Most smartphone manufacturers are doing away with headphone jacks to 
make their devices slimmer. As a result, wireless headphones seem to be the way to go. Here is a guide on choosing the best wireless smartphones.
Battery Life
Bluetooth headphones have in-built batteries that are rechargeable. You can charge your headphone battery through a USB cable that is sold together with it. A good headphone battery should have a battery life of between 20 and 30 hours.
Bluetooth earbuds, however, tend to have shorter battery life. Usually, the battery life of earbuds is eight hours and can be charged via USB. True wireless earbuds last between three to five hours of full battery charge.
Headphone Controls
Wired headphones come with a remote on the cable which is absent in Bluetooth headphones. Rather than having remote controls, Bluetooth headphones have some basic commands in one of the earpieces. When buying a pair of headphones, check to ensure that the commands are easily accessible.
Design and Size
Wireless headphones are offered in three types: in-ear, on-ear, and 
over-ear. The on-ear and over-ear resemble and function the same way as wired headphones.
The in-ear option is different and has a new trend: true wireless earbud. The true wireless headphones don’t have a cable connecting the two buds as was the case with earlier models.
However, all these models work in the same way. They have charge cases that maximize the playtime. They have a short battery life of up to five hours and are more expensive than the wired earbuds.
Latency
Latency is a significant issue when it comes to Bluetooth headphones. Latency refers to the short delay between the audio signal being sent and when you hear it. You can notice this when playing a game or watching a video; the sound is not in sync with the picture. It is, therefore, important that you buy headphones that are specifically designed for gaming.