Which smartphone to choose for layout testing?

Question

Layout

Good afternoon colleagues.
Please, tell me a smartphone for testing mobile layout and applications.
Now I'm looking at
Xiaomi Redmi Note 4X (the shell on Android is embarrassing, not pure Android)
https://market.yandex.ru/product/1727365510?nid=54...
ASUS ZenFone 2 Laser ZE550KL 32Gb (the screen is embarrassing: pixel density and resolution )
https://market.yandex.ru/product/14195355?nid=5472...
There are smarts from LG, but there is a weak percentage.
Let me know what you buy or use yourself.
Thank you very much in advance!!!

Answer 1

https://www.browserstack.com/ - devices on any platform. Buy xiaomi for change.

Answer 2

Take any phone you like best, which you will use.
Personally, I have been using Xiaomi mi4c for 2 years already, and I am testing the layout on it (if necessary).
No matter how problems arise ...
In general, when your hand is stuffed, and you do everything cross-browser, you score on testing from your phone.

Answer 3

Buy 3 cheap dead phones with different resolutions and try to optimize for them, and not for an eight-core 4k 4k monster. Be closer to the people, to consumers.