Hi there ,lemme know if your galaxy a55 is also causing the battery issue . I bought it 3 months ago From UAE . I also charge it on slow charging mode to chek for any improvement but nothing special. I also switched to 60Hz refresh mode and turn on ...
Have you Checked it ? I think it works , when both devices are signed in to same Samsung Account , and both devices support Call and Text on other devices Feature . I never used it but i think it Should work , and may be it works otherwise it doesn't...