What is the difference between IOS peripheral and android peripheral?

[Bibazavr]

I am developing an application for Android and IOS. 

Faced a problem when try connect  nRF Connect as central (on Android) to nRF Connect as peripheral (on IOS)

(screenshot from  nRF Connect as central (Android))

Why is this happening and how can this be solved?

I have the same problem when I try connect nRF52832 as central to IOS peripheral (on Android all works fine)

[Vladislav Kolodiev]

Hi Hung Bui, thank you for your help. We were able to find the problem. The iPhone has BT 4.0, but the Andriod has is BT 4.2. And iPnone doesn 't support LESC.

[Bibazavr]

Hi Hung Bui, thank you for your help. 
I apologize for the fact that you have been misled in this issue