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[Q] Frustrating rom problem HELP!!!

Almost every rom I flash ends up having the same problem: I randomly lose signal. Not the crossed out icon, but rather just no bars. This happens while sitting still and there does not seem to be any pattern to it. Some roms it would happen overnight, others it happens during the day. Some roms I can toggle airplane mode on and off to fix it, while others I need to reboot. I always end up back on stock roms because the issue renders all custom roms unusable. Does anyone know what I can do?
silvertag said:
Have you tried going stock and see if the issue arise?
Did you try to go 2G only and see if your signal holds?
It could be a bad 3G signal and your phone is dropping in/out to boost your signal. you could be between two towers and your phone jumps from one to another because of low signal. Could be a bad antenna if the problem persist under stock and 2G only. There are alot of things that can cause this issue and the phone itself can be the source. You have to factor out every possibility to narrow it down.
Click to expand...
Click to collapse
I'm switching to 2g only and we'll see if it holds. I'll know in a few hours.
I would be surprised if it has to do with towers, it isn't something that happens exclusively in low signal areas.
At work I have full HSUPA+ signal and it still happens, at home I barely get 3g signal and it happens there.
It happens at my girlfriend's house too and there is moderate to high HSUPA+ signal.
The problem DOES NOT persist with stock roms.
DOES NOT lose signal when data is disabled
******************UPDATE***************
even when locked to 2g only, it still loses signal.

Seems to be a hardware issue. I had the same problem on my last phone (a LG-VU) and I red-necked it and stuck a small piece of wire in the phone's antenna. It worked surprisingly and I had no problems with it for the remainer of my contract. But before going to those extremes, I would flash back to stock gingerbread, and try several different ROMs and Modems.
Sent from my I897

McSpammer5 said:
Seems to be a hardware issue... But before going to those extremes, I would flash back to stock gingerbread, and try several different ROMs and Modems.
Click to expand...
Click to collapse
scrubinator said:
I always end up back on stock roms because the issue renders all custom roms unusable...
The problem DOES NOT persist with stock roms.
Click to expand...
Click to collapse
..............

HAve you tried falshing different modems???????

You might have a bad sim card. My phone was doing that last summer, and then one day I couldn't get a signal at all. Rebooting would fix it but only momentarily. I hit up an AT&T store on my lunch the next day and got my sim card swapped and lo and behold, no more problems. LOL I remember I was trying to hide my Cognition boot screen from the tech as my phone was still under warrenty at the time.

Issues with this phone?

I've read reports on the Internet of many users having issues with the Samsung Galaxy S3 such as small cracks appearing in the casing of the phone out of no where. Another thing is the weak signal strength this phone is known for. All the reports I could find were outdated and I really want to like this phone and purchase it.
I'd like to know if anyone knows if these problems have been fixed by Samsung.
Thanks in advance!

Touchpadnoob said:
I've read reports on the Internet of many users having issues with the Samsung Galaxy S3 such as small cracks appearing in the casing of the phone out of no where. Another thing is the weak signal strength this phone is known for. All the reports I could find were outdated and I really want to like this phone and purchase it.
I'd like to know if anyone knows if these problems have been fixed by Samsung.
Thanks in advance!
Click to expand...
Click to collapse
easily the best phone ive ever owned.
no problems yet

Touchpadnoob said:
I've read reports on the Internet of many users having issues with the Samsung Galaxy S3 such as small cracks appearing in the casing of the phone out of no where. Another thing is the weak signal strength this phone is known for. All the reports I could find were outdated and I really want to like this phone and purchase it.
I'd like to know if anyone knows if these problems have been fixed by Samsung.
Thanks in advance!
Click to expand...
Click to collapse
Signal has been top notch on mine.....Just as good as my wife's Rezound. Much much better then my GNEX!

Below 40% battery the signal becomes progressively weaker, noticably so, but no issues with calls, mostly manifests itself in data.
Otherwise, though, great signal. As I sit here in the middle of a state park far from anything. I travel a lot, neighborhood of a thousand interstate miles a week, and haven't dropped a call yet.
Device rocks, and haven't noticed any physical deterioration. As a smartphone you can't do any better on the market today in terms of quality, performance or features.
Worth getting the 32 gig model and slapping a 64 gig card in it. Nothing like having nearly 100 gigs of immediately available interactive storage.
4g lte is impressively fast.

one thing to remember is somebody will always have something to gripe about no matter what. that being said the s3 is by far the most solid device i have ever owned!

