Your phone might not have great battery life. Many parents who use a wifi baby monitor come to the realization that their smart phone battery life isn't so great when they are streaming a live video and audio feed from their baby monitor. If you have a newer iPhone or Android device, it will probably do pretty well, but if you have an older phone the batter is probably a bit weaker already and you will notice your battery life dropping pretty quickly during use. So definitely consider battery life and charging options for your smart phone when you are choosing between a self-contained versus wifi baby monitor.
Just because you’re pulling double diaper duty doesn’t mean you need to buy two baby monitors. If you’re a twin mom, simply look for a monitor that can accommodate add-on cameras. The Babysense Video Monitor comes with two digital cameras right out of the box (and can handle up to four), making this the best baby monitor for twins. With the push of a button, you can toggle between views of your twin babes. Plus, this monitor features digital pan/tilt and zoom, two-way communication, room temperature monitoring and a 900-foot range.