I had this problem running miui, cm7, and now I'm on unnammed. I've used all the modems and still nothing helps. I thought unnammed didn't have this problem? To fix it I haft to flip to airplane mode and back, then its fixed.
Sorry if this has been asked. I'm on taptalk on my phone and I don't know how to search with it
Sent from my SAMSUNG-SGH-I777 using Tapatalk
Could be APN settings. I don't know them off hand, but they are listed in post 2 of the miui thread.
If it happens on multiple ROMs it could also be a bad SIM card. Does it do it on pure stock? If so, try a new SIM card.
Sent from my Galaxy S II (i777)
ok, thanks. ill look them up. this issue is making me want to switch back to my iphone, but hopefully this will fix it cause i like android, just this is getting old
Are you talking about wifi or 3g?
Are you using any battery saving apps like Juice Defender?
ZeroIsntTheHero said:
Are you using any battery saving apps like Juice Defender?
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This. I haven't seen this issue reported often, and in the past, it's turned out to be an app interfering with the connection. If not, it's likely an apn issue.
randrewm97 said:
I had this problem running miui, cm7, and now I'm on unnammed. I've used all the modems and still nothing helps. I thought unnammed didn't have this problem? To fix it I haft to flip to airplane mode and back, then its fixed.
Sorry if this has been asked. I'm on taptalk on my phone and I don't know how to search with it
Sent from my SAMSUNG-SGH-I777 using Tapatalk
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I've had the same thing happen to me on other AOSP roms too. On both the SGS2 and my captivate.
I just switched to iscrewed to see if the prob is still there. Its hard to reproduce the bug, but it happens when i go from either:
1. being connected to wifi for a long time and then leaving that area, mobile data doesnt turn back on
2. being in a bad service area for a long time, and then leaving it, mobile data doesnt turn back on.
The worst thing about it is i use google voice for texts, and thats usually how i can tell that it cut out, because i stop getting texts from people.
I love android and google, but honestly if problems like this dont get ironed out, then as long as the next iphone has a decent size screen im probably switching over.
FYI this has occurred when i had the bare minimum installed on my phone, and i never use any ridiculous battery saving apps.
lourivellini said:
I've had the same thing happen to me on other AOSP roms too. On both the SGS2 and my captivate.
I just switched to iscrewed to see if the prob is still there. Its hard to reproduce the bug, but it happens when i go from either:
1. being connected to wifi for a long time and then leaving that area, mobile data doesnt turn back on
2. being in a bad service area for a long time, and then leaving it, mobile data doesnt turn back on.
The worst thing about it is i use google voice for texts, and thats usually how i can tell that it cut out, because i stop getting texts from people.
I love android and google, but honestly if problems like this dont get ironed out, then as long as the next iphone has a decent size screen im probably switching over.
FYI this has occurred when i had the bare minimum installed on my phone, and i never use any ridiculous battery saving apps.
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Have you tried a new SIM card? My problem was similar, and followed me from one phone to another as you describe. New SIM card fixed it right away.
Sent from my Galaxy S II (i777)
quarlow said:
Have you tried a new SIM card? My problem was similar, and followed me from one phone to another as you describe. New SIM card fixed it right away.
Sent from my Galaxy S II (i777)
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Wow, i didn't even consider that.
I will be trying and will report back. If this fixes it i will owe you my life!
I might have to switch back to cm7 just to name sure it's the Sim card that's causing it.
quarlow said:
Have you tried a new SIM card? My problem was similar, and followed me from one phone to another as you describe. New SIM card fixed it right away.
Sent from my Galaxy S II (i777)
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ill try this out tomorrow. just now when checking my email i had to turn on airplane mode and back off to get data to work.
also, i tried the apn settings on the first page of the miui thread and it didnt work. i tried those settings on miui, wiui, cm7, and unnammed but they all made it so that my internet didnt work at all.
so just to clarify, i shouldnt haft to change apn settings and my phone shouldnt be doing this on non stck roms, right? sim is likely the problem? this has gotten really old really quick and its embarrassing when im trying to show my friends something but my phone isnt working.
