@Dtpw Starhub services just came to replace the 810v router. The no data connection still persists on my Oppo X5 phone but the tech guy using iPhone got no issue. I think there's a compatibility...

I got the router from Starhub 2 weeks again and that's when the nightmare started. Far from an upgrade, the "no data connection" keeps appearing on the SSID and unable to go online. Couple of modules...