Motorola — NEXUS 6 - Poor connectivity under WIFI Can't make / receive calls on Airtel network

Address:

Faridabad, Haryana

While the phone is under Wi fi network, cant make / receive calls in most of the cases. If Wi fi is disabled on phone, it works fine. The device has been changed once but even the replaced device has the same problem. Have upgraded to Lollipop 5.1 but no relief. As per advise of customer care, have again submitted the device at Service Center at Okhla, New Delhi on 30th March. They have been experimenting since then but no solution has yet been found. Had gone to service center on 3rd April to check. Found that the old problem has not been solved, but a new defect has developed now. On calling on the device number, the ring starts only after a delay of 5-10 seconds, whereas it should be instant. This is too frustrating for the caller and the caller may disconnect the line on not getting install ring/ response. The device is still at Service center and I do not when will I get it because they are not able to diagnose the cause ? Similar problems are stated to be faced by UK customers using Spring network as posted on various websites. I am stuck with a defective phone and no solution is being offered. In all fairness, I should be refunded my money back.