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losing cell network randomly

Lately I have been randomly losing all service, both voice and data. I'm pretty sure that it occurs while moving through an area/building where there is no service, then returning to an area where there should be service. But I'm not 100% sure this is only condition in which it occurs.
The problem is that the service is not coming back automatically. I have to reboot the phone. I've waited for up to 2 hours with nothing.
Any thoughts/suggestions on how to fix this?
I'm running stock, with rooting and sideloading enabled.

Cycling flight mode usually works and is way faster than a full reboot.

MillionManMosh said:
Cycling flight mode usually works and is way faster than a full reboot.
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Does nothing for me. Forgot to mention that. Cycled many times last night with zero luck.
I basically become an Unregistered Device, if I remember one of the errors correctly.

My even hang on setting to airplane mode - and must reboot to fix, and then disable airplane mode...

so there is nothing I can do to force the phone to re-register with the network?

I have found not a way

seems like I might be taking a trip to ATT to do an exchange. Can't have this happening.

You will be foolish to do so. It is not a hardware issue! I have it on another modem and rom. But happens only when I have my phone in areas without bad reception for a long time.

Mine happens during periods of brief connectivity.
That said, I stopped in at ATT just to see what they would say.
They suggested that my SIM card was going bad. I seriously doubt this had anything to do with it, but what the hell. The card I had was from my previous phone as I was too lazy to stop in and swap cards when I bought the phone.
New card, so far no loss of signal. Has only been 4 days though. After a few weeks, I'll know better if this worked or not.

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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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).
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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.

Fried Modem?

Quick version:
My phone got really hot and since then I've had no to very poor reception. Got a new SIM card from VZW and went back to stock (multiple times) with the same results.
Long drawn out version:
So I've had my phone for over a year (preorderd the keep my unlimited data plan) rooted it as soon as I could (though I think I waited a week or two) and have had no trouble loading various ROMs (ASOP and TW). A few weeks ago, when the Unofficial CM 10.2 came out I decided to try it (full wipe, coming from a CM 10.1 port) and while my battery drained very fast, it was stable. An update was released and I saw people were commenting positive on the battery life so I flashed the update (just flashed over). The next day my battery was draining even faster (full charge at 7pm, 30% by 10pm) so I charged it while at work. A few points through out the day I recall it getting warm (while idle with no apps open). Leaving work it got hot enough while in my pocket I had to take it out and pull the battery. After letting it cool down, the battery was dead.. let it charge up and did a full wipe to revert back to a CM 10.1 port (I think it was liquid but not 100% positive). Since then, my signal has been spotty though WiFi works. On a fresh boot, I'll have full LTE, then it drops down to 1x within 5 min... down to nothing after 10 min. I wasn't able to send or receive calls either (tested with my work cellphone, went straight to voice mail). I've tried flashing various modems (VRLG1, VRBMA2, VRBMF1) and tried going back to the CM10.2 with no luck... I then went back to stock (ICS) with similar results.
Thinking the SIM card may have been fried I called VZW and explained my situation (not mentioning that I was rooted, just the phone had overheated and I did a "factory reset"). With the wait on the SIM card, I activated my old HTC Incredible just so I can have a usable phone. I got the replacement SIM card today (still on stock ICS) and it was able to activate. But after 5min my signal dropped down to nothing. Enable/Disable Airplane mode the signal goes back to 4G and after 5 min (estimate) it drops back down. I then tried a stock JB (through odin) and this one states 4G available but the browser just hangs and doesn't load. I was able to send and receive calls for one attempt, the next just hangs when sending, and receiving goes right to voice mail.
I'm to the point where I'm thinking something got fried with the radio and need to buy a replacement phone. Just figure I should post something here and get a solution that may save me a few hundred bucks.
If anyone has any advice on this I would greatly appreciate it.
Thank you,
-Mike

