Just change my first one 68 to first basic 38 on last Sunday at blue cube @ The Gardens.

This is to answer some questions.
1. celcom 68 postpaid to this 38, no problem. I did it.

2. How long to process register/mnp?
mine was 68 postpaid, from i take the q number, until paid the 1 month upfront, it take 20-30mins. Then 10 min later i received sms saying that the plan has been changed successfully.

* few months ago i did MNP from U mobile prepaid to postpaid 68, @Mid Valley, the whole process also take 30 mins.

3. How much you need to pay?
RM40.30 after GST (RM38+6%=RM40.28)

My statement date is 24 every month, so last Sunday was 26/4, so the RM40.30 now direct pay to the account, they don't ask me to settle RM68 together with this upfront. So it is mean it is RM40.30 is not " LOCK" to the account like deposit.

4. LTE speed
I will find some place near my area to show you all. For now my speedtest is around 3-5Mbps. Before this? Not sure, maybe faster.
So far satisfied with it because celcom still wider coverage if I travel outstation if compare to other telco.
But i believe every telco got their disadvantage.
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USJ 21 , 12pm 28/4/2015
5. 1+5 sup line
beware of the 500MB data, after finish quota is PAYU.

6. Max up
5GB @ RM50 still the cheapest add on quota so far.

If you ask me, want faster speed or more quota, my answer is both.
But if you ask me, pay RM68/3GB@20Mbps LTE speed, or RM38/3GB@5Mbps LTE speed?
I choose RM38.