Question why does my phone say no service after updating to android 12. I did't realize this was a beta update and now i can't use my phone. - Samsung Galaxy S21+

my phone say no service after updating to android 12. I did't realize this was a beta update and now i can't use my phone.I have restarted it like 6 times. its not on airplane mode. what I can I do?

Clear system cache.
Factory reset.
Flash back to known good version if boot loader version hasn't been upgraded too.
Firmware updates tend to break things; if the OS is fast, stable and fulfilling its mission... let it be.

try:
-cache clear
-check with your carrier that SIM is working fine (could be dead if you had it for a long time)
which carrier are you with?
can you share the device model number please?
I would try reporting error to Samsung using the Samsung Members app if it still doesn't work.. reproduce the issue once more then submit a ticket (connect to wifi so you have internet when submitting )
hope this helps.

Related

[Q] KitKat Update Issues

The OTA update showed up this morning. I chose to delay it because I was going to need my phone. Went to update it later and it just would not download. Did a factory reset and now when I go to system updates it says "checking for available update." for about a minute then says "check for update is not available at this time. Try again later." What am I missing here?
dwcosby said:
The OTA update showed up this morning. I chose to delay it because I was going to need my phone. Went to update it later and it just would not download. Did a factory reset and now when I go to system updates it says "checking for available update." for about a minute then says "check for update is not available at this time. Try again later." What am I missing here?
Click to expand...
Click to collapse
there have been quite a few people with this same issue. i havent seen any direct fix.
if you are locked, i would suggest you wait it out, or wait for the sbf file to get leaked. there is a way to sideload it, but its risky being locked and no sbf to save you if a problem comes up.
if you are unlocked, there are directions in the General forum to sideload the ota. there is no risk if you are unlocked.
if you are locked, the only thing i would suggest to try is re-flashing the stock 9.30.1 with rsd and see if it will pull the update afterwards. there is no guarantee this will work, but your phone will be 100% clean stock after the flash and give you the best chance to grab the ota if available.
dwcosby said:
The OTA update showed up this morning. I chose to delay it because I was going to need my phone. Went to update it later and it just would not download. Did a factory reset and now when I go to system updates it says "checking for available update." for about a minute then says "check for update is not available at this time. Try again later." What am I missing here?
Click to expand...
Click to collapse
Did you download it and then said to apply it later? If so, are you rooted? If so, hook up your phone to your PC and adb shell into it. Type "su" and hit enter to go into superuser mode.
Navigate to the /cache directory and you should see the OTA .zip file sitting in there. Copy it to your external SD card and then you can load it manually via the recovery.
If you're not rooted, then you won't be able to navigate into the /cache directory. Or, if you didn't have it download when you got the notice (or couldn't download it), then it won't be there.
More update issues
My wife & son both have the HD. My wife checked for the update this morning, said it was ready and proceeded to download. Update did as it was supposed to and when it was done, she had KitKat and that's when things went a bit wonky.
If she has Bluetooth turned on, WiFi connection drops after a few minutes. She googled possible workarounds and none really worked. As long as she is not using BT, WiFi stays up
Has anyone else seen this behavior? She refuses to let me root it and install a custom ROM as I have done on my Samsung GS4 from VZW.
In the mean time, we've told our son not to take the update until
we know more about a possible fix.
zeb carter said:
My wife & son both have the HD. My wife checked for the update this morning, said it was ready and proceeded to download. Update did as it was supposed to and when it was done, she had KitKat and that's when things went a bit wonky.
If she has Bluetooth turned on, WiFi connection drops after a few minutes. She googled possible workarounds and none really worked. As long as she is not using BT, WiFi stays up
Has anyone else seen this behavior? She refuses to let me root it and install a custom ROM as I have done on my Samsung GS4 from VZW.
In the mean time, we've told our son not to take the update until
we know more about a possible fix.
Click to expand...
Click to collapse
Fix was just posted recently. do a factory reset. It sucks, but its the only option.
Factory REst doesn't solve 4.4.2 WIFI issue on Razor MAxx HD
TXKSSnapper said:
Fix was just posted recently. do a factory reset. It sucks, but its the only option.
Click to expand...
Click to collapse
Android V 4.1.2 worked flawlessly since Nov 1023 upgrade. Decided to upgrade to KitKat via OTH. Had WIFI connection issues right away ( inability to obtain IP or lost connection, etc.) This happened with Bluetooth ON or OFF, no difference. The Signal strength was much lower than when on the previous android version and subsequent indicated connection speed was at least 1/2 of what I was getting previously.
Worked with Verizon and Motorola tech support personnel and did multiple factory resets with no improvement.
Since I wanted a factory solution and had insurance on the phone, I ordered a replacement phone. Thankfully, the new phone had 4.1.2 and worked perfectly. WIFI issues are gone.
Conclusion, KitKat is not ready for prime time yet. WIFI bug needs to be worked out before I will upgrade again.
egutwillig said:
Android V 4.1.2 worked flawlessly since Nov 1023 upgrade. Decided to upgrade to KitKat via OTH. Had WIFI connection issues right away ( inability to obtain IP or lost connection, etc.) This happened with Bluetooth ON or OFF, no difference. The Signal strength was much lower than when on the previous android version and subsequent indicated connection speed was at least 1/2 of what I was getting previously.
Worked with Verizon and Motorola tech support personnel and did multiple factory resets with no improvement.
Since I wanted a factory solution and had insurance on the phone, I ordered a replacement phone. Thankfully, the new phone had 4.1.2 and worked perfectly. WIFI issues are gone.
Conclusion, KitKat is not ready for prime time yet. WIFI bug needs to be worked out before I will upgrade again.
Click to expand...
Click to collapse
That's a shame because for me, the FDR fixed the Wifi/Blue-tooth issue as it did for many others. Might have been a hardware issue (faulty radio, etc).

