All of a sudden I have no signal on my 5X, Wifi works but no carrier signal, it acts as if there is no sim but it does recognize a sim is in the phone, I also am sure the sim works because I put it in another phone and it works fine. I've tried resetting network settings, APN, and factory resetting the phone. Any ideas on what happened or suggestions on how to fix this? I googled around and could not find anything. It did not get wet or suffer any drops/damage. Phone is on Verizon if that matters.
Related
Hello, overnight my phone has stopped connecting to LTE. I've done many resets, did an ODIN back to stock, and tried different SIM cards. The only way I can get data to work is to go into setting and enable 2g. Any other settings show 4G in the status bar, but no data comes through. I can make calls, but can't receive any, if i'm on anything other than 2g. I'm on the latest COJ5 and am completely out of ideas. If anyone could help, it would be a huge lifesaver. Thanks. Both SIM cards work perfectly in other phones.
Hi I have exactly the same issue
Any luck finding solution
?
I haven't found anything that works yet. I tried factory resets, odin, and went into the dialer mode and manually tried to activate different bands. No luck yet
Marafat said:
Hi I have exactly the same issue
Any luck finding solution
?
Click to expand...
Click to collapse
Did you guys make sure your APNs are properly set up?
Yes, I deleted and redid the APNs a couple of times. Have no idea what else I can do to fix it.
Hi. Recently, my signal bars on my phone went blank and I can't get my signal back. I tried to remove/reinsert my SIM card and after a few tries, my phone stopped detecting it altogether. I got a new SIM card, but the problem still persists. Searching for service providers gives several results, but all of them are "unavailable at the moment". Factory reset didn't help either. Please help
Shilq said:
Hi. Recently, my signal bars on my phone went blank and I can't get my signal back. I tried to remove/reinsert my SIM card and after a few tries, my phone stopped detecting it altogether. I got a new SIM card, but the problem still persists. Searching for service providers gives several results, but all of them are "unavailable at the moment". Factory reset didn't help either. Please help
Click to expand...
Click to collapse
If it was working fine and you didn't change anything and all of a sudden you just get no signal, I would first call your service provider and have them check it out, and if they say everything's OK, you should get a new sim, and have them switch the number to it, and if that doesn't work, it's probably a hw failure. The only things you could check on the phone is if you accidentally switched data off, or hit airplane mode, etc.
levone1 said:
If it was working fine and you didn't change anything and all of a sudden you just get no signal, I would first call your service provider and have them check it out, and if they say everything's OK, you should get a new sim, and have them switch the number to it, and if that doesn't work, it's probably a hw failure. The only things you could check on the phone is if you accidentally switched data off, or hit airplane mode, etc.
Click to expand...
Click to collapse
Airplane mode is off, data is on. I already got a new SIM, but the problem persists. Sadly, I'm not sure I can call my service provider, since I'm studying abroad and I'm yet to learn the language. And I'm really hoping it's not the hardware, it shouldn't be. Also, I don't have signal bars
I had this phone for a while, put it in storage (my desk) and then gave it to a family member. After putting sim card and flashing latest slimrom 4.4.4 SGH-M919 (baseband m919uvuamdl)
wiped phone etc... restored msgs and few things.
Everything seemed fine, after phone goes to sleep for a min or two, it shows then no service!
So I tried all apn settings etc... switching from 4g to 3g, then did 2g and boom it stays connected on 2g without issue.
So went and got a new sim card, apparently this was very old 2g sim card that I cut to fit into adaptor.
Does anyone know what is the issue? the new sim is having exact same issue and only works on 2g, if putting it to 3g or 4g, it works for a while, but after it goes to sleep and you wake it it shows no service.
Also this kills the battery as the phone seems to be trying to connect?
Should I flash the rom again? do I need different baseband? flash to older version of rom?
drutort said:
I had this phone for a while, put it in storage (my desk) and then gave it to a family member. After putting sim card and flashing latest slimrom 4.4.4 SGH-M919 (baseband m919uvuamdl)
wiped phone etc... restored msgs and few things.
Everything seemed fine, after phone goes to sleep for a min or two, it shows then no service!
So I tried all apn settings etc... switching from 4g to 3g, then did 2g and boom it stays connected on 2g without issue.
So went and got a new sim card, apparently this was very old 2g sim card that I cut to fit into adaptor.
