The A5 2017 I have is likewise supposedly compatible however the service hasn't been enabled just but from Telstra's side. Will work for me, A5 has the Taiwan sim card which is hotspotting/tethering the A20 with the Boost Mobile sim card Also Check out the blocked number list in your https://satta-matka68375.tdlwiki.com/4080346/receive_sms_singapore_options