[Q] Which unlock tool to unlock v4.1.1?

Hello I am still dealing with a weird problem that I posted on this forum over a year ago that was never resolved. Basically my tablet is stuck running Android version 4.1.1 (Build JRO03C.US_epad-10.4.4.25-20121228) because if I upgrade to any new versions (whether I do it as OTA or via micro USB) my wifi card stops functioning (it does not see any networks). Anyways I even went so far as to RMA it and Asus said they fixed it, shipped it back to me, but in reality all they did was roll me back to 4.1.1, saw the wifi was working and shipped it back to me saying they "fixed" it. Well of course the second I got it back I installed the OTA and wifi broke again... So I just rolled back to 4.1.1 and said screw it, I just won't update it anymore. Well this week I figured I'd try installing the latest OTA and hoped that this version would not kill my wifi, unfortunately the same exact issue has occurred and thus I have once again rolled back to v4.1.1 and my wifi works perfectly...
TLDR; Anyways apologize for the rant/story but basically I am stuck with using version 4.1.1 of Android and am considering flashing a custom rom to try and resolve some issues I am having with the stock rom's wifi, however the official bootloader unlock tools only say they work on version 4.0 (ICS) or version 4.2 (JB). I'm stuck on v4.1.1 so which tool should I use (or am I out of luck)? Thanks
v7 worked your JB version, but I think v8 will work as well. Just try them both - it's just an app. Either it works or not....
But that is the weirdest thing I've heard in a while (reg. WiFi).
What have you done on your router side? I cannot believe this is a problem with the tablet's wifi card.
Is this 'wifi not working' consistent on any router, any network?
Did you reset the router, change the channel?
Do you have possible interference: microwave, bluetooth speakers, bluetooth enabled or any other device that uses radio waves anywhere in the vicinity of the tablet?
berndblb said:
v7 worked your JB version, but I think v8 will work as well. Just try them both - it's just an app. Either it works or not....
But that is the weirdest thing I've heard in a while (reg. WiFi).
What have you done on your router side? I cannot believe this is a problem with the tablet's wifi card.
Is this 'wifi not working' consistent on any router, any network?
Did you reset the router, change the channel?
Do you have possible interference: microwave, bluetooth speakers, bluetooth enabled or any other device that uses radio waves anywhere in the vicinity of the tablet?
Click to expand...
Click to collapse
Thanks appreciate the reply - I just wasn't sure if using the wrong unlocker could brick my device... I'll give 8 a try first then 7 if necessary. The ironic part is that it requires a network connection to complete the unlock operation (I guess so Asus can cross your S/N forever off of their list of devices under warranty).
I agree that this is a strange problem as I have not seen anyone else report it. Basically I tried resolving this about 13 months ago with the help of this board and as mentioned I finally had to RMA it, but ASUS just rolled the version back instead of fixing anything and at that point I just wanted to enjoy using my tablet more than I wanted to fight with ASUS's customer service reps who effed up the first RMA job (the language barrier was also apparent in my interactions with them)...
Since over a year has gone by since the last time I tried an OTA, I hoped that the latest update would not have the same issues but alas, I'm not that fortunate.
As far as what I've tried - I have tried connecting to different networks and changing router channels and checking for interference, but the thing is, I'm quite certain the problem is with the tablet. When I first had the problem I lived in an apt building where I could 'see' 10+ wifi networks at any given time on all different channels with different routers/security settings etc. As soon as I applied the OTA the tablet could no longer 'see' any of them (even as I sat with my laptop/phone connected to wifi right next to it). I now live in a house (and have a different ISP, and a different router) and tablet works perfectly when on version 4.1.1. I don't have as many wifi networks visible from my house, but can still see a few of my neighbor's wifi networks both on the tablet (v4.1.1) and on other devices. But the second that I upgrade, all of them disappear from the tablet's view (but continue to be visible/work on other devices). I have turned wifi on/off, turned airplane mode on/off, tried connecting via wifi direct, rebooted, cold booted, booted into recovery, factory reset all data, etc. but nothing works because the tablet cannot see any wifi networks. And the second that I rollback to version 4.1.1 the wifi works perfectly... I have upgraded and rolled back probably at least 6 times and it is always the same result.
