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Mobile Network not working on my S21 ultra after April Security Patch Update

(Topic created on: 13-04-2022 01:55 PM)
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Nahiyan89
Student
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I have been using my S21 ultra for a few months now. I bought it unlocked in the US but have been using internationally. After the latest update last night, my phone lost mobile Network connection completely. I tried taking the sim out, manually setting the access point, disabling/enabling sim, cache partition wipe, and finally network reset and Factory reset. Nothing is working. 🚫 Is displayed in place of the bars! Wifi/Bluetooth is working.

Now I have a $1000 phone without the phone part. Anyone, any advice?

3 REPLIES 3
hi1234
First Poster
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It might be locked to the us
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hi1234
First Poster
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From the update
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CarlH
Moderator
Moderator
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Phones are still locked to their respective region (even if 'unlocked' and not tied to a network provider). To unlock them, a 10 minute phone call using a SIM for the same region whilst in the country of origin is required. 

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