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"No Sim Card" error... Do I need a replacement?

So I've been experiencing intermintent connectivity, "no sim card error" and extremely slow speeds. This is my second gs3 ("Updated" sticker), and I have not rooted or flashed the device.
What options do I have? Should I get replaced again?

Kreeker said:
So I've been experiencing intermintent connectivity, "no sim card error" and extremely slow speeds. This is my second gs3 ("Updated" sticker), and I have not rooted or flashed the device.
What options do I have? Should I get replaced again?
Click to expand...
Click to collapse
I get the same error. I called Verizon to report the problem and they replaced my SIM only for the error to reappear hours later. I would try replacing your SIM, wiping your device, and calling Verizon to report the problem. I've google'd this issue and it seems like a fairly decent amount of people are experiencing this problem. It may have something to do with the area in which you're experiencing this problem, but that is only a guess.

Kreeker said:
So I've been experiencing intermintent connectivity, "no sim card error" and extremely slow speeds. This is my second gs3 ("Updated" sticker), and I have not rooted or flashed the device.
What options do I have? Should I get replaced again?
Click to expand...
Click to collapse
I got this once. I restarted the phone and it went away and hasn't come back yet. Worth a shot at least.

I've had this same problem. Replaced both phone and sim card and nothing helps. I believe whatever is causing this is the same thing causing the notification asking to unlock the sim card on some aosp roms. It seems to only happen in certain locations which leads me to believe that it has something to do with the phone communicating with certain towers or trying to connect in certain specific situations. Unfortunately both verizon and samsung are ignoring the issue and I don't believe it is quite common enough for any developers here to try to fix it. So, I would suggest switching phones if it's not something you think you can live with.

this happened to me last night, I went to a concert in a rural area, the phone was working great until I got to the parking lot, then I had no sms/voice, 4G worked great though.
I am assuming we will never receive a fix for this?
I also had "no sim" errors a few times while using CM10, but nothing like last night, my phone was useless the entire time I was there.
Then as I drove away it magically started working again.

Curios: Intermittent “Not registered on network" - anything other than bad SIM?

I’m rooted using qkster’s Heimdal 2.3.6 for almost a year... very few problems.
Lately I have a problem that occurs intermittently upon reboot.
1 – It shows a grey SIM card icon near upper right (not the blue sd scanning that always happens)
2 – Cannot make or receive calls, get message “not registered on network”.
3 - Can't use SMS or data
The only way to fix it is to reboot. Some reboots are successful, some not.
If successful, works fine until next reboot.
If not successful, doesn't work at all until next reboot.
The behavior only changes during reboot.. I guess maybe that’s when SIM card info gets red into memory?
I tried removing/reinstalling SIM card. Pressing on it during boot (other phones apparenlty have looseness of SIM card)..no change.
When the problem was really bad (9 out of 10 reboots come up bad), I swapped SIM cards with my daughter. **The problem followed the SIM card*.... Two successful reboots on my phone with her SIM card, Two unsuccessful reboots on her phone with my SIM card. Swapped my SIM card back into my phone and again unsuccessful reboots 9 times out of 10.
I called AT&T, they said go to their store and they’ll give me a new SIM card for free (which I’m planning on Friday)
To me, “intermittent” SIM card is a satisfying answer. It doesn't seem that software problem would create intermittent behavior like this. I haven’t really tried flashing new modem or playing wiht IMEI recovery stuff. ... I’m not tremendously familiar with those and don’t want to mess anything up when I have a success path to just swap SIM cards.
At this point I'm just curious and hoping to go into AT&T armed with more info.
Do you think is't a bad SIM card? Or is it instead maybe something simpler that could have been fixed without swappig SIM card?
And did my rooting the phone or other activities contribute to it?

