Is WiFi reliable?

[Good User]

should I buy a thunderbolt to Ethernet adapter? I want to download OS X Mavericks and clean install it on my rMBP. I remember an iOS app needed to be downloaded via Ethernet to work correctly and users that used WiFi had problems with the app, I don't know whether that was a bug of iOS or because of WiFi that caused this issue. My internet connection is very slow and it takes 6 hours to download OS X. So can WiFi corrupt downloaded files?

 

[c0LdFire]

WiFi is fine, and newer MBPs have solid WiFi adapters. The problem will be on your router's end if you have problems - consider a newer AC router.

Otherwise, a good ol' ethernet cable will always be rock solid. Personally, I leave that to my desktop... I bought a MBP to have something portable.

 

[maflynn]

I use both and both are reliable. The ethernet adapter gives me fast performance but at times I'm on wifi and that's very stable and I've not had issues.