I switched to Motorola's $1,300 Razr Ultra for a week - and it's ruined regular phones for me

• The $1,300 Motorola Razr Ultra is a high-performance flip phone with a unique design.
• Key upgrades make it a compelling option for foldable (and compact) phone enthusiasts, such as the 65W charging speed and 50MP ultrawide lens.
• The 4,700mAh battery looks great on paper, but yields average endurance from our testing.

The Motorola Razr Ultra is officially going on sale today, and it's one of the most interesting phones I've tested this year. No, it's not because it folds in half and fits comfortably in my jean pocket, or that there's a Retro Razr mode that transforms the UI into a nostalgia trip back to the Razr's golden days.

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Instead, it's the fact that this is arguably the closest thing we've gotten to a true flagship flip phone, with ...