Buy their prepaid SIM card then test by yourself. Because you also need to identify if their coverage is good at your house too
Having full coverage & good speed at the office alone is not enough. You also need to identify which perform better at home as well
Do a direct comparison between Maxis, Celcom & Digi, don't just rely on 1 telco
For me, I've tested all of the big telcos in Malaysia, Celcom, Maxis, Digi & UMobile before I make a decision on which Pospaid to register
Home Coverage: 1 is the lowest, 4 is the highest
1. UMobile
2. Celcom
3. Maxis
4. Digi
Office Coverage: 1 is the lowest, 4 is the highest
1. Celcom
2. UMobile
3. Digi
4. Maxis
But Digi speeds is always the fastest in both areas eventhough Maxis has better coverage at my office
So I picked Digi & with VoLTE, I'm enjoying them even more
No, not promoting Digi, you just have to test all the telco by yourself to experience which one is the best for you
Don't rely on what you see on your friend's phone
At my home, celcom seems to be doing ok, and i believe that maxis will as well cause my home is at a busy satellite city. Also i mainly use wifi when im at home, cause my home broadband is so much faster. it's just that in the office, it's such a suffer! While it's ok when i get out of the buildings but the moment I enter, it sucksssssss again. :<
Digi is a no no. one or two years back I tried it, the line is really terrible indoor as well as near my home. But I am not sure how it is like now.