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Original topic:

MM sim 1 not allowed ( also wifi calling isn't showing network name)

(Topic created on: 11-29-2024 03:48 AM)
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bilayy
Active Level 4
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Galaxy S

1000022659.jpg

 Hi I'm having samsung S22 SM-S901U/DS. I've purchased it through a person. It was running one ui 5 and it's carrier was AT&T. But the person changed the CSC and says " two month e-sim time is remaining " however i want to upgrade it to one ui 6, so i just ended up upgrading software manually because it was not receiving OTA updates. Now i have one ui 6 installed on this device but this firmware isn't available for PAK csc (Pakistan) so therfore i have installed other csc. Thankfully I've got one ui 6 but the problem is when i put my sim in the mobile says "MM sim 1 is not allowed" i know it's non pta ( not paid tax in pakistan ) but there should be wifi calling is a great option for NON PTA mobiles in pakistan, but still wifi calling isn't working for my sim card not recognizing it nor the signals is available. But showing me network name in sim card manager and also searching the carriers in sim card manager.

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7 Comments
ShoaibN
Active Level 1
Galaxy S
You can install U1 version which is unlocked version for US.. maybe it will support dual sim / esim after that
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bilayy
Active Level 4
Galaxy S

Binary U1? Or csc bro? Mera phone non pta mein wifi calling k through sim use krna chahta hun par nhin hurhi. 

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ShoaibN
Active Level 1
Galaxy S
I dont think sim will work via wifi calling.. I had tried this once on non pta s21FE.
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Nido77
Beginner Level 2
Galaxy S
I have not showing wifi calling in my s21 5g
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bilayy
Active Level 4
Galaxy S
Which country?
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Nido77
Beginner Level 2
Galaxy S
Sm-g991u1
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Nido77
Beginner Level 2
Galaxy S
Kindly guide
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