Celcom said it will be consolidating its multiple billing systems into a single converged system during the upgrade exercise. This will pave the way for Celcom to provide real-time charges, credit control services as well as to provide a new experience for customers in managing their subscriptions.
During the upgrade period, Celcom said customers may face service interruptions as follows :
Monday, 21 May 2018 – customers may face service interruptions as detailed below:
- Unable to receive incoming calls and SMS up to a maximum of 15 minutes for postpaid customers between 4.00am – 6.00am.
- Unable to receive in-coming calls and SMS for postpaid customers abroad on roaming up to a maximum of four hours between 4.00am to 8.00am (Malaysia Time). Customers in Malaysia and on roaming abroad are still able to make outgoing calls, send SMS and utilise mobile data during the upgrade.
- Incoming calls and receiving SMS will be back to normal right after the upgrade completion. In the unlikely event that customers encounter service disruptions after the upgrade timeframe, they are advised to restart their mobile devices.
https://www.malaysianwireless.com/2018/05/celcom-billing-system-service-disruption/
