My son, who's on my account, would like an iPhone and has saved enough for a guaranteed refurbished one on Amazon. However, I see that there's a special offer if he "upgrades" to an account with a tab. I always buy phones because I prefer not to have the ongoing debt of a tab, but iPhones are expensive so perhaps that's the way to go. The special offer says: "Big Deal Alert! Upgrade to select phones with the Tab and get up to an additional $140 off your device! Hurry, offer ends July 31, 2017." I really have no idea how this works so am hoping that I'll get the very useful advice I've always received in the community.
1. Is a tab necessarily a financially bad thing? i.e. more limiting, more expensive?
2. Would he need a credit check if I wanted him to be responsible for his own account? (He's 18 but is a student in a special work-orientated program so doesn't have anything in his own name except a caisse pop savngs account.)
3. What is the "up to an additional $140" in addition to?
Thank you in advance for your answers and opinions.