Mobile Articles
How-to articles and troubleshooting for your mobile gear. Each one pairs with a free tool you can run in the browser.
// latest articles
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120Hz Not Working on Your iPhone? ProMotion Explained
Your iPhone screen stuck at 60Hz? ProMotion throttles itself on purpose, from Low Power Mode to a hidden setting. Here's what caps it and how to confirm 120Hz.
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How to Test a Used Phone Before You Buy
Buying a used phone? Run this checklist before you pay. Test the screen, touch, cameras, and speakers in the browser, and catch a locked or stolen handset.