Galaxy S8 losing UMTS 3g connectivity

Forums › Android › Galaxy S8 losing UMTS 3g connectivity

Alan2

21 posts

Geek
+1 received by user: 1

Topic # 228766 21-Jan-2018 21:56

My Samsung Galaxy S8 has a recurring problem when set to Auto 4g/3g/2g that it loses connectivity to UMTS 3g and falls back to 2g also missing calls and texts.

Rebooting fixes the 3g connectivity. Setting it permanently to 3g no auto switching seems to be the only workaround.

Anyone else had that problem?

1 | 2

1409 posts

Uber Geek
+1 received by user: 262

Subscriber

Reply # 1944554 21-Jan-2018 23:11

Vodafone, 2 Degrees or Spark? I had a strange issue tonight where I didn't receive any texts for around 1/2 hour then suddenly they all came through at once.

Laptop: MacBook Pro (15-inch, 2017)
Desktop: iMac (27-inch, 2017)
Smartphone: iPhone Xs Max 256GB 'Space Grey'
Additional devices: Unifi Security Gateway, Unifi Switch, Unifi AP AC HD, Unifi Cloud Key, Apple TV 4K 64GB
Services: iCloud, YouTube Premium, Wordpress, Skinny

Linux

3682 posts

Uber Geek
+1 received by user: 2128

Trusted

Lifetime subscriber

Reply # 1944565 22-Jan-2018 00:25

Have you tried a hard reset of the S8?

Linux

Ex JohnR VodafoneNZ 17 years 4 days

tripp

3079 posts

Uber Geek
+1 received by user: 777

Trusted

Lifetime subscriber

Reply # 1944609 22-Jan-2018 09:42

Bet its vodafone.

Linux

3682 posts

Uber Geek
+1 received by user: 2128

Trusted

Lifetime subscriber

Reply # 1944619 22-Jan-2018 10:09

tripp:
Bet its vodafone.

Bet it's not a Vodafone issue actually I know a few people on VodafoneNZ with S8 and no issues

Linux

Ex JohnR VodafoneNZ 17 years 4 days

hio77

'That VDSL Cat'
8874 posts

Uber Geek
+1 received by user: 1937

Trusted

Spark

Subscriber

Reply # 1944620 22-Jan-2018 10:11

Linux:
tripp:

Bet its vodafone.

Bet it's not a Vodafone issue actually I know a few people on VodafoneNZ with S8 and no issues

Linux

could be an outside model, which would make sense.

Realistically, it sounds like the OP is dropping down on an edge of the tower, and then has a constant data utilization so the device doesn't try to switch back up to 3g/4g.

#include <std_disclaimer>

Any comments made are personal opinion and do not reflect directly on the position my current or past employers may have.

1eStar

1495 posts

Uber Geek
+1 received by user: 344

Reply # 1944674 22-Jan-2018 11:15

One person supports this post

Change to a provider that doesn't have 2G

Alan2

21 posts

Geek
+1 received by user: 1

Reply # 1944688 22-Jan-2018 11:48

@matisayu, I'm on vodafone but it is not a vodafone issue other than I have a SureSignal device that it switches to for voice calls via 3g UMTS.

I've seen S8 text delays or loss attributed to the device's battery saver s/w switching off text services temporarily.

Linux

3682 posts

Uber Geek
+1 received by user: 2128

Trusted

Lifetime subscriber

Reply # 1944692 22-Jan-2018 11:54

1eStar: Change to a provider that doesn't have 2G

@1eStar say what??? Clearly the handset has an issue so it should be fixed by Samsung

Linux

Ex JohnR VodafoneNZ 17 years 4 days

hio77

'That VDSL Cat'
8874 posts

Uber Geek
+1 received by user: 1937

Trusted

Spark

Subscriber

Reply # 1944693 22-Jan-2018 11:55

Alan2:

@matisayu, I'm on vodafone but it is not a vodafone issue other than I have a SureSignal device that it switches to for voice calls via 3g UMTS.

I've seen S8 text delays or loss attributed to the device's battery saver s/w switching off text services temporarily.

So your saying, Your issue is actually...

Your dropping down to 2G and not roaming back onto the suresignal? thus missing txts/calls due to low/poor signal?

#include <std_disclaimer>

Any comments made are personal opinion and do not reflect directly on the position my current or past employers may have.

Alan2

21 posts

Geek
+1 received by user: 1

Reply # 1944694 22-Jan-2018 11:56

@hio77, the data drops back to 2g and the 3g SureSignal is not recognised. It's a standard global model SM-G950F supplied originally by Spark. It was never locked and is fully qualified for the vodafone frequencies.

Re your second comment, yes, exactly that is the problem. Since I've set it to 3g only I've had no issues.

hio77

'That VDSL Cat'
8874 posts

Uber Geek
+1 received by user: 1937

Trusted

Spark

Subscriber

Reply # 1944698 22-Jan-2018 12:02

As a test, could you disable your Mobile data. See if you return back to 3G overtime. (it may not be instant)

What i highly suspect your seeing, is you have a activate (in use/not idle) and thus the phone isn't priotisation switching to another cell.

#include <std_disclaimer>

Any comments made are personal opinion and do not reflect directly on the position my current or past employers may have.

Linux

3682 posts

Uber Geek
+1 received by user: 2128

Trusted

Lifetime subscriber

Reply # 1944700 22-Jan-2018 12:04

Alan2:
@hio77, the data drops back to 2g and the 3g SureSignal is not recognised. It's a standard global model SM-G950F supplied originally by Spark. It was never locked and is fully qualified for the vodafone frequencies.

Re your second comment, yes, exactly that is the problem. Since I've set it to 3g only I've had no issues.

@Alan2 It is running Spark software on the handset or have you upgraded using Odin to the VodafoneNZ software?

Linux

Ex JohnR VodafoneNZ 17 years 4 days

Alan2

21 posts

Geek
+1 received by user: 1

Reply # 1944702 22-Jan-2018 12:06

hio77:

As a test, could you disable your Mobile data. See if you return back to 3G overtime. (it may not be instant)

What i highly suspect your seeing, is you have a activate (in use/not idle) and thus the phone isn't priotisation switching to another cell.

I have tried doing a manual network search and selection but that did not recover the 3g connection. I had to restart to get it back. I'll try setting back to the 2g problem state and turning off the data tonight when I'm not needing it.

Alan2

21 posts

Geek
+1 received by user: 1

Reply # 1944705 22-Jan-2018 12:07

Linux:
Alan2:

@hio77, the data drops back to 2g and the 3g SureSignal is not recognised. It's a standard global model SM-G950F supplied originally by Spark. It was never locked and is fully qualified for the vodafone frequencies.

Re your second comment, yes, exactly that is the problem. Since I've set it to 3g only I've had no issues.

@Alan2 It is running Spark software on the handset or have you upgraded using Odin to the VodafoneNZ software?

Linux

Still running the Spark software. Wasn't aware of the Odin option.

Linux

3682 posts

Uber Geek
+1 received by user: 2128

Trusted

Lifetime subscriber

Reply # 1944707 22-Jan-2018 12:11

One person supports this post

Handset software is not created equal and carriers have different setups if I was you flash vfnz handset software from Sam mobile it's simple and I have never had an issue

Linux

Edit: Your issue might be the band scan used by Spark compared to VodafoneNZ

Ex JohnR VodafoneNZ 17 years 4 days

1 | 2