I am now working with BLE technology. Since I have to test with android BLE I have to purchase some android phones that capable of BLE advertisement.
I thought all the phones with BLE version 4.1+ supports BLE advertisement. So I bought a phone but that was a big mistake (it only supports central mode).
How can I detect which phones are capable of advertisement using the bluetooth specification?
What do following terms mean: A2DP, LE, aptX?