SM-N9860 - "Not registered on Network" error suddenly in the UK - Samsung Galaxy Note 20 Ultra Questions & Answers

Hey guys, really hoping someone is able to help me.
Back in September 2020 I purchased the SM-N9860 variant from T-Dimension for use in the UK on EE's network. Everything has been running smoothly since day one, up until yesterday (31st May) where the phone would constantly struggle for signal, flip flopping between "No service" or extremely slow 4g. If I try to make a call I get the "Not registered on Network" error message.
Since then I have done everything I can think of:
- Restarted the phone several times
- Switched Airplane mode on/off
- Manually selected my carrier
- Reset network settings
- Tried my sim in another phone (which worked fine), and tried a different sim in my Note 20 (exhibited the same behaviour of "No service")
- Checked IMEI but it's not been blacklisted
- Tried my sim in the SIM2 slot
- Full factory reset
but none of them made a difference.
Tonight I decided to try and flash different firmware to see if that might have any effect; both TGY and BRI firmwares were flashed successfully with Odin but neither have solved the problem. I'm now at the point where in my home I can see the 4g symbol appear above the network status for 30s - 1min but it never actually loads any data, before returning to "No service". Compared to my fiancee's S10+ which is also on the EE network and easily hits 20Mbps without worry in the exact same room.
Does anyone have any suggestions of what to try next? Has anyone else encountered this?
Thanks,
RBrNx

I've spent some more time investigating this and I am 99% sure it's an issue with the device.
Below you can see a screen recording of the issue that I made this morning while I was out a walk, you can see it goes from having signal but no internet ("Emergency calls only"), to "No service", then to 4g but I wasn't able to even load a website, before it moved back to "No service".
I've also attached two screenshots from the NetMonster app, one is from my Note 20 and the other is from my fiancee's S10+. Both were side by side when the screenshots were taken - mine has no service and her's has 4g.
I've since tried a number of other SIM cards in my phone, including another EE SIM and a Three SIM - both work immediately in the S10+, but neither are able to register when put into the Note 20.
I tried to contact Samsung Support but they were next to useless. The UK support team told me I'd need to contact Hong Kong support "as they have full access and information", but all the HK support could do was tell me to visit the HK Support Center...
I'd love to be able to fix this issue but I'm not sure what else to try
EDIT:
Some more information that I forgot to add - When I am out of the house I can occasionally receive calls/texts or use the internet, so I know for sure that they are all working (i.e EE haven't blocked my account) but most of the time I am stuck with "Not registered on network"
I'm wondering if it's an issue with the antennas, it's almost as if they are somehow weaker or less receptive than they were a few days ago

Does it behave this way when in safe mode ? How about in 3G mode? If it's hardware then Samsung doesn't recognize devices that are from other regions in relation to warranty work. You'll have to test the after sales support of T Dimensions now. Failing that sell it as is on eBay for parts or try and trade it for another device.

I'm using the same device on Vodafone UK and no issues here at all

I'm using an N9860 HK model, also from T-dimension, with EE since last autumn. I have not had any such problems with mine.
I haven't flashed or rooted the phone, but I have tinkered in the service menus in order to gain 5G service and possibly other service improvements.

Yeah, same for me. Changed the 5g whitelist settings but no root.

Related

[Q] anyone getting sim card does not allow connection to this network?