electricpete1 said:
I’m rooted using qkster’s Heimdal 2.3.6 for almost a year... very few problems.
Lately I have a problem that occurs intermittently upon reboot.
1 – It shows a grey SIM card icon near upper right (not the blue sd scanning that always happens)
2 – Cannot make or receive calls, get message “not registered on network”.
3 - Can't use SMS or data
The only way to fix it is to reboot. Some reboots are successful, some not.
If successful, works fine until next reboot.
If not successful, doesn't work at all until next reboot.
The behavior only changes during reboot.. I guess maybe that’s when SIM card info gets red into memory?
I tried removing/reinstalling SIM card. Pressing on it during boot (other phones apparenlty have looseness of SIM card, not change.
When the problem was really bad (9 out of 10 reboots come up bad), I swapped SIM cards with my daughter. **The problem followed the SIM card*.... Two successful reboots on my phone with her SIM card, Two unsuccessful reboots on her phone with my SIM card. Swapped my SIM card back into my phone and again unsuccessful reboots 9 times out of 10.
I called AT&T, they said go to their store and they’ll give me a new SIM card for free (which I’m planning on Friday)
To me, “intermittent” SIM card is a satisfying answer. It doesn't seem that software problem would create intermittent behavior like this. I haven’t really tried flashing new modem or playing wiht IMEI recovery stuff. ... I’m not tremendously familiar with those and don’t want to mess anything up when I have a success path to just swap SIM cards.
At this point I'm just curious and hoping to go into AT&T armed with more info.
Do you think is't a bad SIM card? Or is it instead maybe something simpler that could have been fixed without swappig SIM card?
And did my rooting the phone or other activities contribute to it?
Click to expand...
Click to collapse
you can try flashing a cwm-modem and then retry
you can try flashing one of zen's new kernel and retry
a factory reset and odin or heimdall back to stock and check for problems
sometimes it's the software corruption that reports the sim as invalid

qkster said:
sometimes it's the software corruption that reports the sim as invalid
Click to expand...
Click to collapse
Thanks qkster.
I'm thinking it must be the SIM because the problem followed the SIM to another phone and back.
I'm just not sure exactly what exactly is stored on the SIM and whether it could have been corrupted by my phone's actitivies and whether it's fixiable without SIM resplacement.
Again, just curiosity.

electricpete1 said:
Thanks qkster.
I'm thinking it must be the SIM because the problem followed the SIM to another phone and back.
I'm just not sure exactly what exactly is stored on the SIM and whether it could have been corrupted by my phone's actitivies and whether it's fixiable without SIM resplacement.
Again, just curiosity.
Click to expand...
Click to collapse
Np..sry I didn't notice that you had use the same sim and got the same problems on a different phone.

resolved
UPDATE - I went to AT&T today – new SIM card, phone works fine on three-in-a-row reboots. That seems to confirm bad SIM was the problem, although I don’t know why... seems like an uncomon problem for Infuse.
I asked the rep what might be the cause, he said it just happens every once in awhile.
It took me awhile to figure out.
Googling the error “not registered on network” gave nothing on Infuse forums (apparently it’s not a common failure... I’m just lucky).
Google search on that error led to lots of other devices including lots of HTC phones that had problems with the holder that could be corrected by inserting paper or tape as a wedge to put pressure on the SIM card. I actually seemed to have success with that once (because the problem was intermittent), so that kept me on that wrong track longer than I should have been.
Anyway, it’s here now for posterity for whatever future Infuser searches “not registered on network” and pretty straightforward in retrosepct. The key test to confirm of course is swapping SIM to another phone.

Verizon Galaxy S3: worked fine for a week on 4.3, then 'no network'

I installed custom 4.3 ROM from http://forum.xda-developers.com/showthread.php?t=2591895&highlight=no+data and all was working really great for a week. Then today for some reason I got no network - can't call, no mobile data.
On local wifi everything works well. Reboots, power downs did not help.
Has anyone experienced anything like this? Any tips are greatly appreciated!

lowcloud said:
I installed custom 4.3 ROM from http://forum.xda-developers.com/showthread.php?t=2591895&highlight=no+data and all was working really great for a week. Then today for some reason I got no network - can't call, no mobile data.
On local wifi everything works well. Reboots, power downs did not help.
Has anyone experienced anything like this? Any tips are greatly appreciated!
Click to expand...
Click to collapse
In data usage settings, see if your option is set to LTE/CDMA.