Your phone should work fine on any ROM you find here. Mine does. I never have to play with APNs, even on miui. I never have to play with airplane mode or power cycle. But, when my SIM was bad I would drop data connectivity all the time. Calls would fail (outbound only), and other glitchy reception issues. Sometimes airplane mode fixed it, sometimes power cycle, sometimes airplane mode on, power cycle, and all times it was temporary. Its worth a try, shouldn't cost anything to get a new SIM. If they give you trouble at the store just tell them you called 611 and they told you to go in for a new one. If that doesn't fix it go warranty route for a new phone.
Sent from my Galaxy S II (i777)
randrewm97 said:
also, i tried the apn settings on the first page of the miui thread and it didnt work. i tried those settings on miui, wiui, cm7, and unnammed but they all made it so that my internet didnt work at all.
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Click to collapse
Those APN settings have worked fine for me on both CM7 and every Sammy ROM I've used. I always have (unrelated) problems with MIUI, so I can't verify that one.
So i went today and got a new SIM. Its been about 9 hours, but no problems yet. Time will tell if it works, but im willing to bet that was the problem, and this is why.
When i went to get my sim, the guy there told me that when ATT started rolling out 4g phones (which includes 3.5g) many employees had trouble with their data switching on and off until they switched their sim cards.
Then i started thinking to myself - I've had the problem about as long as I had my SGS2, and only had the problem with AOSP roms on my captivate - then i made the connection.
When i used a stock, or stock based rom on my captivate, i had no problems. The second i used an international ROM, or an AOSP rom is when i would have the issues. What is the difference between the roms............. The ATT rom doesnt have hspa+ enabled, so using my old "3g" sim card i was fine. No 3.5g to connect to to cause problems. CM and international Roms would use that new 3.5g network and would then screw up.
That is my theory anyway, and if it turns out true it would have solved one of my biggest annoyances with android. (or at least my android experience)
fingers crossed
i too went in and got a new sim. my phone service actually quit working before going in. id get calls and i could hear them but they couldnt hear me. i replaced the sim and all is good. where miui would hang and data would freeze and id haft to redo the airplane mode trick, it would just hang for a sec or 2 and then start downloading again. ive only had it hang 2x now and i think its because it might be switching from hspa to 3g or even wifi.
so for the sim card thing worked. if it fails in the mean time, ill come back to this and give an update. thanks for suggesting it being the sim card cause i wouldnt have thought of that.
I'm another day strong without any problems. I don't know of its due to the new sim or because i switched to a Samsung based rom. I should switch back to test, but I'm loving the speed of icsrewed right now.
If i had to guess i would say it's due to the sim, and if so, there should be a sticky somewhere that says to make sure your not using an older 3g sim card. Would have saved me months of aggravation.
Will report back after a few more days. In a week or so I'll switch back to cm to see if it fixes it there as well.
That's one reason I generally buy my phones at the att store (authorized reseller, but dedicated to att phones). Usually they will price match, and they know things like that. My SIM went bad when I had my captivate. Later when I upgraded to a faux G phone the att rep knew I would need a new SIM, and replaced it then, even though it was only a month old. They also knew the "3G" data plan needed to be converted to a "4G" (still unlimited) plan on their system for me to get data.
You don't get that kind of assistance when you buy at Walmart, online, etc.
Sent from my Galaxy S II (i777)
quarlow said:
That's one reason I generally buy my phones at the att store. Usually they will price match, and they know things like that. My SIM went bad when I had my captivate. Later when I upgraded to a faux G phone the att rep knew I would need a new SIM, and replaced it then, even though it was only a month old. They also knew the "3G" data plan needed to be converted to a "4G" (still unlimited) plan on their system for me to get data.
You don't get that kind of assistance when you buy at Walmart, online, etc.
Sent from my Galaxy S II (i777)
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Amazon Mobile just sends you a new simcard anyways lol
Interesting, maybe next time if my data refuses to work I should bug at&t for a new Sim card. I had problems on different roms including stock rom where I had to turn off and on my data or else it will not work. But I think my modem might have played a role. Data seems fine now.
Sent from my SGH-I777 using XDA App
zynine said:
Interesting, maybe next time if my data refuses to work I should bug at&t for a new Sim card. I had problems on different roms including stock rom where I had to turn off and on my data or else it will not work. But I think my modem might have played a role. Data seems fine now.
Sent from my SGH-I777 using XDA App
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If you go directly to an AT&T store they replace it for free.
penguinlogik said:
If you go directly to an AT&T store they replace it for free.