I just experienced something similar. I got my S3 in Feb and it's been just fine. Last week, I discovered that I was not receiving phone calls (people who called me said my phone would ring until it eventually went to voicemail but my phone would be sitting next to me and never ring). I then found that I could not hold a call for more than 20 seconds before the call would start breaking up and drop. I could hold a choppy call if on speakerphone or BT but the second I would pick up the phone, it would drop the call and state either "Call was lost" or "No signal".
I had not made any software changes to my phone so there did not appear to be any reason as to why this started. I tried everything from changing roms, reverting back to stock, changing basebands, etc. Nothing seemed to work. The strange thing is that I had a perfect wifi and 4G connection.....the signal was strong and would not fluctuate in this case. I would receive text messages just fine as well but making or receiving a call would just kill the signal.
I was able to get by using Spare Phone and having people call my Google Voice # (even on a 4G connection, calls worked very well). I called VZW to troubleshoot (obviously not mentioning I was rooted or unlocked) and after doing some testing with them, they agreed a new sim would not help and it was a physical defect with the phone. Under normal circumstances, they would have sent me a CLNR but, unfortunately, I had a small crack in the corner of the screen (completely unrelated to this -- happened months ago). Since I have insurance, they advised that I just file a claim with Asurion for the cracked display and pay $99 for a new device. Sending it back to VZW would be a gamble -- if they didn't see the crack then it would have been a free CLNR. If they did see it, then it's a $535 charge for the replacement. I ended going through Asurion who sent me a brand new phone and it's working beautify.
Not trying to hijack your thread by sharing my story but the only thing I can think of that may have caused my issue was that I used an external battery to charge the phone while it was off. I noticed when I unplugged the device from the battery, the phone still thought it was being charged (LED light still light and charging animation was still going). It stayed like that for around 5 minutes until I pulled the battery and eventually started the phone back up. I noticed the issue with reception about 3 days after that. It's possible that when the phone is off, either the charging circuit or software isn't properly regulating the power which may result in an overcharge leading to damage of the components.
Did you charge to full while the phone was off using a non-oem charger? If I were you, I would try calling VZW and see if they will offer you a CLNR assuming the phone is still in good condition. I'm willing to bet there is nothing you are able to do to fix the issue at this point ---- you could try taking out the screws on the back and checking for a loose antenna connection but it sounds more like electrical damage based on your information.

mdecker said:
Quick version:
My phone got really hot and since then I've had no to very poor reception. Got a new SIM card from VZW and went back to stock (multiple times) with the same results.
Long drawn out version:
So I've had my phone for over a year (preorderd the keep my unlimited data plan) rooted it as soon as I could (though I think I waited a week or two) and have had no trouble loading various ROMs (ASOP and TW). A few weeks ago, when the Unofficial CM 10.2 came out I decided to try it (full wipe, coming from a CM 10.1 port) and while my battery drained very fast, it was stable. An update was released and I saw people were commenting positive on the battery life so I flashed the update (just flashed over). The next day my battery was draining even faster (full charge at 7pm, 30% by 10pm) so I charged it while at work. A few points through out the day I recall it getting warm (while idle with no apps open). Leaving work it got hot enough while in my pocket I had to take it out and pull the battery. After letting it cool down, the battery was dead.. let it charge up and did a full wipe to revert back to a CM 10.1 port (I think it was liquid but not 100% positive). Since then, my signal has been spotty though WiFi works. On a fresh boot, I'll have full LTE, then it drops down to 1x within 5 min... down to nothing after 10 min. I wasn't able to send or receive calls either (tested with my work cellphone, went straight to voice mail). I've tried flashing various modems (VRLG1, VRBMA2, VRBMF1) and tried going back to the CM10.2 with no luck... I then went back to stock (ICS) with similar results.
Thinking the SIM card may have been fried I called VZW and explained my situation (not mentioning that I was rooted, just the phone had overheated and I did a "factory reset"). With the wait on the SIM card, I activated my old HTC Incredible just so I can have a usable phone. I got the replacement SIM card today (still on stock ICS) and it was able to activate. But after 5min my signal dropped down to nothing. Enable/Disable Airplane mode the signal goes back to 4G and after 5 min (estimate) it drops back down. I then tried a stock JB (through odin) and this one states 4G available but the browser just hangs and doesn't load. I was able to send and receive calls for one attempt, the next just hangs when sending, and receiving goes right to voice mail.
I'm to the point where I'm thinking something got fried with the radio and need to buy a replacement phone. Just figure I should post something here and get a solution that may save me a few hundred bucks.
If anyone has any advice on this I would greatly appreciate it.
Thank you,
-Mike
Click to expand...
Click to collapse
There is likely to be something wrong with the phone itself. You did everything you can possibly do to fix it yourself.

So since yesterday I went back to CM 10.2 ROM and I'm able to send and receive calls but then, it may be spotty.
Artimis said:
Did you charge to full while the phone was off using a non-oem charger? If I were you, I would try calling VZW and see if they will offer you a CLNR assuming the phone is still in good condition. I'm willing to bet there is nothing you are able to do to fix the issue at this point ---- you could try taking out the screws on the back and checking for a loose antenna connection but it sounds more like electrical damage based on your information.
Click to expand...
Click to collapse
OEM USB cable when I'm at my computer plugged into a USB Hub (one port for charging) and at night I have it plugged into a dock (forget what brand, got it free when my bro ordered one for his HTC ONE and they shipped one for an S4)
jmxc23 said:
There is likely to be something wrong with the phone itself. You did everything you can possibly do to fix it yourself.
Click to expand...
Click to collapse
This is what I figured, just hoping it could have been software related.
Found a used Galaxy Nexus cheap so I ordered one of those... should tie me over till I'm ready to get a better phone next year (or later).
Thanks for the help.

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!