EPIC, with its 1.8GB blockchain size fits easily on a mobile wallet. Bitcoin's blockchain is over 350GB. EPIC will be mineable on cell phones but with bitcoin, specialized equipment is required.
Both will be bigger over time. But yes, nowadays the average smartphone has around 64 GB of storage, so the whole Epic blockchain fits easily on a mobile wallet.
How did you determine the "average smartphone"? Is this an intuitive assessment or is it by averaging out every cell phone model on some popular site?