I do also get another weird side affect when I upgrade - the tablet refuses to turn off when I'm on any version higher than 4.1.1. So if I press "Shut Down", the tablet displays "shutting down" and the screen goes black and becomes non-responsive (as do the buttons, just as you would expect when turning off), but it does NOT actually shut down because if I come back 30 mins, an hour, 2 hours later I can feel it running very hot. The only way to truly shut it down is to let the battery drain...
So maybe a better question on my part would have been, do you think installing a custom ROM will even help resolve this issue? Or should I continue using 4.1.1 and not risk making the situation worse with custom ROMS?
WiFi problems are often kernel related..... Did you always take the update OTA?
Did you ever try to flash the latest firmware version manually? OTA updates do go wrong sometimes....
Although repeatedly???? It's weird. Maybe the server your tablet pulled the OTA from hosts a bad copy????
If you do not want to unlock, manually flashing the firmware would be one thing to try. OTA's patch the existing system, replace old files with new ones where necessary. Manually flashing the firmware replaces everything - a totally new installation of everything: bootloader, recovery, kernel, system and data.
But you cannot make it worse by flashing a custom rom. You unlock, flash a custom recovery (which does not change anything else on your system), then you make a nandroid (backup) of your current 4.1.1 system before you flash a rom. So you would always be able to go back to where you are now. On a custom rom you could even try out different kernels, which often are the root cause of wifi problems..
The thing is: If you want to flash a current custom rom like CROMi-X, based on Asus JB 4.2.2, or CROMBi-KK/CM11 which are KK roms, you always have to update your bootloader first. Your .25 bootloader is too old for any current rom.
You can easily do it once you have a custom recovery installed, but even easier would be to update to the latest Asus firmware 10.6.1.14.10 (after unlocking), then flash the custom recovery (TWRP 2.8.1.0), then flash a rom of your choosing.
Downside of this route would be you wouldn't have that 4.1.1 nandroid I mentioned earlier.....
Nahhh - thinking about it, I would recommend you go this route:
Unlock,
flash an older version of TWRP compatible with your current bootloader (TWRP 2.6.1.0 is ok)
make a nandroid of your current system
do a full wipe of cache, Dalvik and data in recovery
flash the 10.6.1.14.10 bootloader in recovery (I can talk you through it)
flash TWRP 2.8.1.0
flash a rom of your choice
Check out my guide, link in my signature, and let me know if you have questions
Thanks - I was able to successfully unlock my device with v7 of the unlock tool (v8 wouldn't even install). Thanks too for the advice on how to flash a custom rom safely. I've never flashed a custom rom before (have rooted a different android device before tho), so I appreciate any help.
I downloaded the blob file for TWRP 2.6.1.0 from here (techerrata.com/browse/twrp2/tf700t), but not sure how to proceed next, (also I don't see a link in your signature to your guide, but I am running a bunch of script blocking addins so maybe that's why) seems like all the guides I am finding say I need to get a copy of a fastboot program (but don't provide links), where can I find that? Again, I appreciate the help.
Sorry, my bad, I don't have a signature on XDA - wrong forum. LOL
My thread is here: http://forum.xda-developers.com/showthread.php?t=2688891
Ask any questions you may have in that thread, but it should cover your questions - I hope

Need help with my S6!