I've had two different Galaxy S3's on Verizon, and both have horrible data issues. Disconnects from data, and not gaining data back until reboot, slow data speeds when I have it, and signal bars constantly going from 1 to 2 to 3 to 4 to 3 to 2 to 3 to 4 etc....
The second phone has never been rooted or modified, and the first one I tried everything I could think of. So many ROMs, modems, and flashes, and nothing worked. Other Verizon phones nearby work just fine. Just my experience though.

Thread is called issues with this phone
Let's keep other phones out of it
Thanks
Thread cleaned
FNM

kennyglass123 said:
Thread is called issues with this phone
Let's keep other phones out of it
Thanks
Thread cleaned
FNM
Click to expand...
Click to collapse
If you are referring to me then I was talking about the Galaxy S3. The OP was talking about the Galaxy S3 too.
Sent from my iPhone using Tapatalk

I only got 2 bars where I am at, but looking at my family's other phones, they are about the same in reception (razr droid) . Now my dad who lives out of state, is telling me that when he calls me, it goes straight to voice mail (i dont see any indication that he called) , so this is an issue im trying to figure out, but I have a custom rom and kernal. So hard to say what the issue is for me ( I also got a crack on the screen already from slippage the 2nd day I owned the phone, but its very minimal), happened because I didn't have a case at the time.
https://sphotos-a.xx.fbcdn.net/hphotos-snc7/s720x720/386262_10151093476528557_832449593_n.jpg
The phone otherwise is awesome, Get some good protection for it, it is a must! I carry it in my pocket,but I do feel like if someone bumps up against my thigh that it could break.

I think people are to caught up in the bars. I never look at the bars. If my phone has 4G and I don't drop calls then there is no problems with the radio. I even get 4G in fringe areas where my GNEX did not.
Also, my wife's rezound can say she has 3 bars is a fringe areas but it still takes 10 minutes to
load a webpage.
Bars are a bunch of BS. Usage is what really counts.

Signal strength is what matters. I'm actually considering I might have a bad phone since it constantly loses data or drops to 1x in my apt, where the map shows full 4G coverage and my previous phone (Sprint) never had a single issue. Tested a friends Nexus and it had slow speeds but never lost a connection, and the Nexus is said to have really poor reception.

ECrispy said:
Signal strength is what matters. I'm actually considering I might have a bad phone since it constantly loses data or drops to 1x in my apt, where the map shows full 4G coverage and my previous phone (Sprint) never had a single issue. Tested a friends Nexus and it had slow speeds but never lost a connection, and the Nexus is said to have really poor reception.
Click to expand...
Click to collapse
First question are you rooted? if not you should get an update from Verizon with a new modem. If so go to the modem link and down the newest modem and flash it via Odin. I flashed mine and it seems to help with the single problem I was having. Also when you look at the bars I was told that if your data is on the bars you see is for your data when it is off the bars you see is for your voice.

silver1882 said:
First question are you rooted? if not you should get an update from Verizon with a new modem. If so go to the modem link and down the newest modem and flash it via Odin. I flashed mine and it seems to help with the single problem I was having. Also when you look at the bars I was told that if your data is on the bars you see is for your data when it is off the bars you see is for your voice.
Click to expand...
Click to collapse
I am a bit confused by this advice going around. I am rooted, and unlocked. I checked for root access a few times before posting this, and I can still do everything I could before. I have manually received the OTA update, and don't notice a difference in my root capabilities. Are you saying something was supposed to break once I updated?

[Q] Broken modem after root/ROM?

