Experienced 403 forbidden error during launching the app. Had 3GB int'l roaming however it's been used up within 5 days. Usage merely for WhatsApp (no video calls) and sharing some photos. Not watching any videos. While in SG, 3GB can last me for at least 2weeks with 24/7 using data and watching drama serials. I suspect 8 deplete roaming data faster than local. Lost to Simba 12GB int'l roaming, more than enough data. Will consider switch to Simba.