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Original topic:

Dual Sim Stopped Working

(Topic created on: 18-01-2022 11:29 PM)
Hannah352
Apprentice
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Galaxy S20 Series

I have a dual sim in for a few weeks now with no issues.

Since I've done the latest android update (One UI 4), my 2nd sim isn't even detected. I've tried all the usual things (restarting, cleaning sim card etc) but can't work it out. Please help 😫 

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6 REPLIES 6
AM4N
Voyager
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Galaxy S20 Series
I know this is a straight forward answer, but Is SIM 2 activated in settings? 😂👍🏽
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BandOfBrothers
Samsung Maker ★★
Options
Galaxy S20 Series

That's a conundrum @Hannah352

Try https://www.samsung.com/uk/support/mobile-devices/how-do-i-clear-the-cache-on-my-device/ You may also need   to insert your earphones and or hook up to a laptop. No need to launch anything, just turn it on. But if that does not work then consider a back up and factory reset if the idea by @AM4N does not help.

I wish you all the best. 


Daily Driver > Samsung Galaxy s²² Ultra 256Gb.
Samsung Gear s³ Frontier Watch.
Samsung Galaxy Watch⁴ Classic.

The advice I offer is my own and does not represent Samsung’s position.
I have no affiliation with Samsung.

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Hannah352
Apprentice
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Galaxy S20 Series
Yeah it's activated. In phone settings it now says sim 2 not detected
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ROnm1
First Poster
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Galaxy S20 Series

Hi Hannah

Am having the same issue as you since the last update UI 4. Have been using dual sims on my s10e for several years without issue but since this update the 2nd sim has stopped functioning can't even register with network operators. Have tried all usual solutions but only the sim in position 1 will work. For the moment having to use 2 phones. Hopefully Samsung will launch a new update soon to rectify this mess.

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Hannah352
Apprentice
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Galaxy S20 Series

Mines same. I done the 2nd update lately and when I go onto settings, the card comes back again but then 2 mins later says not detected. I hope they fix it asap

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Hannah352
Apprentice
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Galaxy S20 Series

Thank you for your reply. I tried all this but didn't work. I assume its to do with the latest update

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