Trustworthy place to get iPhone repaired in west Delhi

Hi all,

I was just handed down two partly broken iphone 4 . One's screen is cracked but usable and the other one's speakers aren't working. I know there are plenty of mobile phone repair shops but I am hesitant on taking it to just about anyone. Can you please recommend a trustworthy repair shop in west delhi? One that you have had an experience with. Would much appreciate it.

Thanks!

P.S.- They are both out of warranty.