Verizon has unlimited data now so why do I still have to find someone with WiFi to update or download a app

whdoors,

You can download small apps on cellular. See the link below for more detail:

If you can’t download or update apps, or if apps get stuck

Good luck.

Apple enforces a size limit for cellular downloads of no more than 150MB. If what you want to download/update exceeds that, you'll have to do it connected to Wifi. This has nothing to do really with Verizon's unlimited data. Though it is surmised, this was put in place at the request of the cellular providers as a way of helping their users avoid using too much data.

Depending upon the service wi-fi may be faster

Wi-fi may be more stable

Many still pay for cellular so downloading big files would cost them a lot.