Bluetooth Wireless Connectivity Versions

->It's a wireless data transfer protocol that available in all mobile device. 802.xx is IEEE(Institute of Electronics & Electrical Engineers) protocol for wireless communication.

->802.15 is for Bluetooth range is shorter compare to other protocol but latest version increase Range & Speed

->Versions of Bluetooth :

•  Version 1 :
• Speed : 721kbps 
• Range : 10m

• Version 1.1 :
• Speed : 721kbps 
• Range : 10m

• Version 1.2 :
• Speed : 721kbps 
• Range : 10m

• Version 2 :
• Speed : 2.1Mbps
• Range : 10m

• Version 2.1 :
• Speed : 3Mbps
• Range : 10m

• Version 3 :
• Speed : 24Mbps
• Range : 100m

• Version 4 :    
• Speed : 25Mbps 
• Range : 100m