"Best" depends on you. A heavy streamer who travels needs something different from someone who's mostly on Wi-Fi. Start with your real usage, then compare on the factors that matter.
What to Compare
Coverage Where You Live and Travel
The best price is useless without a signal. Check each carrier's coverage in the places you actually spend time before anything else.
Data You Really Use
Many people pay for unlimited but use only a few gigabytes a month (especially if often on Wi-Fi). If that's you, a smaller plan can save a lot.
Price Per Line
Compare the real monthly cost including taxes and fees, and how it changes with multiple lines.
Compare the best cell phone plans available now:
Compare Cell Phone PlansDon't Overlook MVNOs
Smaller carriers (MVNOs) run on the same major networks but often cost far less. If you don't need the latest flagship-phone deals or premium perks, an MVNO can deliver the same coverage for a fraction of the price.
Perks vs. Price
Some plans bundle streaming subscriptions, hotspot data, or international roaming. Those add value only if you'd use them — otherwise a leaner, cheaper plan wins.