happened to me the same issue, even i changed the position of the 2 sim cards and didn't work, then I did restore factory settings and it's solved completely
if you update to this june update version, there is no way back to install any previous version including android 8 oreo, as it has a different binary number
لا ينصح باستخدامه. تأثيره يزول بعد شهر ولا يحمي من الخدوش أو الكسر كما أن إزالة الجزء المتبقي في غاية الصعوبة.. من فضلك راجع هذا الفيديو والتعليقات https://youtu.be/rYU7nV1UUWo
