I think should be the cable issue. Was using my cousin's 3rd party cable and it's not detecting but once I reached home and use the Ori apple cable and it works.
So confirm is the cable that causes the prob.

I got mine from UMobile 1Utama, 128GB Gold(last piece).
There are still Space Grey 128 available when I was there.
What I normally do after getting my new phone is getting a screen protector and casing. I usually buy those heavy duty casing, preferably water proof case. So once I bought my phone, it will be sealed in the case forever... lol!
Question:
Is it normal for a 128 phone to get laggy after unlocking the phone?
My screen will sometimes freeze for awhile about half a second before it move. It happened quite frequent. Also, sometimes my Whatsapp buttons on top will cramp one side, the (<back) and the phone icon will cramp one side and the contact name is not visible.
btw, I did a phone restore from my 5s to 6sPlus. Does that affect the system?
hi alister88 i already been.there twice on 21 and today still.not.available and several umobile outlets... such a.bad.luck.for.me