No Service/Network

[Rūmøur]

Have a Galaxy S21 Ultra SM-G9980 snapdragon version. Everything was working well since i bought it in April till i received the July security update. Ever since i updated the phone with the July security update i stopped receiving any mobile service or network on both sims. The phone displays a 🚫 sign in the status bar. I have been unable to receive any network signal. The sims are working fine when i put them in another phone. I have tried everything from doing a hard reset to resetting networks settings but still facing the same issue. I am unable to manually select a mobile network as well. I even sent it for repairs and they cant seem to fix it. They say it's a software issue. This issue started immediately after i did the July security update. I've now gone weeks without any service. Other users have reported this same issue after doing the July security update.

[Mitzzz999]

Yeah, I was hoping it might be the same solution or similar work around. A patch issue... I mean it's the same problem... for Snapdragon devices. What's interesting is that I've got a S10 plus that's a Hong-Kong Snapdragon... that's updated with no issues so far (touch wood)... I am hoping Samsung just release a new Over The Air update for you to get your phone working.

[Lord Monkey]

I FIXED MY PHONE but prepare to be disappointed.

Im in Australia my carrier is OPTUS and im using a esim.

I was adding new APN settings optus had provided on their website then I was able to turn off "automatic select" in network operator settings. Optus popped up as a button to press so then I restarted my phone and I was gettinf 400mbps download! Holy ***** to be release from the shackles of wifi calling felt so free. Like a spoon I kept fiddling in settings and 10 minutes later this was back "🚫". I haven't been able to recreate what made it work that time but I'd thought I'll share my story anyway.

[Rūmøur]

This definitely proves that this problem is a software issue