I am reviving this thread.
Currently doing Uber, but thinking of joining Grab. What phones do you recommend?

I am using Xiaomi Note 5. Since last week got gps issue when Uber app is running (even when offline).

I just bought a Huawei Honor 5X, as someone told me that Huawei phone had 'smooth GPS'.
And he was right. My Honor 5X GPS works wonder.
Unfortunately, that's about the only thing good about it.

What I like:
very smooth GPS


What I hate:

- awful battery life
- when using Waze, while GPS is fast, calculating route is slow
- poor screen-to-body ratio
- Very easy to accidentally press the volume button. Just a light tough will do.
- no easy way to control which apps to autostart at reboot


Verdict:
NOT recommended