I have gotten this message 3 times in the last 5 days. Each time I need to do a reboot to restore cellular/sms service (toggling airplane, wifi, bluetooth, sync, and 4g do not restore cellular/sms). The phone has the same AT&T sim card since day 1 and I have never removed it.
Is this a faulty phone, sim card or both?
gtabfish said:
I have gotten this message 3 times in the last 5 days. Each time I need to do a reboot to restore cellular/sms service (toggling airplane, wifi, bluetooth, sync, and 4g do not restore cellular/sms). The phone has the same AT&T sim card since day 1 and I have never removed it.
Is this a faulty phone, sim card or both?
Click to expand...
Click to collapse
Did the sim come with the phone? ATRIX 2 needs newest of sim cards to function properly. If that's not the problem then I'm not to sure.
Sent from my MB865 using XDA App
Yes, same sim card that came with phone.
Could be a faulty Sim, i've had that happen before with other phones, just go to at &t and show them the problem, they should replace it for you!
Sent from my MZ617 using Tapatalk
(Hope you understand my english)
I wasn't able to solve this problem about an year. But did. And totally sure that it is Device's defect (in some cases it is a ROM deffect as in my case, in other - hardware. Smth like stack overflow issues at GSM controller or so). A year ago when I had face this "sim card does not allow connection... " problem, there are no google serch results on this keywords request. Any. To remove this message I was ought to reboot my device every time it appears. And I was thinking that it is normal behaviour for my device. But now there are lot of complainings at the web ( minimum 5 of Galaxy Tabs P1000, thousands of HTC Disire, few motorolla Deffy, 10 Galaxy Ace, few of Nexus S and so on), so I understand that I'm not alone, and problem is known. So I went to Samsungs Service and they confirmed that it is famous problem, have flashed my phone with some magic ROM (magic because it is official but does not available anywhere in the web, XDA or samsung sites! ) and now my phone works fine. Any other solutions like battery removing, *#*#4636#*#* sirvice menu, new sim-card, flashing variety of modems and roms, didn't helps me. This is not faulty sim. This is serious device's defect. Bring your phone to manufacturer and let them repair it or give your money back. This is their problem not your.
using old 3g prior sim card
With ATT---If you took your old 3g sim card out of old phone and used it. You will get this message. You need to activate the 4g card that came with phone
537magspc said:
With ATT---If you took your old 3g sim card out of old phone and used it. You will get this message. You need to activate the 4g card that came with phone
Click to expand...
Click to collapse
Not true.I'm using my old 3g sim with zero issues.
Sent from my MB865 using XDA
Same issue in Mumbai India
CS4 said:
(Hope you understand my english)
I wasn't able to solve this problem about an year. But did. And totally sure that it is Device's defect (in some cases it is a ROM deffect as in my case, in other - hardware. Smth like stack overflow issues at GSM controller or so). A year ago when I had face this "sim card does not allow connection... " problem, there are no google serch results on this keywords request. Any. To remove this message I was ought to reboot my device every time it appears. And I was thinking that it is normal behaviour for my device. But now there are lot of complainings at the web ( minimum 5 of Galaxy Tabs P1000, thousands of HTC Disire, few motorolla Deffy, 10 Galaxy Ace, few of Nexus S and so on), so I understand that I'm not alone, and problem is known. So I went to Samsungs Service and they confirmed that it is famous problem, have flashed my phone with some magic ROM (magic because it is official but does not available anywhere in the web, XDA or samsung sites! ) and now my phone works fine. Any other solutions like battery removing, *#*#4636#*#* sirvice menu, new sim-card, flashing variety of modems and roms, didn't helps me. This is not faulty sim. This is serious device's defect. Bring your phone to manufacturer and let them repair it or give your money back. This is their problem not your.
Click to expand...
Click to collapse
I have exactly the same issue randomly at times when I try to register on network manually (MTNL Dolphin 3G - Mumbai). Unrooted MB865 ver 2.3.6 & updated on 18th May 2012 to System Ver 55.28.37.MB865.AsiaRetail.en03. If I keep the setting as Automatic in Type of Network & Operator it functions fine fluctuating between Dolphin for local access & CellOne on roaming access in the same area based on cell tower connection the phone registers on alternating between "E" & "H" automatically based on cell mast direction proximity, however if I select 3G only and uncheck automatic for operator then the phone searches for signal for a very long time and fails to show any operator saying "no connection available" & sometimes when "Dolphin" network does appear and try to select manually get the error as "this sim card does not allow connection to this network". I did complain with the service provider and they were supposed to get back to me after checking in their switchboard exchange where I also provided them my SIM number in addition to my cellphone number(no response). Also as is case with poor service of all Indian cell network providers even in urban cities, also face random peculiar issue of call not being received inspite of signal available on the phone & network asking me to recheck the number I have dialled while placing outgoing calls though it is ok and signal is sufficient. Also "Network Speed Booster" app looks like a lot of bull (any other good apps??)
I needed to know using the secret Menu *#*#4636#*#* for 3G GSM service which kind of network I should ideally select for best results & does this setting override the regular menu network settings??
I get "G", "E", "H" randomly based on my locations but no "3G" or "H+" and further at times these icons are grey and sometimes blue and in either cases randomly at different locations sometimes data throughput is not there as only one of the arrow shows active blinking. Any advise on the status based on colors and the blinking of the arrows?? Thanks!

