topic Re: Samsung s20 5G in Get Support

Samsung s20 5G

Handy1 — Mon, 28 Aug 2023 19:02:20 GMT

So my friend here just activated him in the flash promo 30GB for $40 5G . However the phone only shows LTE and no option in settings for 5G . But when I put his SIM card in my phone (iPhone 14 pro max ) it shows 5G . And oddly enough if I put my Telus SIM card in his phone . He then has the option for 5G . . What would be the reason for this and thanks

Re: Samsung s20 5G

softech — Mon, 28 Aug 2023 18:56:49 GMT

@Handy1

there was another post about S20+ earlier

https://productioncommunity.publicmobile.ca/t5/Get-Support/Samsung-S20-5g/m-p/1035955

I am not 100% sure, but some research around suggest S20 is one of the weird models that it sometimes hard to bring out the 5G option. 😞

Share your finding if you have a solution

Re: Samsung s20 5G

BKNS27 — Mon, 28 Aug 2023 18:58:49 GMT

@Handy1

Worth a try, reset network then reboot your friends phone with the SIM in the phone.

Also try doing a speed test to see what the download and upload speed are.

Re: Samsung s20 5G

Handy1 — Mon, 28 Aug 2023 19:01:09 GMT

@BKNS27 Thanks we have definitely tried that also and @softech yes Ty I remember that thread too . It would seem it’s a issue with PM because his phone has the option for 5G with my Telus SIM card and connected to 5G

Re: Samsung s20 5G

computergeek541 — Mon, 28 Aug 2023 19:01:34 GMT

@Handy1 wrote:
So my friend here just activated him in the flash promo 30GB for $40 5G . However the phone only shows LTE and no option in settings for 5G . But when I put his SIM card in my phone (iPhone 14 pro max ) it shows 5G . And oddly enough if I put my Telus SIM card in his phone . He then has the option for 5G . . What would be the reason for this and thanks

Samsung devices use customized software configuations dpeending on the carrier of the inserted SIM card. Samsung and/or Public Mobile have disabled the 5G network option.

Re: Samsung s20 5G

Handy1 — Mon, 28 Aug 2023 19:04:24 GMT

@computergeek541 Samsung has not disabled the 5g option. The device has the correct CSC of PMB and matching firmware version as shown in the pic

Re: Samsung s20 5G

softech — Mon, 28 Aug 2023 19:12:26 GMT

@Handy1 with the number of posts I see, I wouldn't see it was PM hiding it. And if PM is the one hiding, it would be with the account and you wont see it with the iPhone

it is a bigger chance a Samsung issue as well as a combination of the current firmware and the CSC code. But in short, I don't think there are much else you can do if you try all these

Reset all networks (which you did)
update to latest firmware
Change the network mode from Automatic to manual and pick Public Mobile
Wipe the phone. Then re-setup the phone with a different carrier sim - active one and DO NOT restoring old backup and see if the 5G options shows. If so, try PM sim
confirm CSC code and possibly flash another Canadian one, maybe Telus.

Re: Samsung s20 5G

Allport — Mon, 28 Aug 2023 19:14:54 GMT

The network reset has been done. The device is up to date to the most current version for this carrier. Manually selecting a different carrier has no effect. I confirmed CSC is correct and even forced a manual change to PMB just to be sure. I was going to use Odin and reflash the firmware but I don't see the value if it's only the same version. The fact that a Telus Sim gives me 5g option and connected at 5g means a full device reset should not make a difference... I'm stumped

Re: Samsung s20 5G

computergeek541 — Mon, 28 Aug 2023 19:17:19 GMT

@Handy1 wrote:
@computergeek541 Samsung has not disabled the 5g option. The device has the correct CSC of PMB and matching firmware version as shown in the pic

Can you confirm your statements from earlier? Did you insert a Telus SIM card into that same S20 5G device and the 5G network option re-appeared? That would mean that the option has been disabled by Public/Samsung.

Re: Samsung s20 5G

mtbman — Mon, 28 Aug 2023 19:20:49 GMT

I have the Samsung S20 Ultra 5G and it was showing "5G" when I was with Telus last week.

As soon as I ported over to PM over the weekend, it only shows "LTE+".

Re: Samsung s20 5G

Handy1 — Mon, 28 Aug 2023 19:24:47 GMT

@computergeek541 Yes I can confirm this . With my telus SIM card in that phone it will connect to 5G and show the option for 5G

add that’s what’s most strange is because his PM sim in my phone shows and connects to 5G @computergeek541

Re: Samsung s20 5G

computergeek541 — Mon, 28 Aug 2023 19:25:07 GMT

@Handy1 wrote:
@computergeek541 Yes I can confirm this . With my telus SIM card in that phone it will connect to 5G and show the option for 5G

I can also confirm that with a Telus-sold Galaxy S20 FE 5G, there is no 5G network option in the menu if a Public Mobile SIM card is being used.

Re: Samsung s20 5G

Handy1 — Mon, 28 Aug 2023 19:29:11 GMT

@computergeek541 It’s not Samsung fe .. it’s a full s205G even says 5G on the start up screen of the phone . When powering on

Re: Samsung s20 5G

computergeek541 — Mon, 28 Aug 2023 19:34:29 GMT

@Handy1 wrote:
@computergeek541 It’s not Samsung fe .. it’s a full s205G even says 5G on the start up screen of the phone . When powering on

I'm aware, but I'm only trying to show that it's not isolated to one specific model.

Re: Samsung s20 5G

Allport — Mon, 28 Aug 2023 20:34:43 GMT

A Telus sim card works fine.

Re: Samsung s20 5G

Allport — Tue, 29 Aug 2023 14:03:25 GMT

After a brief talk with Telus data support I have the root cause of the issue and the broader effect...

All Samsung s20 line of devices have an incompability issue with Koodo and public mobile when it comes to 5g and the initial handshake on connection. Due to how public and Koodo handle the handshake they interpret the connection as not supporting 5g and there for block the connection. That explains why my device works on Telus and my Sim works on the different device but the combination does not work on mine.

So despite being states as supported this line of devices are in fact NOT supported on public mobile correctly. A firmware fix will need to be provided by Samsung to work around this issue but I wouldn't hold your breath for that.

Re: Samsung s20 5G

hTideGnow — Tue, 29 Aug 2023 14:09:14 GMT

HI @Allport

thanks for sharing

Re: Samsung s20 5G

burkely001 — Tue, 29 Aug 2023 14:54:38 GMT

So, I've been doing some major research as to why I cannot get 5G on my s20+ 5G. The conclusion I've come to, is that the phone locks to the first Providers CSC. What I've found is that the phone needs to be flashed or a factory reset of the phone performed in order to reset that CSC. I willl be backing up my phone soon-ish and performing a reset in order to test this out. Just need to pick up a new SIM card first.

Re: Samsung s20 5G

Allport — Tue, 29 Aug 2023 15:06:53 GMT

I have reset the CSC and changed it as well. Inserting the public Sim card sets it right back. Changing it to Telus with Sim card installed using the samfw tool off xda forms didn't seem to help either.

If you want to try anything then use the tool to set the CSC to Telus with Sim already installed and reset the device and let me know cause it didn't work for me.

Re: Samsung s20 5G

dust2dust — Thu, 31 Aug 2023 05:34:51 GMT

@mtbman- Fantastic work and great of you to write that up in such detail. It's nerve-wracking doing it but the results can be satisfying.