings wrong I'm sure the community can save the day lol

I would swap it out Azure. My first HOX did exactly this, and I saw it reported elsewhere on a number of other devices. To me that says it's most likely a bad radio flash on some handsets. I suppose you could try and flash the RUU that was posted, as it most likely includes the radio as well.
I got tired of all my calls going directly to VM without ringing. And not being able to send out texts. My replacement works much better (or rather, how it should've from the beginning).

agentdr8 said:
I got tired of all my calls going directly to VM without ringing. And not being able to send out texts.
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Click to collapse
Was this problem intermittent?
My phone has been doing this randomly, except it never went to voicemails, just hung up after like 30 seconds.
Wondering if I should switch it out also.

Had this problem for a day. Took my phone to the at&t store and they changed out the sim card and I haven't had a problem since.
Sent from my HTC One X using XDA

usfslacker said:
Had this problem for a day. Took my phone to the at&t store and they changed out the sim card and I haven't had a problem since.
Sent from my HTC One X using XDA
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Click to collapse
I never thought about the sim card being a possible problem...might run up to the store when I get the chance and swap my sim out and see if that fixes it, if not I'll just swap the device out and hope all's well

The CSR actually swapped a new micro sim first, since the one provided via online sales was an older one (most likely from the iphone 4/4s batch). It didn't seem to fix the problem though.
And yeah, the problem was very intermittent. One second it would be working fine, and the next it would show the "x". Sometimes the bars would come back immediately, other times it wouldn't until I rebooted or cycled airplane mode. Luckily it happened while I was at the store; it's much easier to convince a sales rep to swap a phone when they can witness the issue(s).

Yeah it's only happened to me twice since I got it on the 4th... it'll be very hard for me to convince them that there's an issue haha... maybe I'll head down there if it happens at a time when I'm not in class or something. I'm sure if I mention returning it/their policy I'll get a swap.

agentdr8 said:
The CSR actually swapped a new micro sim first, since the one provided via online sales was an older one (most likely from the iphone 4/4s batch). It didn't seem to fix the problem though.
And yeah, the problem was very intermittent. One second it would be working fine, and the next it would show the "x". Sometimes the bars would come back immediately, other times it wouldn't until I rebooted or cycled airplane mode. Luckily it happened while I was at the store; it's much easier to convince a sales rep to swap a phone when they can witness the issue(s).
Click to expand...
Click to collapse
next time my phone drops signal I'll take it into the store and see about a sim swap in hopes that'll fix the issue if not then I'll reluctantly swap the unit out (I've grown rather attached to this one xD)
**EDIT**
strange...woke up today and my phone completely lost signal again, normally there's a few days between each event but this is the first time it's happened twice in a row =\

So it happened again, I'm going to go get it switched... but it says on the Mobile network section of settings, "Disconnected because service is unavailable."
There is clearly almost full signal strength, and I have never been without service where I live.

I was expereincing constant network drops all of yesterday due to an outage. However, it's back to normal for me today. So it may be possible there's an outage near you as well.

I think it is more AT&T than your phone. I was in down town buffalo at a swim meet with 5 bars of hspa+ on my blackberry bold that has a great radio. I had data but it was slow dial up slow. There were maybe 100-200 people at the meet and it was at a community college. The only other time I had this was when I was in a car that was driving by the buffalo bills stadium. Voice worked but I had no data. I guess too many people using their cell phones.

Definitely not AT&T, my SE Xperia x10 worked perfectly fine, never had any trouble with signals.

I also encounter the intermittent signal drops on my 4 days old AT&T one x.
It seems to me that the One x doesn't hold signal as good as the iphone, my 4 and 4s usually get around 2 bars in some really remote locations of the building I work. But the One X just drops signal completely. I'll see if I can do a sim swap like some others suggested.

I'm starting to think it could be an issue with lte phones because the same thing was happening to me on my galaxy note with 2 different sim cards and 2 different devices and now it's happening on my hox
Sent from my HTC One X using Tapatalk 2

it has happened to me 3 times in 5 days. All 3 times I was either:
1. in a poor reception area and it came back on its own, i did not have to use airplane mode.
2. was using BT streaming in car and using car charger, once car charger was unplugged, signal came back.

One X has issues
Definitively problems with the phone.
I have three.
They just drop signal completely. One will work, the other will not. Only way the signal will come back is if you turn the phone on and off again. I love everything about this phone....except it isn't a very good phone.
Also, typically when I turn the phone back on, that is when I get my text messages. Nice.

Yeah I figured out it happens when I lose signal (a couple buildings on my schools campus don't get reception), and then the signal won't come back until I reboot or airplane mode.. this is after a sim swap.
Oh and do I need the box my phone came in to swap it?
Sent from my HTC One X using XDA

I have had this issue as well being on the Rogers (Canada) network. I started a thread as well and my theory is there may be a hardware issue reading the SIM cards.
Every now and then I get a "preparing SIM" message pop up on my screen. Also, I lost signal once and in frustration I slapped the phone into my palm VOILA! signal came back full.
This is the second One-X I've gotten from Rogers so there may be a design flaw somewhere. The problem is this behavior only pops up intermittently and cannot be recreated at will. This makes troubleshooting very difficult and practically unprovable in the eyes of providers.
Hopefully there are more reports of this problem and the carriers push back on HTC to resolve the problem.

