New Delhi, Dec. 6 -- Smartphones may get faster and shinier every year, but that doesn't mean your previous device has to end up abandoned in a drawer. Even without a SIM card, an ageing iPhone or Android handset can still be surprisingly useful as long as it connects to Wi-Fi. According to PCMag, here are six practical and fun ways to put that spare device back to work.

An unused handset can double as a simple home-monitoring system. Install a security camera app on both your old and current phones, position the older device where you want the feed, and keep it plugged in. A basic car-style suction mount is often enough. You can then check the live stream from your main handset whenever you need reassurance.

No webcam for your PC or yo...