Hello there,
Please forgive me if i posted this thread on the wrong place.
-I would've not posted a thread here unless this got serious, so i own a Samsung Galaxy S6, it's 1 year old phone, when i first got it, i used it normally like everyone else and had no problem with it, but my curiosity got me to root the phone, i still did not get any problem with it until i chose to add a ROM. I used NNE 5.1 S8 port and it was working well until it got my phone broken somehow.
-My phone started acting really strange after 2 months of activity of that new ROM, my phone just started restarting randomly and it got me worried, i thought it's an application problem so i first just factory reset it. It seemed it was not the problem on an application, so i chose to change my firmware to a stock one. I searched up recently on the newest firmware for S6 and i found out it's: XEF (France) , PDA (AP): G920FXXU6ERC1 and CSC : G920FOXA6ERC1 on 2018-03-22. I Downloaded 4 files: BL,AP,CP,CSC , and i found out about PIT on one of the posts in this forum (Filename: SM-G920F-ZEROFLTE_EUR_OPEN.pit).
-Before i flashed with Odin, i wiped System, Data, Cache and Dalvrik Cache. The firmware worked well but after 1 hour it started doing the same thing but now differently. It happend to me only 1 time that it froze up on an application, but i think that is just an app problem. The main problem is that when i lock my screen, i cannot unlock it anymore, it just freezes there until it restarts after a short period of time. After the restart, it just keeps going, restarts, asks for pin, restarts and so on.
I tried removing the sim card and putting it back in, did not work.
I tried Safe mode, still same.
Model of phone: SM-G920F
Current firmware: XEF (G920FXXU6ERC1)
Android version: Nougat (7.0)
If you can help me, or you know something about this problem, please repost here, i would be really grateful since this is my only phone
Ininstall twrp backup everything most important efs partition.
Install samsung switch and pray that it asks you to do an update. If not try to flash a diferent version of nougat for example November security patch and try again with samsung switch
lenovot said:
Ininstall twrp backup everything most important efs partition.
Install samsung switch and pray that it asks you to do an update. If not try to flash a diferent version of nougat for example November security patch and try again with samsung switch
Click to expand...
Click to collapse
How could samsung switch possibly help?
I did flash it with different versions already, but no luck :/.
I've been praying a lot for this lately but it is not working lol
Please Bump this!
try doing this.
1) go here: https://updato.com/
2) choose download 2 roms. 1 nougat and another marshmallow (to my knowledge, stock roms are one file. no more splits and unless otherwise stated... no need for pit)
3) first flash nougat using oden
4) try the phone for a few some time.
if after a set amount of time, phone works fancy and no issues present then it's solved.
if not... install marshmallow. then try again.
if all this fails then...
install nougat. as soon as possible afterwards install twrp.
boot into twrp and just leave it there. my twrp locks after a while and screen goes dark until user interaction (just like it's supposed to)
if the same thing happens then its a hardware issue... probably... (i have had my main board fail... kinda similar not similar issue... hope you dont have the same issue and that its just software related)
good luck.
In my case every time there was an update available it would download the whole firmware and by doing so you would get the most fresh and updated version. Also it updates every partition to match

Desperately need help w/issue After 8.0 Update...

