The iPhone 4S is here - read our iPhone 4S review - so we've taken an in-depth look at the key specs and seen how it compares to its year-older sibling, the iPhone 4 and two-year old iPhone 3GS (read our iPhone 3GS review) – still going and now the budget handset of the pack.
- Best road trip gear: all of the tech needed for your next adventure
- How to attend CES 2018 in style: the TechRadar cross-country road trip liveblog
- Amazon's Alexa will soon be able to help you cook with your microwave or oven
- Nintendo Switch is now the fastest-selling video game console in US history