[Q] LG Nexus 5 fails to recognize celullar network

Hello,
I have a Nexus 5 phone that came with Kitkat a few months back. The phone worked without issues until I decided to update to Lollipop 5.0 (OTA update) at the end of November. Initially the phone started to have troubles to detect the network at certain times - typically "playing" with the settings "Preferred network type" by changing from 4G to 2G, restarting, letting the phone detect the network on 2G mode and change back to 3G or 4G would fix the problem. The issue became more and more frequent until a point where i can not change the "Preferred network type" from 4G to any other type (as if it is "glued" on that setting). At this point my phone does not recognize at all the cellular network but It does seem to recognize the SIM card since i need to enter the 4 digit code to unlock SIM and it displays the network name, just no service.
I've researched the internet and I've tried several things but nothing seems to fix it such as restart mobile, change to airplane mode and back, take out and re-insert SIM card, request new SIM card from operator. The APN settings seem to be OK.
I've noticed that a new 5.1 version just came out and although I was not fully familiar with the process i decided to give it a try (after reading several instructions) and update manually (using factory images posted) and see if that would fix it. The phone is now with version 5.1 and still can't recognize the cellular network - no service. Everything else works fine, including Wi-Fi.
Has anyone experienced such issue after OTA update? The only odd thing I can think of is that I did the initial OTA update to 5.0 in US while i was on travel from Europe, but I can't say if this would in some way contribute to the issue. The mobile is D821 model.
Since I was stuck and mobile is within warranty period, I have sent it to service repair. I would be interested to know ideas of what could be the issue cause.
Sorry for long message, any help would be very much appreciated.
Pedro

Question Samsung A32 5G - SM-A326B/DS, does not connect to the cellular network

I have owned the Samsung A32 5G for about a year, SM-A326B/DS model.
For about a month, with my sim cards and with any SIM card I have tried, even of various telephone operators, the phone recognizes the signal only for a few moments, about a couple of seconds (and in those 2 seconds any SMS also arrive ), then the word "registration to the network" appears and since that moment the signal bars go to zero, as if the SIM was not present, or as if the SIM has expired (I can only make emergency calls), and therefore the phone is "without signal", therefore no SMS coming etc.
I tried various SIMs and various telephone operators, the same problem, with both SIM slots.
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What could be the reason for this malfunction?
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Question Cellular Network not working correctly

I noticed a few days ago that my phone (SM-S908E) had no service from my network provider (appears as "emergency calls only" or "no service").
The SIM and all its services works perfectly fine on any other device, and any SIM (from the same provider) gives me the same issue on the S22U, the network appears when try to manually select it, but never connects, it takes a lot of time and just a "Not Available" appears later.
I noticed later, while moving, I have perfectly fine signal sometimes, even 5G when available, I noticed this outside and near cellular towers.
My network provider says everything is fine on their side, the SIM and the device itself (well they only checked the SIM port). It make sense to me because I can get the service in my old S9 and S20 with that SIM.
My conclusion is that the device is not able to get the signal as before (like a range thing?), and because I don't know when it started but I know I updated an OTA on early feb (I noticed this issue on feb 5th), I want to ask you guys:
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- Can I redownload the update on any official way to reinstall it? I remember exactly that as a "repair" function on smart switch pc but is not availble on my device.
- Can I downgrade to my previous firmmware (with odin) to see if this was a update error, and if I can, that keeps the official status?
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New phone, new sim, wifi works but no network data

I recently bought a Note 20 ultra off eBay about 3 weeks ago. I have Page Plus and have had them for about 10 years. I called Page Plus and registered the phone or SIM and IMEI and I had no network data but Wi-Fi, SMS and phone (over Wi-Fi I guess) is working but if I turn the Wi-Fi off there is no internet. I contacted Page Plus several times but by the 10th phone call I was going nuts so I assumed it was a bad card & ordered a new SIM, however it is the same situation. I'll submit any info needed, I really need to get this straightened out quickly, my mom is in the hospital and even though most of my calls are coming through I need to make sure everything on the phone is working In case of an emergency. When I'm driving down the road I cannot get any phone calls or text messages.
Device settings...
No one?
Seems like Samsung screwed something up
I had a S20 PLUS (G986U / u1) which was working fine on android 12. Factory Reseted it, gave it to someone who updated phone via ota and now it has no data
But my case is different, I I can't even type out apn for mobile data, when I press the Access Point Name nothing happens, doesn't let me in the apn menu to add/change it
Hey! I'm having the same issue with my Note 20 Ultra, US edition! I can make calls, but mobile data is not active and I also can't change the APN! The menu is not opening at all and also, it's not greyed out!
P.s. - from India, with Airtel SIM.
Mine is Solved! I think it has something to do with the ICCID, SIM or ESIM situation. See attached photo. I called Page Plus for the fifth time and told them my network showed as disconnected. She reset my account & I went through a certain order of steps, I shut my phone off, removed my SIM card (gave her the number again, for the 5th time), restarted, reinserted my SIM, turned data on, roaming off & Wi-Fi off, restarted my phone, toggled between wifi off & on & Boom! The LTE sign popped on, now I'm able to use both, the LTE sign doesn't show when I'm signed into a Wi-Fi network but the mobile data is now definitely working. Hope that helps.
Glad it worked out for you!
My situation is a bit difficult as it's not an Indiam handset (Samsung released the Exynos mode here) and my current service provider (Airtel) has no idea about my situation.
Will keep looking, if someone can crack this!

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