Go to Items > My Inventory > Utility. There you can find the Faction Change item and tap "Use" to see the bonuses of all factions (please note that the item will not actually be used).
If you don't want to change your current faction, you can simply cancel the operation by tapping on the Back icon.
Another option is to find a city belonging to the faction you are interested in, tap on it, then tap Player Profile and on the “i” icon in the top-right corner next to the faction name.
If you don't want to change your current faction, you can simply cancel the operation by tapping on the Back icon.
Another option is to find a city belonging to the faction you are interested in, tap on it, then tap Player Profile and on the “i” icon in the top-right corner next to the faction name.