My thoughts on Celcom's network -

1) Internet speed and connection outdoors are a lot faster and more stable than indoors. I can barely get good connection indoors especially at home and in the office. I guess they are trying to compensate slow indoor connection with their Celcom Wifi but the wifi is not available everywhere.

2) At least 30% of the time the internet just doesn't work even with full 3G/H connection. Either wait and try again after 3-5 minutes or turn on/off airplane mode to get back proper connection.

All of this are problems I haven't experienced when I was with Digi or Maxis but I guess I just have to suck it up with the price for what they're offering.