Fidelity vs Schwab — which is better?

Both Fidelity and Schwab are top-tier full-service brokers with no trading commissions on stocks and ETFs. Fidelity is known for superior research tools, a better mobile app, and fractional shares. Schwab is known for excellent customer service, its Schwab Bank integration, and thinkorswim (the TD Ameritrade platform it acquired). Both are excellent for long-term investors; the difference is mostly in features.