Which one is better?  Celcom or digi?

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I believe it's mainly because Celcom, a GLC, has fewer experienced/talented high-tech staffs than Maxis, a private enterprise.

Fyi, Celcom and other celcos buy wholesale 5G access from DNB at per Gbps pricing or according to their bandwidth capacity needs, not at per GB data pricing.

Celcos have to impose low monthly data caps/limits for their affordable mobile 4G/5G phone plans and monthly FUP data caps/limits, in order to prevent 4G/5G network hogging by certain greedy cheapo subscribers bc 4G/5G networks or cell-towers are prone to traffic congestion during peak hours from 8pm to 1am, esp on weekends - unlike telcos' fixed/immobile Fiber networks. .......

https://soyacincau.com/2022/04/07/digital-n...ffer-published/ - DNB publishes Reference Access Offer, 5G wholesale to cost telcos RM30K per Gbps monthly - 7 April 2022
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For celcom vs Maxis, which one is better for you?