Mobile data issues | S22 Ultra

[misskirstyleighx]

Is anyone else having issues with mobile data not working, yet showing strong connection on 4g/5g? I've done everything possible to try and get it working properly but still having issues with mobile data, sending and receiving calls & texts.. Unless im on the home wifi and using wifi calling. Hoping i'm not the only one! Getting a little frustrated with it saying I have full reception and mobile data saying 4G or 5G and it not working, or just Emergency Calls Only :( only started happening when I updated my phone to 5.1 with the October security patch.

Should also add, I'm in Brisbane, Australia 

[Troubadour]

Yes, obviously living in Brisbane is a problem 🤣
Try the following:
"For cell connection search Google for "e.g. Telsta apn settings" in your phone under Settings search for "Access Point Names". Compare the two, if different VERY carefully note the Google result 100% correcctly
Also note your phone settings in case you want to revert. Update phone setting.Restart, noting you may lose phone settings."

[misskirstyleighx]

They both match up. Tried resetting Network Settings, Replacement Sim, Factory Restting my phone, toggling flight mode on and off. I've been into both Optus and Telstra and they can't work out why it's doing it. Was with Optus when it started, then switched to Telstra once I thought Optus was the issue.

[Troubadour]

Thanks. Noting that you had connection before the update the following iexcept for 2s unlikely to help, but worth checking. Check is if the cell tower signal is strong enough. Note that a 3G signal travels the furthest, a 4G signal less so, and a 5G signal least of all. So you could try setting your phone to 4G max. Go into Connections, Mobile Networks, and set to 4G/3G/2G.
To literally check coverage load an app called Aus Phone Towers. When open drag in hidden left side panel and play with settings. In the map itself click on one of the "droplets" it will show the coverage for that provider. This includes the frequency. You can check the frequency against your phone's available frequency by searching for"your model name gsmarena" High up on the page, click on network and it will show your phones settings, compare with Aus Phone Towers map.
Another way to check your phon's signal strength more accurately is to go to Settings, scroll down to About, Status Information, SIM card status and look at Signal Strength. If it reads -60 dBm that's brilliant, greater than -100, connection will start to fail.
Also, as Aus Phone Towers shows the direction of the cell tower. Go outside and line up with the cell tower and see if that reduces the probkem.
Finally, as I think about it, because you have wi-fi calling, it is not likely to be a connection problem as wi-fi calling doesn't work if your phone is off.
1. Open Phone app, then Call Settings, scroll down to Permissions, check if required permissions lists phone, contacts, call logs, camera, SMS. plus any optional permissions you want to give.
2. Sometimes updates leave old data in caches which interfere with the update. So go to Settings , open Apps, search or scroll to Phone, sroll down to Storage,STOP before proceeding, make sure Google is your default storage for phone numbers as you will lose phone numbers stored elsewhere. Clear data and cache and restart. Test.

[misskirstyleighx]

Phone signal strength is sitting around -90 dBm, not the greatest. Everything in phone permissions is set to what they should be, I also cleared the data and the cache too. Downloaded the Aus Towers app and there's plenty of towers around me, signal is a little better when outside and line it up with the towers, but still will say no internet connection when trying to use it.

[Troubadour]

I can't think of anything else to suggest at this time. Good luck.

[misskirstyleighx]

I do appreciate all your help trying to solve this!

[Troubadour]

Just reviewing, it is not clear whether you have asked Samsung Support. In the forum in the Community page, bottom right is the link to Support. Of the various options there it might be best to try the phone call option first.

[Troubadour]

This is a very, very long shot. Using logic that doesn't include unknown factors.
1. I explained the logic for clearing the phone data and cache.
2. In the permissions it is clear that certain permissions were obligatory and others optional.
3. What if the obligatory components also needed their data/caches cleared?
4. Before trying this make sure all relevant data is bached up.
5. The components needing to be cleared are Call logs (couldn't find this so ignore, camera,contacts, notifications, (phone), SMS.
6. PLEASE MAKE SURE PHOTOS, Sms AND CONTACTS ARE BACKED UP., and you note which notifications are active.
7. Hell of a job if you want to try it with low probability of success.
8. Backup by going to Settings, scroll to Backups and backup to both Samsung and Google as they cover slightly different things.