That’s clearly not true, because many tests show double the throughput of 2x2 phones. The issue is negotiation of tower connections, not the use of antenna.
You are also reading this link wrong. It’s talking about TRANSMISSION, not reception. People aren’t complaining about transmission. And transmission would typically use only one antenna in a device this small, as long as the device can dynamically choose the antenna.
Ok, Good to know thanks for the clarification.