I'm sure people will provide some answers on this thread but I think if you do a search on the two on this forum, the issue has been raised before (by me for one) and you'll find lots of useful info there.
OnePlus 5T review: Hands-on
Illustrator Andrés Lozano on his improv line work, brazen use of colours & hand sketching
iPhone X review
Comment envoyer gratuitement des gros fichiers ?