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S21 Ultra Calls mostly silent and fail after 10 seconds.

Pan82
Level 1: Joiner
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I have had this phone 5 months and had nothing but issues with it. 

I've ruled out SIM issues, apn problems, network issues. I've disabled WiFi calling, 4g calling and 5g and the issue is still there.

 

Phone calls are silent both ways with the cause being this device. I have factory reset it and still the exact same. O2 give basic advice saying the network may be busier than usual.

 

 

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MI5
Level 94: Supreme
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@Pan82 

You can send it into O2 to be repaired but personally, I'd contact Samsung to do it.

https://www.samsung.com/uk/support/contact/

I have no affiliation whatsoever with O2 or any subsidiary companies. Comments posted are entirely of my own opinion. This is not Customer Service so we are unable to help with account specific issues.

Currently using:
OnePlus 6 (O2 & Sfr), Z3 Tablet (Three UK), iPhone 8+ (EE)
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