At least that's what I think it was... I rooted, unlocked BL, and flashed a couple custom ROMs and radios on my VZW GS3. I tried JellyWiz, AOKP, ParanoidAndroid. I can't be sure exactly when, but at some point, I lost the ability to get a good signal.
I work in a basement where only Verizon gets service. I used to get 5 bars all the time here and was able to get 1X network coverage and stable WiFi. After rooting, ROMing, whatever, I couldn't get any signal at work (the big circle-slash symbol), was dropping WiFi like crazy, and at my house which is a good 4G area, I could barely get 3G and making a call was a hopeless endeavor. I would constantly drop calls, and the ones I didn't drop were so choppy that the person on the other end of the phone was completely unintelligible.
It should be noted that with each new ROM I flashed was a clean flash. I Odin'd back to stock everything to try to remedy the issue. Bootloader got relocked, baseband reset to stock, everything. I put this phone back to exactly how it was out of the box. The problem persisted.
I finally got a replacement phone and the problem is gone. Besides the fact that my VZW-using colleagues had signal the whole time, this new phone also gets signal.
Now I'm hesitant to tinker with this thing because I'd rather be on stock TW than have a phone that is non-functional at the two places I frequent most - work and home.
Does anyone have an idea what happened here???

When to upgrade modem or look somewhere else?

I'm on CM10 (stable release from 11/1312) on a Sprint GS3. I have terrible 3g coverage all the time, in place I had coverage previously. Sometimes rebooting the phone works, sometimes it doesn't. My GF has a factory Sprint GS3 and has excellent reception in the same location, in the passenger seat of my car.
Do I need to upgrade the modem or something else.

SirHustlerEsq said:
I'm on CM10 (stable release from 11/1312) on a Sprint GS3. I have terrible 3g coverage all the time, in place I had coverage previously. Sometimes rebooting the phone works, sometimes it doesn't. My GF has a factory Sprint GS3 and has excellent reception in the same location, in the passenger seat of my car.
Do I need to upgrade the modem or something else.
Click to expand...
Click to collapse
I had to reboot the phone on more than one occasion yesterday to get 3G service while sitting in bars.
I'm on L710VPLG8

SirHustlerEsq said:
I had to reboot the phone on more than one occasion yesterday to get 3G service while sitting in bars.
I'm on L710VPLG8
Click to expand...
Click to collapse
It seems to be getting worse, no matter which modem I'm on. I reboot the phone, get 3g and 4g for about 5 minutes, then nothing and must reboot again. If I stream audio through the phone, it stays connected for hours. I've switched ROMS, started fresh, cleaned Dalvik and cache, the problem persists.
Dear god, please help me.

[Q] 3G not connecting after screen change

After flashing CM12 on my nexus 5 (D821). I flashed the 20 jan Nightly and everything was working fine untill i update to the 22nd jan nightly when my 3g simply stopped connecting or had very spotty signal, i didn't give it much thought at first thinking it was a nightly problem but after one week i reflashed stock lollipop, locked the bootloader, even tried kit-kat and the problem is still there. Before flashing cm 12 2g/3g/lte switching was working perfectly for about one year.
So utill now: i flashed different stock rom's, different kernels, radios, custom roms and nothing worked. When i tried switching the sim with another one from the same network, 3g worked on the other phone so i doubt that the sim is defective, but on my nexus i had the same connectivity issues. I also played with the *#*#4636#*#* menu and managed to get 4G working again but only in CDMA mode and I cannot receive any calls or texts, but the internet connection is working, 3G also connected at some point but the signal was very poor.
I am lost now, and also desperate because edge is too slow for anything. What confuses me though is that this seems to be a software issue since the cause was me flashing a different ROM but all the signs point to a hardware issue.
Can anyone plese give me a second opinion? Is there any fix for this? (Also i recently went to my network's service to replace my screen assembly, could also this be an issue? the issue appeared about 2 days after getting it back from them, also about the same time i flashed cm12)
Thank you for your time.

Also another thing i just noticed:
I opened my phone's back cover and the writing on the frame covering the motherboard says D820 and in the bootloader my phone shows as D821. Is this common for every D821 model?
I started to wonder if i got all my components back from the phone service... Although it's highly unlikely that they mingled with the motherboard since everything that i had on my phone was still there (custom ROM and all my personal info) maybe they switched the antennas...

Is the antenna connected?

Im going with disconnected antenna as well.