Other brand TWS not working in calls

I’m using Realme buds 3 neo more than a year. I bought iPhone after I bought this earphone.

This TWS earphone not working in calls in my iPhone and this earphone working properly for few days then it not working but it work properly with YouTube and media

Other TWS earphones are working properly in my iPhone but this earphone not working calls only

This earphone working properly with other phone and iPhone.

I tried full iOS restore also and I try to contact apple care also but all solutions are not working.

I’m using iPhone 11 with iOS 16.5

Hi bro, I understand. you have already tried iOS Restore and still problem not fixed means, issue could be either at iOS Software level or Realmebuds compatibility issue. Generally, we can use any bluetooth headphones and it works well with iPhone or iPad or Mac computers.

Have you tried any other bluetooth headphone with the same iPhone? if the issue is happening only with your realme buds, then it could be headphone specific problem.

We can conclude where the problem happens through this way.

I have tried other earphones with same iPhone, it working well

And this same earphone working properly with other iPhones also

that is very tricky bro. when other bt headphones work perfect with this iPhone, then it cant be iOS or iPhone related problem. that we can confirm. but even though the second case passes as you said, its still possible headphone side connectivity not being maintained could be the issue or some firmware related issues.