Wireless USB HDD reviews

https://www.amazon.com/Passport-Wireless-Portable-External-Drive/dp/B00M9B3XZM/ref=sr_1_1?ie=UTF8&qid=1475678297&sr=8-1&keywords=Wireless+USB+HDD

https://www.amazon.com/gp/product/B00AQRUW4Q/ref=s9_simh_gw_g147_i3_r?ie=UTF8&fpl=fresh&pf_rd_m=ATVPDKIKX0DER&pf_rd_s=&pf_rd_r=VB7AHJF4C5WWDFCAEP47&pf_rd_t=36701&pf_rd_p=6aad23bd-3035-4a40-b691-0eefb1a18396&pf_rd_i=desktop

I'm looking at the above 2 items (& possibly other wireless HDD):

Q1:
For the 1st/top item, it says "Service: No service; Include installation: $64.35"
What does the above mean?

Q2:
Anyone know if WD & Seagate offers international warranty for the above 2 products?

Q3:
Does the WD item allows Smart TVs to connect to it?  The 2nd item indicates Samsung Smart TVs.
This is important as I want this feature

Q4:
Another important factor is the stability for my iOS (iPhone, iPad), Android & Macbook
to connect to for taking auto backups (as my kid & I tend to ignore & forget to trigger
it manually): ability to backup contacts, whatsapp messages, MP3, videos & apps:
have seen many Wifi services tend to drop or 'hang' & from my Windows, I'll get an
! or ? (limited access) situation or takes very long to connect: another consideration