I have a very weird situation on my modem.
The modem mode light turns red yesterday till now.
So I take out the celcom sim card and put it inside my mifi.  It's working fine.
Then, I try putting my digi sim card into the modem and it's working.. All the light turn green.
After that, I put the celcom sim card back to the modem, the mode light turns red again.
Do you guys have any idea what happen to the modem?
I don't want to go to celcom center first.. I am afraid that they will sim lock my modem.

Thanks for the trick.. Will mark it down.
BTW, I called the CS, CS did a network reset but still not working. After a few hours, the network recovered.

I used the huawei hilink apps where there is an option to reboot the modem. Or you can just as simple as turn off the modem, wait for 5 to 10 seconds then turn it on again.

My line was off a few times for about 10 minutes each time since yesterday. Gosh...I can't afford to go off line as I'm doing trading and every minutes/second counts

The speed is so slow until the line disconnected by itself. What happen to Celcom? 

err.. can you try to explain to a newbie like me ?

Recently went to Blue Cube in Sunway, I enquired with a Customer Service rep name Aqilah, about my interests on Celcom Broadband Wireless.

And to my surprise, she said that this wireless broadband must be permanently fixed at the registered home. Meaning if I want to bring it anywhere else in Malaysia - it wont work. I was like WTF? 

Edited :

Okay I found my answer , thanks kimpok for the clarification on your last post.
Damn . What a turn off. It means its locked based on Cell ID whatsoever.

besides I still got Digi Broadband as my other option.