Used four different telcos over the years across the Peninsula and East Malaysia, so here is the unglamorous truth: there is no single best telco, it depends entirely on where you actually spend your time. The big established players generally have the widest reach into rural and kampung areas and into East Malaysia, which matters a lot if your hometown is off the main highway, I learned this the hard way when a cheaper telco gave me zero bars at my kampung while my cousin on an older established network streamed video just fine. The value-focused budget telcos give you way more data for your ringgit and perform great in cities and along major highways, but coverage can get patchy once you head interior or to smaller towns in Sabah and Sarawak. My practical advice: ask people who actually live in or regularly visit your specific kampung and the East Malaysia spots you go, because coverage is hyper-local and no national map fully captures it. Better yet, many telcos let you try a cheap prepaid SIM first, so test it at the exact places that matter to you before committing to a postpaid contract. And seriously consider a dual-SIM phone as your insurance policy.