I enjoyed good coverage in these three municipalities.
In Brooke’s Point:
In remote Barangay Isugod:
I brought two phones. One had a Smart SIM while the other had a Globe SIM. I was being cautious since I didn’t want to suffer a loss of coverage because of poor reception. That’s why I brought both SIMs. Fortunately, I never had to resort to one phone because of poor coverage of the other. The two competitors kept pace with each other. Their towers were always less than a kilometer apart and, typically, near the town’s center. At Brooke’s Point, for instance, Globe’s tower is located closer to the town center than Smart’s but I just can’t find the photo I took of it.
Bottom-line: You’ll survive with one SIM but considering how inexpensive SIMs and phones are, you might as well bring both.