dragon1357 said:
In data usage settings, see if your option is set to LTE/CDMA.
Click to expand...
Click to collapse
I feel like a total idiot - I opened the back and noticed that my sim card got ejected. For some reason I ignored the 'Insert SIM card' message because I took out the MicroSD card the day before and somehow my brain thought the phone was complaining about SDCard. SIM must have been ejected accidentally when I took out battery...
Thank you for guiding me to the correct path!

lowcloud said:
I feel like a total idiot - I opened the back and noticed that my sim card got ejected. For some reason I ignored the 'Insert SIM card' message because I took out the MicroSD card the day before and somehow my brain thought the phone was complaining about SDCard. SIM must have been ejected accidentally when I took out battery...
Thank you for guiding me to the correct path!
Click to expand...
Click to collapse
When I saw your original post I thought I'd finally been able to figure out why my GS3 says "no network" at times. It took me a whole hour to get it to connect to my network this morning! I gave the phone a reboot and took out the sim card a few times. Before upgrading my software I never experienced this problem. Please let me know if this problem persists on your end.

3G not working on Nexus 5

I've been using my 3G mobile connection for quite a while now.
Well, WAS using, someday, it suddenly stopped working. I thought it was because I exceeded my 250mb limit but, unfortunately, it wasn't that.
It usually showed up 'H' and had a fairly nice download speed, but now it only shows E and has a tremendously bad download speed.
So, after figuring out it wasn't my plan having its limit exceeded, I decided to try somethings to fix it. At the time I was using the most recent CM11 nightly.
I did a wipe and installed the latest snapshot. Didn't work.
I tried configuring the APN, exactly like my parent's Moto G, and had no luck.
And then now, as a last resort, did a COMPLETE wipe(including internal storage), and flashed the latest Android L ROM available.
Nothing worked, at all, actually.
I've also tried inserting my SIM card to my mother's Lumia 720. It worked as it should. Showed up 'H'. Her functioning SIM card also didn't work on my cellphone.
I'm getting desperate.
I live in Brazil, and my mobile operator is "Oi"

call your operator. you are getting edge, "E". thats very slow data speeds! also, look in tbe main settings, mobile networks. what is it set for.. lte, 3G, or 2G?

simms22 said:
call your operator. you are getting edge, "E". thats very slow data speeds! also, look in tbe main settings, mobile networks. what is it set for.. lte, 3G, or 2G?
Click to expand...
Click to collapse
As I said, the SIM card works properly on another cellphone, and other SIM cards don't work on mine. The network is set for 4G.
The problem is on the cellphone, that's for sure. I ran out of ideas so I decided to post here.

otaviomad said:
As I said, the SIM card works properly on another cellphone, and other SIM cards don't work on mine. The network is set for 4G.
The problem is on the cellphone, that's for sure. I ran out of ideas so I decided to post here.
Click to expand...
Click to collapse
try this.. dial *#*#4636#*#*, then press phone info, then change the lte/gsm to wcdma preferred. this will prefer 3G(not lte). btw, have you tried calling your operator? it can just be how they have you set up in their system now.

simms22 said:
try this.. dial *#*#4636#*#*, then press phone info, then change the lte/gsm to wcdma preferred. this will prefer 3G(not lte). btw, have you tried calling your operator? it can just be how they have you set up in their system now.
Click to expand...
Click to collapse
I did call my operator, but they told me to try the SIM card on another phone to see if it works and it worked. They didn't have anything to do.
Also, I've tried configuring that, still shows E. If I choose "Only WCDMA", my network goes unavailable.

otaviomad said:
I did call my operator, but they told me to try the SIM card on another phone to see if it works and it worked. They didn't have anything to do.
Click to expand...
Click to collapse
did you try the *#*#4636#*#*?
if its fine with the other sim card, then its not your phone. you might need a new sim card.

simms22 said:
did you try the *#*#4636#*#*?
if its fine with the other sim card, then its not your phone. you might need a new sim card.
Click to expand...
Click to collapse
I tried the SIM card on ANOTHER phone, the one I'm using on my phone, on another one. It worked.