Does anyone know what is the issue? the new sim is having exact same issue and only works on 2g, if putting it to 3g or 4g, it works for a while, but after it goes to sleep and you wake it it shows no service.
Also this kills the battery as the phone seems to be trying to connect?
Should I flash the rom again? do I need different baseband? flash to older version of rom?
Click to expand...
Click to collapse
Try a different rom....if that doesnt work...then flash the stock firmware with odin (twice to make sure it sticks) and see if its fixed.
I went and did one of full firmware over Odin
http://forum.xda-developers.com/gal...in-firmware-kernel-modem-recovery-tw-t3276231
you know whats crazy? it worked but it kept the old apps and accounts? Half the stuff didnt work, so I went and did a factory reset, that wiped everything and now the phone seems to be back to stock and working properly.
crazy, never thought that a ROM update could mess things up for the radio?
I thought it may have been an update to my app (Amazon Flex), so I rolled back to a previously saved version, but the issue persisted.
If I dont have a sim in the phone, the app will say that it cant get an accurate GPS location. Tried rebooting, airplane mode, clearing and redownloading the AGPS data.
The only thing that makes it work is inserting a sim card.
This device has LTE issues for me, so I prefer to just leave it on WIFI tethered to another device. But due to this issue, I have to remove the sim from my primary phone to make this phones GPS work.
Still havent figured out whats going on. I've just left the sim in there. If I can at least get the LTE to stay on consistently, then I'll be happy.
Scouring the forums right now trying to find posts relevant to me.
After a phone restart, VoLTE/4G Calling and Wifi Calling work for a short period, then stops working, usually after moving around between mobile towers and/or wifi hotspots.
I find it happens whenever the device loses mobile signal, or when the device flips down to 3g and then back to 4g, 4g data service returns but both VoLTE calling and WiFi Calling remain disconnected despite being enabled in settings.
This happens on my primary SIM only. I have a second sim in my phone at the same time which works perfectly with both VoLTE and wifi calling. I upgraded from a Mi 9 phone which worked perfectly with both these SIM cards.
Looking at the device logs (With Logcat reader), I get lines like
QImsService] ImsServiceSub : [0] Permanent IWLAN reg failure (IKEv2 auth failure)
I also see
IKEV2ErrorReceiver] Canadian configure is not set, return
Other things I've tried:
Updating to the latest MIUI version (12.1.5.0)
Network settings reset
Only using the one sim
Removing the second SIM
Clearing all caches
Clearing caches and storage of things like CneApp, Carrier Services, Phone Services, Phone, anything carrier related
Resetting APNs, adding APNs with bearer set
Setting phone to prefer 4G/LTE (ie do not connect to 5G)
Removing my VPN, same problem with VPN installed or not installed.
Removing sim cards and leaving phone off for a while (an hour or so)
Getting a replacement SIM
I have not tried a factory reset yet, as I am not confident in being able to back up the phone fully and other threads with similar issues suggests that won't solve the problem.
One way I've managed to get it stable is to dial *#*#4636#*#*, go to phone and set preferred network type to "NR/LTE". The phone does not connect to 3G or below in this mode, and unfortunately this setting gets reset when the phone restarts.
At this point I think its a problem with the MIUI software version itself, or some firmware driver that comes with these versions of MIUI. I'm hoping MIUI 12.5 will fix it, but I'm wondering if anyone else has seen this issue or knows what else I can try.
Upgraded to 12.5.1.0(RJDEUXM) and the issue is still present, also tried asking my operator to completely reprovision the line with no luck.
I guess I'm stuck with this behaviour until I upgrade my phone
STEP #1) See if VOLTE works normal when switching towers with a different phone.
If it does then you can try the things below, if it doesnt maybe it might be the cellular carrier issue.
If other phones work find then please note that VoLTE mainly works on 4G LTE ... donest work on 2G or 3G and may or may not work on 5G depending on your carrier. Find out what NETWORK BAND your phone is using when VOLTE is working. You can use a app like
Network Cell Info LiteOnce you find out the band you can then use a script or use a app so it stays on that network BAND. A little more advance but it may also possibly be a DNS issue in the tables during the change of towers during the reprovisioning... you can try a script to flush the DNS and reload the tables when the network info changes or bind them statically for testing purposes.
Still doesnt work it may just be the firmware's modem issue with that phone in the way it handles re-provisioning process during cellular multiplex switching.