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Yup just show up. They shouldn't charge. as long as your an att customer theyll take care of you. I've never heard of anyone paying for a new Sim. If you lose your Sim I've heard of them charging people, but i doubt they'll charge even then.
My DNA just has the Voice service after connecting to WiFi over night. The first thing I need to do after leaving home is flight mode on and off to get the phone back on the carrier's network data. It is annoying, Am I the only one here?
G-Nexus said:
My DNA just has the Voice service after connecting to WiFi over night. The first thing I need to do after leaving home is flight mode on and off to get the phone back on the carrier's network data. It is annoying, Am I the only one here?
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I get the same problem. I have also experienced "preparing sim card" messaged several times. I hope the OTA update helps, I have not had the chance to install it as I am currently studying abroad.
G-Nexus said:
My DNA just has the Voice service after connecting to WiFi over night. The first thing I need to do after leaving home is flight mode on and off to get the phone back on the carrier's network data. It is annoying, Am I the only one here?
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Its a common bug. My gf n I get it often
Sent from my HTC6435LVW using xda app-developers app
autolycus89 said:
I get the same problem. I have also experienced "preparing sim card" messaged several times. I hope the OTA update helps, I have not had the chance to install it as I am currently studying abroad.
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Have you tried in gsm only mode? I have same problem and preparing SIM card issue doesn't come up in 2g mode. I was reading this kind of issue is produced most likely by a faulty 3g antenna.
Sent from my HTC6435LVW using xda app-developers app
I experience this problem frequently too. Not sure if there really is a fix for it. Toggling between airplane mode works for some people, reseating the SIM card, gently erasing the back of the sim card, applying 2 layers of tape to the sim card tray to keep the card seated appropriately, exchanging for a new SIM, putting phone into airplane phone and removing sim than replacing sim card, remove sim card than boot into recovery and clear cache and dalvik, etc.. yes I've tried most of these but to no avail. The OTA update may have helped a little I am not sure. Most believe it is a hardware issue that really can't be permanently fixed. If anything else is found let us know. Such an annoying problem that totally ruins this amazing phone.
There's different issues being discussed here. It sounds like you're having the issue where you need to toggle airplane or network sometimes when switching between networks or from WiFi to mobile data.
It's not device specific, there's some decent articles on it and in the early days we thought it was a Verizon issue. But it's actually a Sprint problem too I learned on accident when I was trolling their forums.
When the network is activated, on a device with a SIM card on Verizons network, the preparing SIM notification is actually describing a process very similar to *228 back in the olden days before LTE that was done when first activating a device on the CDMA network. The LTE network is different in that everytime it connects to the network is does that SIM activation process.
I know on my networks here, there's a changeover in one place it happens about 50 percent of the time.
If that's what is happening to you and toggling airplane fixes it, I think it's an LTE/network symptom and not due to a faulty device.
However I have a device I'm about to warranty with a hardware failure I'm thinking. It gets data great but absolutely no voice ever, never had an incoming call or anything. Or made an outgoing call in the month I've had it. It doesn't bother me I didn't buy this thing to talk on, but I'm donating the device so I'm going to have it fixed.
Anyway, from all the OP has posted so far, I'm not feeling like it's a hardware or device issue, however as more info develops that opinion may evolve.
Sent from my HTC6435LVW using Tapatalk 2
U r the man Charlie. I am having an identical issue as op. And based on occurrences relevant to location it seems that this is only an issue when under 4g service-atleast for me-. Toggling airplane mode reactivates SIM as u said and restores full functionality. However, I have noticed the time needed to pass for said issue to reoccur is significantly shorter unless a full restart is preformed. If fastboot is enabled the issue persists. My question is this; if this is a network issue -which I'm sure it is at least in part- what software wise -if anything- could be going on a full restart fixes?
Sent from my HTC6435LVW using xda app-developers app
I'm a gsm user and I'm having the issue in a non 4g lte network. I have preparing SIM card every couple of minutes. If I toggle to gsm only mode everything is perfect, not even a single issue. Looking to the logcat, when the error comes up, it shows a message about ICCID number doesn't match stored one and then invalid radio technology. Is this software or hardware? I'm really confused. I've already tried everything from software side, kernels, radios, roms, RUU to stock.
