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.
In addition to being untested for efficacy, physiologic monitors can increase both your stress and your baby’s stress with false alarms and unnecessary trips to the hospital. Dr. Christopher Bonafide, of the Children’s Hospital of Philadelphia wrote that parents are increasingly bringing healthy babies to the hospital over a false alarm, noting that changes that often set off a monitor are “just normal fluctuations.”
* Guest Accounts: need to allow guest accounts for grandparents, but absolutely need the ability to turn OFF the microphone for those accounts. The camera is only in the baby's room, but the microphone extends as far as sound travels, and you probably don't want your mother-in-law listening to every discussion in your home. This is a HUGE security feature that is a requirement for anything with guest accounts
Gone are the days of silently peeking into the nursery to check on your napping baby and then, whoops, accidentally waking them up (“No, no, please no!”). A baby monitor uses a camera to watch over the crib, while you carry a handheld device that lets you know what’s going on with your child at any given moment, no matter where you are in your home. There are also other monitors that track sleep or breathing either with a clip or sock.