Gadget Hacks How-Tos

Exclusive: Dual-Boot Android on Your iPhone (iOS 7+)

Today we are pleased to announce the end to the Apple vs. Android war. About a year ago, our Gadget Hacks team started working on a top-secret project to dual-boot both Android and iOS on the same phone—and we couldn't be more proud to announce that we've finally succeeded! Your phone can now run both iOS and Android—whenever you want. Right now.

How To: Keep an Eye on Your GPA with Pointo for Android

Even though my high school days are long behind me, I still find myself waking up in a cold sweat worrying about what my GPA is and what college I'm going to be able to get into. During those days I had to rely on coming up with my own equations to figure out my GPA between grading periods—including AP and honors course, as well as weights for pluses and minuses—but now there are smartphones to do all that thinking for me.

How To: Use Your iPhone to Sell Unwanted Gadgets Without Ever Leaving Your Home

If you want to sell all of the old electronics lying around your home, it takes a lot of work. If you go the eBay route, you have to take tons of pictures, describe it accurately, wait for a week until someone bids on it (or not), then package it, ship it, and wait for feedback. Craigslist is a little bit easier, but usually requires you driving somewhere to meet the buyer in a public place (if you want to play it safe).

How To: Android Alternatives for Instagram’s New Collage-Making Layout App

Instagram recently rolled out their new Layout app that helps users build photo collages more easily, and it's quick and easy to use with great results. Unfortunately, only those with an iOS device can enjoy Layout at the moment, with the Android version slated for release "in the coming months." Luckily, there are a trove of alternatives that you can use right now, and here are the three we like best.

How To: Lollipop's 'On-Body Detection' Smart Lock Keeps Your Android Unlocked While You’re Moving

Google recently rolled out a new Smart Lock option labeled "On-body detection" for Android Lollipop via an update to Google Play Services. As I'm sure you can gather from the name, this new function keeps your phone or tablet unlocked using the built-in accelerometer to determine whether or not your device is being carried on your body, allowing you to set it down and walk away carefree knowing that's it's locked again.

How To: Unsubscribe from Paper Junk Mail Using Your Phone

The only mail I like getting comes in the form of an Amazon package, but when I go to my mailbox, it always ends up being a pile of credit card offers and catalogs I could never see myself ordering from. Those pieces of junk mail usually end up in the trash, which is horrible when you think about all the trees that had to get cut down in order to produce them.

How To: This Game Turns a Second Android Device into a Tennis Racket, Wiimote-Style

You can find a plethora of tennis games on the Google Play Store, but if you're a true tennis fan and gaming enthusiast, you should check out Tennis Racketeering by Core Aplikacije. The game lets you use an additional Android device as a racket, giving you Wii-like abilities without Nintendo. It's simple to set up and extremely fun to play, so follow along below to see how it works.