I did and my Sim card is gone. huhu.
yo do it yourself? any tips

Yeah. My sim card kaput. Make sure you have enough tool to extract sim card and use less heat as possible.
Fortunately I use Celcom First. it is really easy to get your sim card replaced.

When you peel of you sim chip. you do have a big glue sticking on the back right? how do you tackle this problem?

hmm. nope.
that glue seems thicken already. its a big round glue at the bag.
next time I will try more gently. maybe in 6 month time. Dont want Celcom suspect me too often request new sim card. lol

Some of Fake Latest Samsung Convertible charger also sell cheap.
I have take a look at one at Lowyat. the hinge mechanism looks terrible, I doubt how long it last.
Ori also got fan sound when charging. just bring the charger close to your ear. fake might not.

Cheapest Ori charger now sells for RM300. Quickest Charge so far from 0-100 is about 2 1/2 to 3 hours with original Samsung cable and adapter

Yeah. actually using telephoto as portrait/blur mode is nicer. because 52mm do looks better at taking portrait compare to 24-26mm. Although you lost flexibility on wider angle.