Xiaomi 1 1 has four antennas and supports 4x4MIMO antenna technology.
The so-called 4x4MIMO is nothing more than the base station sending four mobile phones and receiving four data streams at the same time, which is twice as fast as the traditional 2x2MIMO, just like changing two lanes into four lanes, but the road is widened rather than changed. MIMO multi-antenna technology is the key technology of physical layer to greatly improve LTE throughput. MIMO technology and OFDM technology are called the two most important physical layer technologies of LTE. The former is multi-antenna technology, and the latter is orthogonal frequency division multiplexing technology.