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Original topic:

SIM card problems

(Topic created on: 13-03-2020 04:49 PM)
18320 Views
Spacegirl
First Poster
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just received my shiny new S20 Ultra. However the phone does not seem to read the SIM card properly. It reads it and then says it cannot read it. And this happens every few seconds. Back and forth. Means I cannot make or receive calls. If I'm lucky enough to be on a call it switches off half way through. I've tried the sim on my old s10+ and even s8 and no problems. So doesn't appear to be a SIM issue. Is my phone faulty?

15 REPLIES 15
Saxy
Navigator
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I had same issue, albeit with an S20 plus. Suddenly after 3 days of use, it just stopped recognising the SIM. I was ready to have it replaced when as a last ditch resort i did a factory reset. This appears to have fixed the issue. As such, hoping this is a software issue rather than a hardware issue. I am hoping it stays fixed otherwise its a 7 to 10 day wait for a replacement phone. I posted a thread about this, one other person has reported the same issues with 2 of their phones.
Jed30700
Journeyman
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I'm from the Philippines, and I'm also experiencing this problem. I tried all the possible fixes and even did a factory reset twice! Still no fix. 

Daz21
First Poster
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Had the exact same issue.I used my old sim when I upgraded from my s8 to s20+5g and had issue straight where the phone would not recognise the sim card for around 10 mins but recently wouldnt recognise it at all.So went into my phone provider(Optus in Aus)changed to a brand new sim card and recognised it straight away.So recommend changing to a new sim card first if you havent already done so

Drpeppito
Student
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Same issue, at beging I lost SIM LTE signal and then the signal came back, after 3 days, I lost the SIM recognition at all. 

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richardattoe
Journeyman
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I have the same problem with my new s20 ultra. Its so annoying and have had no help from Samsung they gave rake the phone back to John Lewis but they are closed and I don't want to be without my phone. This happens to me a few times a day the phone just shows a message saying no sim card inserted and to fix it I gave to restart the phone. I am hoping that Samsung will do a software update to fix the issue.
ChrisSmallwood
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I'm having the same problem and have to restart my phone to make a call.

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vmonsta
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my phone arrived on Tuesday and I've spent 2 days trying to get it to recognise my O2 SIM!!

I even tried two other SIMs - one from BT and one from Vodafone and neither are recognised. They work fine in the old phones but not in the S20.

I have also done a hard reboot and have done a full factory reset - NO JOY.

I hazard to say I am beginning to hate Samsung 😠

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Michelleyeung8
First Poster
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I just purchased my s20 plus on the 14th Aug 2020 and on the first day it wouldn't recognised my sim. Thought it was a software glitch so I reboot the phone and it worked until today 4 days later it did it again. I restart, power off, taken the sim out and it worked on another phone. Whilst I tried to contact Samsung support chat and got disconnected three times the phone recognised the sim after 3 hours. I did absolutely nothing and it some how fixed itself.

I did notice that when it does happen it's when the battery is low. 

My concern is that if it is a known problem and it is happening on the first day after purchase then Samsung should be replacing these phones.

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urgiv
Journeyman
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Same here 2 month old S20 plus 5G and tommorow going 2nd time to repair centre for this issue 

 

First time arrived with no report fully dirty of fingerprints of engineer.... GRRR.

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Samsung UK no support at all just said sorry

 

This phone dint cost £50....

 

 

Latest SW installed no joy... 

 

Considering back to S9+ no issue for last 2 years

 

Screenshot_20200915-123007_Clock.jpg

 if anyone resolved issue please post it..

 

Thx Urgi UK

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