otaviomad said:
I tried the SIM card on ANOTHER phone, the one I'm using on my phone, on another one. It worked.
Click to expand...
Click to collapse
dont know what to tell you, honestly. you tried another sim card in your phone, and it works. you tried your sim card in another phone, and it works. but your sim card doesnt work properly in your phone.. it should be working in your phone as well then, unless you do not have a 3G signal around you. personally, id just ask them for a new sim card, just in case.

simms22 said:
dont know what to tell you, honestly. you tried another sim card in your phone, and it works. you tried your sim card in another phone, and it works. but your sim card doesnt work properly in your phone.. it should be working in your phone as well then, unless you do not have a 3G signal around you. personally, id just ask them for a new sim card, just in case.
Click to expand...
Click to collapse
No no, I tried another SIM card on my phone and it didn't work. It's all about the phone, not the sim card.

otaviomad said:
No no, I tried another SIM card on my phone and it didn't work. It's all about the phone, not the sim card.
Click to expand...
Click to collapse
oh, ok. the sim reader could have broken(somehow). thats actually a fairly common issue. can you get an exchange? where did you buy yours?

simms22 said:
oh, ok. the sim reader could have broken(somehow). thats actually a fairly common issue. can you get an exchange? where did you buy yours?
Click to expand...
Click to collapse
I bought it from the internet. I don't think I can get an exchange.

UPDATE:
I've figured out the problem. It's the signal. When the H signal isn't strong enough, it goes to E. I was on another place on my city today and there H was working, and exactly when I got back, the signal started being EDGE.
Now, I've tried flashing another radio. I just downloaded the ZIP and flashed. Note that I am on Android L. It still has the same problem. Now I ask, how may I fix this?

Weird network problem - signal drops

Hi everyone,
has any of you ever had network problems, as can be seen in the video?
For a few days now both network connections have been breaking down when I try to make a call. But that doesn't always happen. Sometimes I can make 10 calls in a row and everything is fine, and sometimes nothing works. It doesn't matter which SIM I use to make the call. The problem occurs with both cards. If that happens, then either directly when dialing a number, or immediately after hanging up.
I've never seen anything like this. And I wonder if it's the software, the SIM tray, one of the cards or the network operator itself.
Can anybody please help me? This is quite annoying.
PS: Sorry for the German settings. „Keine SIM-Karte“ = No SIM card // „Dienst nicht verfügbar“ = no service

Clear sim tool kit data
Network reset
Clear system cache
Make sure the access point names are correct

blackhawk said:
Clear sim tool kit data
Network reset
Clear system cache
Make sure the access point names are correct
Click to expand...
Click to collapse
Thanks for the advice, but this didn't help.
I did these 4 steps, but the first time I tried to call, both connections dropped again. Can there be a hardware problem at all? Looks more like a software issue, doesn't it?

mathias.ngr said:
Thanks for the advice, but this didn't help.
I did these 4 steps, but the first time I tried to call, both connections dropped again. Can there be a hardware problem at all? Looks more like a software issue, doesn't it?
Click to expand...
Click to collapse
The sim card, the usual hardware suspect...
They can be damaged by ESD; handled like a stick of ram.
ESD may not manifest itself for weeks, months even years. Insults are cumulative.
It's not expensive but it is a pain, try to not damage it as it left the plant A-OK.
Just like ram sticks poor handling is the cause of almost all sim card failures.

blackhawk said:
The sim card, the usual hardware suspect...
They can be damaged by ESD; handled like a stick of ram.
ESD may not manifest itself for weeks, months even years. Insults are cumulative.
It's not expensive but it is a pain, try to not damage it as it left the plant A-OK.
Just like ram sticks poor handling is the cause of almost all sim card failures.
Click to expand...
Click to collapse
So, am I getting you right? I just go to the store and have the SIM card replaced and everything should work again?
I've tried a few things now. If I set SIM 2 to GSM, everything is fine. The connection doesn't break. I believe it is the 3G connection. And that's why these crashes could occur when I make calls. SIM 2 doesn't support VoLTE, so it switches to 3G.
EDIT: I've tried different things now. I swapped SIM 1 and 2 back and forth. I also used my two SIM cards alternately with a third SIM card. The problem persists. Could a hard reset help or should I send the device for repairs straight away?

