iPhone Duo Screen Care
TechTips

iPhone Duo Screen Care

A practical guide to cleaning the inner display, leaving its cover layer alone, and knowing when a persistent mark needs service assessment.

Custom Charging Sounds
TechTips

Custom Charging Sounds

A quick iPhone Duo sound-pack demo, with the free Shortcuts kit, setup requirements, quiet Focus options, and a clear distinction between previews and real battery tests.

AVS Charging Explained
TechTips

AVS Charging Explained

A high watt rating is only part of the iPhone Duo charging setup. This illustrated guide explains AVS, USB Power Delivery, the cable, and the conditions worth checking.

Why Movies Have Black Bars
TechTips

Why Movies Have Black Bars

Fit keeps the scene, Fill crops the edges, and Stretch changes shapes. A visual guide to movie playback on the iPhone Duo, with a Safari Simulator example.