UPDATE (425PM): Maxis has provided an official statement regarding this morning’s outage which detailed the reason behind it. Read further to learn more.
UPDATE (917AM): Maxis has announced that the restoration has been completed. More details below.
ORIGINAL STORY (110AM):
The Maxis LTE and 3G network across the country is suffering an unscheduled outage as of 11.58pm Monday.
As of 3.00 am Tuesday, network connectivity has not yet been restored.
At around 8AM, Maxis has announced that its service has now been fully restored.
 INFO:Some of our customers may have experienced network issues earlier due to a technical fault. Services have now been fully restored & we’re continuing to monitor the situation to ensure stability.
— Maxis (@MaxisListens) December 11, 2018ADVERTISEMENT
 If you’re still unable to connect to internet, please restart your phone or turn on/off airplane mode. We apologise for any inconvenience caused
— Maxis (@MaxisListens) December 11, 2018
For customers that still having issues, we do suggest you to contact Maxis immediately.
Maxis has provided us with an official statement regarding this morning’s service outage in response to our inquiries earlier today.
The service outage in various parts of the country that was detected late last night was due to a technical fault during a power system upgrade at our data center. As a result of the fault, our mobile data services were affected, and our team of engineers started investigating the matter immediately to resolve the issue as soon as possible.
Within an hour of detection, we began to observe gradual restoration of services in some areas around the country, with all Enterprise services being restored fully, followed by mobile data services restored in stages
We communicated this matter to our customers via our FB, Twitter and Live Chat channels, to update them on the situation. We made a second announcement to our customers following the full restoration of all services and thorough validation. Meanwhile, we continued to monitor the situation to ensure the continued stability of our network.
We would like to apologize to our customers for the inconvenience. Providing a seamless network experience to them has always remained a top priority, and we are committed to making sure that any unforeseeable disruption is resolved in the quickest time possible.
The statement has certainly shed some light on the reason behind the service disruption that lasted for around 8 hours or even more for some users. All in all, things should have gone back to normal but if you are still facing some disruption, make sure that you reach out to Maxis.