Same problem here. Setting sim 1 to GSM only, and sim2 to LTE fixed my problem for a while. This has something to do with dual sim handling.

jerrydrake said:
Same problem here. Setting sim 1 to GSM only, and sim2 to LTE fixed my problem for a while. This has something to do with dual sim handling.
Click to expand...
Click to collapse
This is soooo anoying. Have you had this problem for a long time or did it only come recently? Could this have something to do with a recent update?

I bought the phone a month ago, and while I was setting it up it received 5 updates including android 11. So I have no experience prior to Android 11.

jerrydrake said:
I bought the phone a month ago, and while I was setting it up it received 5 updates including android 11. So I have no experience prior to Android 11.
Click to expand...
Click to collapse
Damn, same here.

Have you tried cleaning the sim cards with rubbing alcohol?
Then put them back without touching the metal contacts.

Didgesteve said:
Have you tried cleaning the sim cards with rubbing alcohol?
Then put them back without touching the metal contacts.
Click to expand...
Click to collapse
No, I don't see any point in doing that. I swapped the SIM cards and even tried other cards and the problem was still there. If something had to be cleaned, it would be the SIM tray. But as already written, there are no disconnections when a SIM is operated in 2G. I think that rather means that it is a software problem.

jerrydrake said:
I bought the phone a month ago, and while I was setting it up it received 5 updates including android 11. So I have no experience prior to Android 11.
Click to expand...
Click to collapse
I have this same problem with phone dropping off the network. For me it started after the first Android 11 update. I have full signal levels at home but if I try to make a call signal level for both sim cards drops and I get a message that mobile network is not available. Doesn't happen always but pretty often.
I'm pretty sure it has something to do with how the phone handles dual-sim operations...

Juu_5o said:
I have this same problem with phone dropping off the network. For me it started after the first Android 11 update. I have full signal levels at home but if I try to make a call signal level for both sim cards drops and I get a message that mobile network is not available. Doesn't happen always but pretty often.
I'm pretty sure it has something to do with how the phone handles dual-sim operations...
Click to expand...
Click to collapse
I am glad, I am not the only one, who is facing this problem. I already thought, I have to send my phone back. So, we have to wait for a fix.

Must be patient. There is also bluetooth problem(disconnecting from devices). It looks like they were too fast with android 11.

Since the last update(.159), i also have the drop out problem. Starting to feel sorry for buying it...

So, let's hope the new .222 update, which has just arrived, will fix this.
EDIT: no, it doesn't.

mathias.ngr said:
So, let's hope the new .222 update, which has just arrived, will fix this.
EDIT: no, it doesn't.
Click to expand...
Click to collapse
Yeah, I even had to restart after the update, in order for the second SIM to become active...
Edit - and the problem is even worse. Almost after every incoming call I lose signal to both sims...
Edit II - I wanted to try to switch sim 2 to gsm only network, and noticed that there's 5G available for it too, after the update. Before that there wasn't such an option....

bo6o said:
Yeah, I even had to restart after the update, in order for the second SIM to become active...
Edit - and the problem is even worse. Almost after every incoming call I lose signal to both sims...
Edit II - I wanted to try to switch sim 2 to gsm only network, and noticed that there's 5G available for it too, after the update. Before that there wasn't such an option....
Click to expand...
Click to collapse
Since I use the second SIM only for business calls, I have already set it to GSM only. Today I noticed that I still have outages. So apparently to force 2G is no longer of any use. :/
About 5G: It has been active on my device since I got it. Perhaps there was an update on this from your carrier.

bo6o said:
Since the last update(.159), i also have the drop out problem. Starting to feel sorry for buying it...
Click to expand...
Click to collapse
same here and the problem is very annoying cause my everyday job is in a car. is 100% software problem. 650€ for a phone you can't use it as a phone.

Hi, I don't have signal drop but yes the WiFi drip in my room, I had a xz premium and never happened on it