i think complicated stuff is handled by different centers?
the guys at the store are likely to be working on simpler stuff.
replacing the phone's LCD panel would have required quite some technical expertise.
that's why the extra days they asked and kept your phone with them.
Yeah, I think you're right. But happy that they gave my mobile back before the timeframe given by them. I got it in 8 days, though they said it will take 10 - 15 days.