i dont think its a plan have problem, can say that currently celcom having a bad data and network problem.

I'm using celcom ip4s plan since last 4 years, all the network and data was superb without any issues (unless if there is a big celebration or events) until mid of last month i can feel the network turn up very bad, constantly keep switching from 3g to edge, sms popping with missed call alert. Tried to called them up to get explaination, and the answer remain the same, we are upgrading our network.

Today i change my plan to first38, which is effective within 24hours from now, and i'm accidently open up this threads... bad day!