S8+ /S8 Global Unlocked Variants, (ie: G955FD, etc) Desperately need help w/issue After 8.0 Update...
Hi, I have a G955FD & have family members with this same model, as well as the Global unlocked regular S8-dual sim. We all have the same issue after the Samsung 8.0.0 update. The phone is no longer reliable. Randomly, these devices will not have any ring on incoming calls. If they don't leave a VM, then you have no indication of a missed phone call. In addition, random periods where text messages will also just not come thru. Difference on the texts is, when you reboot, they all populate in the message app and notifications. But the incoming calls are not known and lost forever w/o a VM left for you by caller.
I have been in contact with Samsung, although they indicate right off that I have no warranty because I didn't buy a carrier device from an authorized vendor for my local use, they were open & helpful to reveal that they are aware of '8.0 ringer issues' on the unlocked global devices. BTW, this must be a huge number of people across the world with this problem, but like my friends/family, originally think they have signal/carrier issues etc. Samsung says that it should be addressed in a patch or update..... but, WHEN? I have had a messed up phone for over 3months and counting.
The only thing that can be done to attempt having the phone work 'more often' is to do a restart every hour all day long and hope that your phone will ring when someone is calling.
I, personally, being the family tech guy, am the one working on the issue so I'm here to ask for help/input.
Been dealing with this issue for over 3 months now, here's some of what I have done and what I'd like help with please...
I have attempted 5x to install a custom ROM from XDA to alleviate this issue completely, but as of now, still unsuccessful. I've been rooting/hacking my android devices since my 1st but somehow can't get the process to work thru. At this point, using Odin, I have no issue to get my phone running TWRP and rooted. Somehow, after that point something isn't going right and my phone has to be re-odin flashed with OEM ROM and then wait 1 week for OEM unlock to re-appear to try again. So, If I could complete this process next time the OEM-unlock is back up, my problem would be over.
Now, since I am having issue with completing a custom ROM install... I thought, why not flash a previous OEM ROM (7.0 NOUGAT) and again, my problem should be over and I could wait until a 9.0 update to see how that goes. So far, any 7.0 stock ROMS I have been able to find/download, have 'failed' install in Odin. (I have standard Odin, patched and Prince Comsey) so I always try them all before I say it's a true fail.
Can anyone help me to understand why, with all the root/roms Ive done, cannot get custom ROM to complete install. I was trying for the CarHD or Batman. after rom flash, something goes wrong and the phone either goes bootloop or failed verify. (BTW, couple X I did flash the no-verify to alleviate that issue but still get bootloop or no new rom boot up)
The other thing I'd love to be able to do right now that 'should' be a piece of cake, (but hasn't been) until I figure out the custom rom install issue, is to ask for anyone that can post a link to a valid ODIN-flashable Stock 7.0 NOUGAT ROM for my S8+ G955F/FD. That would solve everything for now and I'd just disable updates for the interim. As previously mentioned, the couple I have found would only FAIL on Odin flash attempts. Seeing that this is a global, unlocked device, is it possible to flash a stock rom or flash a diff CSC that can get me North America Tmobile setup (my USA provider) I noticed that the global phone has no options to disable LTE or turn wifi calling on/off etc.
I apologize if I have jumped around in my post, not provided enough details or not written very eloquently, but I am happy to provide any other needed info to move forward if any of you have ideas here. I'm just at the end of my rope with this right now.
Any help, input here is much appreciated! TIA! mark~
Trying to be helpful here.
For some folks flashing with Odin the first run through errors/fails. That issue was a PITA. I found a post somewhere which said when you hook up the phone to flash with Odin, the first attempt will fail, but to leave the phone connected, go back into download mode, and flash again. Do not unplug the phone when you do this.
For some reason there's a kink in Odin with some folks.
That info, wish I could recall who by - they deserve the recognition, anyway it solved all my Odin errors.
JeffDC said:
Trying to be helpful here.
For some folks flashing with Odin the first run through errors/fails. That issue was a PITA. I found a post somewhere which said when you hook up the phone to flash with Odin, the first attempt will fail, but to leave the phone connected, go back into download mode, and flash again. Do not unplug the phone when you do this.
For some reason there's a kink in Odin with some folks.
That info, wish I could recall who by - they deserve the recognition, anyway it solved all my Odin errors.
Click to expand...
Click to collapse
hey jeff, thanks for checking in when the OEM unlock button returns again tomorrow, I'll keep this in mind on my next attempt. i did encounter that fail several times with some OEM firmware flashes (trying to go back to 7.0) and this should resolve that problem. overall though, my real issue seems to be when attempting a root/custom rom instead of a stock replacement... and 'after' i get TWRP completed. I'm doing something wrong with a button hold sequence or something else. maybe need flash 'do not verify' right off too. I'm gonna go extra slow/careful following each step from a great, detailed post for TWRP/ROOT/ROM procedure that i found here over weekend written by 'jesec' what i hate the most is, i only have 1 shot doing this with the oem unlock button, if messed up, have to re-flash a stock rom and wait another 7 days to try this all again.
i still cannot believe its been about 13wks and samsung says they are aware, yet still has not patched this problem. i love my samsungs but im so fed up, i almost ordered a oneplus 6 this weekend just because of this random no ring issue.
thanks much!

Lyf wind-4 always keeps refreshing even after flashing stock rom many times.

My lyf wind-4 is getting as a type of refresh like, all the mobile networks, running applications( open apps) & everything closes and goes blank and then again the android searches for mobile networks . this happens many and any time. Firstly my suspect was internal storage space but that was not, I tried installing system updates then also it was not resolved, I tried flashing the factory version of stock rom and even the latest version of stock rom available on internet for my phone but still the isue isnt getting resolved. I had also tried rooting & showing it to LYF service center but of no help.
I know this society is the only place where I can expect my desired solution about my android device. can you tell me that what is the problem with my device, software of hardware? I would also like to say you that after flashing stock rom it works fine for some days till I dont install any app or update any system or third party app even system updates.
Help me! please, I am fed up trying different solutions as I am not a debuuger or pro s/w developer.

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