[ESP32][Arduino][4G LTE CAT1] Unbox LILYGO® TTGO T-SIM A7670E R2 Module

### Quick info about TTGO T-SIM A7670E R2:
- Master Chip: ESP32
- Flash: 4MB
- PSRAM: 8MB
- Dimension: 11*2.2*3.5 cm
- Support Wifi, Bluetooth 4.2 and BLE, GPS, GSM/GPRS/EDGE (with SIM card slot): Yes
- A7670E R2 is used for region: Europe, Middle East, South Korean, Thailand
- Frequency bands: (LTE-FDD) B1/B3/B5/B7/B8/B20, (GSM) 900/1800
- Supported Protocol: HTTP, HTTPS, FTP, FTPS, DNS
- Built-in 18650 battery holder
- Support TF-Card: Yes
- Support solar panel: Yes (4-9 V Solar Panel)
- Support pin header: Yes

### I plan to use this board for:
- Solar projects that need to send data to Web (HTTPS, Google Realtime database)
- Solar projects that need to track data and store in SD card.

### I bought this board at:

### All info and instruction to use this board:

[glewiss]

Hello, Do you know what's the difference between the A7610E and the A7600 as well as the A7000 series? Thanks