How to calculate distance between android and iphone using rssi value -

How to calculate distance between android and iphone using rssi value -

i trying read distance between android scans devices advertises , iphone deed advertiser, using bluetooth low energy ie ble.

now using rssi value there alogorithm through approximate distance between android , iphone can found?

using android.bluetooth.bluetoothadapter.lescancallback's phone call method onlescan , not able scan advertised iphone device. ibeacon able in scanned device list.

thanks in advance.

the open source android beacon library has built in function estimates distance. description of feature here: http://altbeacon.github.io/android-beacon-library/distance-calculations.html

you can see give-and-take of how works here:

understanding ibeacon distancing

android iphone bluetooth ibeacon-android