Common Samsung problem worldwide unfortunately.
Hope this helps.
Not being funny but I dont buy that this is a samsung problem. I have had samsungs for 5+ years on the vodafone network as has my wife we both switched to 48 and this is the first time we seen the "refreshing sim data" message appear on the phone.....a llittle beyound coincidence if you ask me... samsung + vodafone = no message for 5+ years .. samsung + 48 = "refreshing sim data" on both phones pretty much immediatly.. one of which is brand new A41 samsung
Google the message - you'll find lots of reports of the same problem worldwide on Samsung phones unfortunately.
I'm also having this problem. New customer, recently switched from Eir. Handset is a new Xiaomi Mi 9t Pro. I have frequent network disconnects and regular atrocious internet speeds. Whenever I reboot the phone it can take upwards of a minute to connect to the carrier
Edit : I spoke with 48 support (Pravina). My APN settings were not correct for some reason. After deleting them and setting up a new APN it seems my issue is resolved. I'd recommend contacting 48 support for assistance with your Samsung
Maybe so, but, as I mentioned before, if you search the web you'll find many many reports of this issue worldwide from Samsung users in many different networks and, unfortunately, Samsung don't seem to offer them much in the way of support/explanation.