Yes - absolutely. You are entitled to 90 days screen breakage warranty as well.
Honor 8 is single sim mobile phone.
Yes, Honor 8 has 3.5 mm music jack.
Basis on my extensive use of Honor 8 for about 4 months, I can say that these are the biggest advantages of Honor 8.
01) Super Aesthetics
02) Superb Camera Quality
03) Good Internal Software