Android Question Sending more data using RN4020

The throughput of a chain is determined by the slowest device in that chain. When using a UART, with a set maximum speed of 115200 baud rate, the real speed can be slower than for a variety of reasons. Maximum is 115200 bits divided by the sum of a start bit 8 bits (a byte) + stop bit gives a maximum of 11520 bytes per second. Theoretically you would have consumed 622 bytes per message. A series of bits is then also used to synchronize bevided devices. You do not specify the message length of a message. Especially if the messages are small, the overhead will be really large. Then it can be interesting to collect the small messages in a buffer and only send the contents of the buffer when the buffer is full or after a certain time to flush the buffer.