GSM/GPRS cellular module. SMS, voice, GPRS via AT commands. Needs SIM card.

LoRa 433MHz long-range wireless module, SX1278. Up to 10km range, SPI interface.

Bluetooth 2.0 UART bridge module. Master and slave modes, pairs with phone.

Bluetooth 2.0 UART slave module. Simpler than HC-05, slave mode only.

2.4GHz wireless transceiver, SPI interface. 2Mbps, 125 channels, 6 data pipes.