Verizon LG G5 (VS987) dropping data connection

Hey guys,
I recently got an LG G5 last month. The phone was running pretty darn well until about a week and a half ago. Before I go into detail about my problem, I would like to point out that this is the 3rd 4G phone I've ever had through Verizon, but this is the FIRST time I've encountered this issue.
Anyway, on to the issue. My data signal is dropping TREMENDOUSLY. In areas where I used to have a moderately weak 4G signal I'm now dropping all the way to 1X or no signal whatsoever. The troubleshooting I've performed consists of the following:
1) Rebooting the phone
2) Toggling mobile data off and back on
3) Toggling airplane mode on and back off
4) Experimenting with different network types (Global and CDMA/LTE)
5) Booting into safe mode to see if any 3rd party apps are causing the problem
6) Taking the SIM card out and putting it back in
7) Replacing the SIM card altogether
The only one of these techniques that showed promise was replacing the SIM card. The phone seemed to work well for a few hours, but later in the evening it went back to it's old problems.
I've searched online for this issue, and I've seen several other cases of this with no real solution. Here is a list of links to other people's complaints:
(The first 2 links are for the Verizon variant, the last 2 links are regarding G5's from other carriers)
https://www.reddit.com/r/lgg5/comments/4n6wdt/my_verizon_lg_g5_keeps_dropping_calls_doesnt_stay/
http://www.timothyhoogland.com/2016...-like-new-devices-more-like-russian-roulette/
https://community.ee.co.uk/t5/Andro...or-7-times-a-day-dramatically-low/td-p/428099
https://support.t-mobile.com/thread/131390?start=0&tstart=0
Anyway, Verizon tech support is pretty much useless. When standard troubleshooting doesn't work, they typically have two final "troubleshooting" techniques: 1) Factory data reset 2) Warranty replacement
I refuse to do a factory data reset because out of all the phones I've ever owned, a factory data reset has never served as a permanent solution, EVER. Occasionally, it might fix the problem for a short period of time, but it inevitably goes back to it's old problems. Not to mention, it's such a pain to get my phone set back up the way I like it after the reset.
The warranty replacement seems like a waste of time too because of other people having the same issue. It sounds more like a problem with phone design rather than my specific device.
Anyway, do you guys have any troubleshooting suggestions? Have any of you experienced the same thing? If you have experienced it, PLEASE call Verizon tech support at least once a day and report the issue. It's currently not categorized as a "known issue" because it's not received enough "hits". However, once enough people report the same issue enough times, Verizon deems it as a "known issue", and they get off their butts to find a solution to the problem. We need a ton of people to complain about this.

I have what sounds like a connected issue.
Mine started off by going into global mode then would loose data connectivity. So figuring there was something wrong with the phone but also figuring there was an easy walk around (even though it was a pain in the butt that shouldn't happen) I made a shortcut to take me straight into System Select so I could change it back to CDMA/LTE. This worked for a while. Then the phone started doing the same thing; no network connectivity at all, even while being on CDMA/LTE. So what I ended up having to do there was go to into System Select change to Global wait for a couple of seconds then change it back to CDMA/LTE. This would fix it for a couple of days. I think at that point the phone decided it was being too easy on me because next, it started doing this to me every day. Frustration level went way up! But, the phone wasn't quite finished with me yet. Now that it was doing it once a day it started loosing signal bad enough that it started to miss SMS and Phone calls as well. This was pretty much the last straw. I waded through Verizon's level 1 tech support and was then forwarded to level 2. Surprisingly enough, level 1 did more than level 2. At the end of level 2, I was referred to LG's tech support. LG's guys were a joke. They had me do a Factory Restore, that was it. He had me do that and said if it didn't work go back to Verizon. So back to Verizon I went. They sent me a new (read factory refurbished phone) to replace my phone that I had purchased brand new. The "new" phone worked great for a few days then it started doing the switching to global thing again. So far it's stayed there for about a month now.
Long story short on my experience: Everywhere I went they said, "I've searched all over the net and I can't see anybody else having this issue." You need to contact Verizon and wade through their inept tech support. If you don't they'll never know the phone has an issue. I tried a bunch of stuff myself, including switching the SIM card. The only thing I haven't done is drop a new battery into the phone, which I'm still considering doing. But if they think it's just me they aren't going to care. They need to know there are more than one of their customers with this issue!

Sprint Persistent Network Drops

Normally I wouldn't post this sort of thing, but over the last few months (maybe years) this issue continues to persist. It has occurred on not only my S6, but also my Optimus G before I upgraded.
The issue appears, as is visible in the image below, in the form of a network drop. This drop occurs on both 3G or 4G networks for up to a minute sometimes, every few hours or some days not at all. The phone doesnt show a drop (the little 4G icon stays visible), but nothing on the phone web browser is available. The device is rooted and I very often have my hotspot active and a device or two connected, hence the dos window screenshot.
The issue occurs irrespective of location; before I moved last May it happened at my last place, a good 40 minute drive away. I have recently been pulling my hair out one by one as these network disruptions have become insanely annoying. The conspiracy theorist in me wonders if maybe Sprint is pissed at the 150-250GB+ data usage monthly and is seeking to punish me, though if they really didnt like it, they'd just drop my contract. I have not noticed throttling; once the network is back the 4G returns with good speed.
Ive searched high and low for months, called sprint numerous times, dug through every google search page I can think of, looked here on xda, and have **** to show for it. Has anyone else seen these issues or heard of something like it? Im running out of brain for this issue...
Cheers,