The latest attack on the smartphone elite by Xiaomi is called the Mi 8 Explorer Edition. On paper, the affordable flagship is the total package at a reasonable price. In this review, we will assess the Mi 8 Explorer Edition's numerous strengths but also the weaknesses that reflect its low price.
https://www.notebookcheck.net/Xiaomi-Mi-8-Explorer-Edition-Smartphone-Review.336456.0.html
is it really true that after testing mi 8 PWM only reached 100hz?? can you repeat the test?
Not to rain on your parade, but a Garmin Edge 520 is most definitely not a professional level navigation device. If there's a professionally surveyed reference point somewhere close to where you are, you'd be better off testing devices against that, rather than another consumer-level device. A professional level handheld GPS device would be something like a Trimble Geo 7X, fully loaded, but then you're talking USD 7000+.