i have this issue , calls are dropping continuously.i have a bell sim card as well , i use that no issue at all , i tried the my public sim card in my iphone 15 same issue random call drop some time after 5 min, some time after 15 -20 min.
i have same issue here , my cell phone drops calls all the time only with public telus network . i do have bell sim card no issue at all .its the public network causing the issue