As I said earlier, for me it's working well from past 1 year and use it continuously for at 2 hours a day.

Try portronics. I am using it from past 1 year and didn't get any performance issue. Also, the build quality is superb.

Airtel prepaid will not work with Watch Lte .This information is available on Airtel Website as well

esim is not needed on phone.In galaxy wearable app when you will connect the watch, then in the Network settings, you will get option to activate it through and in watch, it uses esim only.Make sure for JIO the watch will work with prepaid or postpai...

Don't know about S24 Ultra but my S23 Ultra already got the August security update.