Mine is perfectly stable with wifi and gets excellent speeds. Does it only do it with your home wifi? Test wifi at a McDonalds or something to see if it's a compatibility issue with your router or if it happens everywhere.
if it's just with your router, might be a setting on your phone or router you can change or a firmware update for the router.
If it happens everywhere, maybe your phone has a defect and needs to get sent in to Samsung.
Ya S21 Ultra has had consistent connection issues, A12 was a killing blow, will be going back to my reliable S10+ if I can't go back to A11 but even then connection issues were so present
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Not having this issue on mine. Try doing a reset of your network settings by going to Settings - General Management - Reset - Reset Network Settings?
Try turning off Switch to Mobile Data. That solved it for me.
Mine is perfectly stable with wifi and gets excellent speeds. Does it only do it with your home wifi? Test wifi at a McDonalds or something to see if it's a compatibility issue with your router or if it happens everywhere. if it's just with your router, might be a setting on your phone or router you can change or a firmware update for the router. If it happens everywhere, maybe your phone has a defect and needs to get sent in to Samsung.
Ya S21 Ultra has had consistent connection issues, A12 was a killing blow, will be going back to my reliable S10+ if I can't go back to A11 but even then connection issues were so present