Does Snapchat device ban iphones or not as iphones don't share as much info with apps as android devices .
It's correct that iOS doesn't allow the transfer of sensitive device data (like at Android) so e. g. IMEI, MAC addresses, WiFi network names of your neighbors, serial numbers (UDID) etc.
But there is a special device token (generated with several factors). So if you really spam Snapchat they could limit your permissions (shadow ban) or ban your accounts you used with this device.
On the other hand there are ways to avoid this with iOS.
For example: TruthSocial also used a device token at iOS. But it was easy to intercept the device token creation, to be rebuild with a iOS API based bot solution, without a physical iPhone.
As in androids Snapchat device bans your device and then you can't log into any account or create a new account.
For Android this is correct. Even if you factory reset your Android phone, only the classic DeviceID will change, not the other values (IMEI, MAC, WiFi names, serial numbers, Google IDs etc.).
If you want to read more details about the details behind Snapchat accounts (Android vs. iOS) and the Snapchat account creation, please have a look at my journey thread:
Snapchat Account Creator Bot - Reverse Engineering
Please make sure to read my updates also:
Snapchat Bot - Reverse Engineering - Updates