Beware of Bad Drivers
The app is convenient, and there are honest drivers. However, there are more and more malicious drivers who charge more than the meter (Aside from correct additional charges), even in the relatively safe Mai Linh. Drivers sometimes charge airport fees at a false and high amount or fake additional charges. It's very disappointing. If it's a good driver who tells me in advance, I'll thank you and pay, but it's intensely unpleasant when they rip off without permission.