Very poor or no reception in many locations around Vietnam, particularly in Phu Quoc and areas of Da Nang and Ho Chi Minh. When it works, it is very slow (I did not see it operate faster then 1.5Mbps on various tests I did). What is good is the cheap price and generous amount of data. However, to achieve a reliable service, I also purchased a 2GB Airalo eSIM that is both very fast and quite reliable, I set this up as a backup eSIM on my phone for when esimtrav didn't work.
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