Can anyone tell me how many devices can we pair via Bluetooth to iPhone at a time..need help..till now i have not got the exact number.
(I know this is an old question, but) Apple say
The official Bluetooth specifications say seven is the maximum number of Bluetooth devices that can be connected to your Mac at once. However, three to four devices is a practical limit, depending on the types of devices used. Some devices require more Bluetooth data, so they're more demanding than other devices. Data-intensive devices might reduce the total number of devices that can be active at the same time.
https://support.apple.com/en-us/HT201171
(And, I know this is for a Mac and not an iPhone. But, perhaps this also holds here).