Sent from my HTC6435LVW using xda app-developers app
Phone went through the wash. Took out battery, let dry for over 2 weeks. Rooted with factory Tmobile GB ROM. It's clean and everything works except for the backlight won't come on, and it resets the phone with sim(works fine in airplane mode)(sim works fine in another phone).
Since I tried the sim card, it took it out of airplane mode at boot, and the phone keeps resetting after it fully boots(5mins). Is there a way to make it default to airplane mode?
I've heard of people reflashing the rom after dropping the phone, or other software issues to get back the backlight? Any ideas?
You try a different SIM card? Maybe the SIM card contacts are corroded due to being washed
Ya, no go. So if I end up getting a new phone, what should I get? 12mp camera would be a nice upgrade. Sony Xperia Ion, T, or V?
Only problem with those is you have to buy an unlock code for $45 to use with another carrier.
Can't find a way to do it yourself. Any other suggestions?
DroidDonX said:
You try a different SIM card? Maybe the SIM card contacts are corroded due to being washed
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Talk to hasoon2000, he can get you and unlock code for a decent price
Sent from my epic amaze 4g
Hi all.
I've had my mi8 lite global for a few weeks now.
It's been great, seems to do all I need and more.
But, I've more recently been having an issue with it dropping my Sim card.
I can be using it or sitting standby and it'll suddenly flash to the lock screen and and show no Sim card found in the notification area.
Sometimes it can go a decent length of time with no issue (couple of days) while other times it'll repeatedly do it in one session.
Rebooting the phone brings it back to normal each time.
I've also tried putting my Sim in slot two and it doesn't read it all.
And another issue I have is my alarm failing, twice now.
No notification or anything. Just didn't go off.
Not sure if it's related or not.
Thanks!
I've sorted the alarm issue.
I allowed the clock to auto start.
But any tips or advice on how to sort and solve the SIM card issue?
Maybe it's the simcard itself try to test with another one
Don't have another SIM card. I can order one though.
It's also a new SIM card.
Where it's irregular, makes it difficult to prove where the issue is.
I can put my sim in an old phone but it's a faulty phone.
Does android save these kind of things to a log?
Moola404 said:
Don't have another SIM card. I can order one though.
It's also a new SIM card.
Where it's irregular, makes it difficult to prove where the issue is.
I can put my sim in an old phone but it's a faulty phone.
Does android save these kind of things to a log?
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Click to collapse
same thing happening here with the SIM card, any solutions or tips?
I have an Samsung S9 Plus that was an AT&T unit (I think) and I flashed it over to the global firmware so I could use it on Visible (Verizon). It has been working for months, but I have now had this problem happen twice. I get up on a Monday, and notice that my phone has no service. I think it says "No Network Connection" or something like that. The first time I tried many of the usual steps - switching airplane mode, resetting network, wiping the cache, long support chats with Visible. What finally got it working again was putting in another sim(from Red Pocket - AT&T). That made the phone go through a reboot to swap over to the new sim. Then I put the old Visible sim back in. The phone does another reboot, and now everything is working again.
Is there a way that I can get the phone to go through this process without swapping the sims? I would just like to know if there is a more efficient way of fixing this problem when it pops up.
Phone info
SM-G965UA
Android 10
brotherhaslip said:
I have an Samsung S9 Plus that was an AT&T unit (I think) and I flashed it over to the global firmware so I could use it on Visible (Verizon). It has been working for months, but I have now had this problem happen twice. I get up on a Monday, and notice that my phone has no service. I think it says "No Network Connection" or something like that. The first time I tried many of the usual steps - switching airplane mode, resetting network, wiping the cache, long support chats with Visible. What finally got it working again was putting in another sim(from Red Pocket - AT&T). That made the phone go through a reboot to swap over to the new sim. Then I put the old Visible sim back in. The phone does another reboot, and now everything is working again.
Is there a way that I can get the phone to go through this process without swapping the sims? I would just like to know if there is a more efficient way of fixing this problem when it pops up.
Phone info
SM-G965UA
Android 10
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Call your carrier and have them to a reprovision. I had this happen with T-mobile coming from Sprint.. They will have you turn off the phone, do something on their end, and after that it should work.
Just to update, I have switched over to ATT Prepaid. Since the change, I have not had the problem happen. I think it must have been an issue with Red Pocket. Either that or something that got fixed with an update. Just putting these data points out there for anyone else that is having issues like this.