Compare Quectel Wireless EG91-VX Vs Quectel Wireless EC21-A
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| Model | EG91-VX | EC21-A |
| Price | $22 | $50 |
| Buy | ||
| Manufacturer | Quectel Wireless | Quectel Wireless |
| Form Factor | LCC Castellation | LCC Castellation |
| Dimensions | 32 x 29 x 2.4 mm | 39 x 32 x 24 mm |
| Surface Area | 928 sq. mm | 1248 sq. mm |
| Volume | 2227.2 cubic mm | 29952 cubic mm |
| Technologies | LTE | UMTS, HSDPA, HSPA+, LTE |
| Max. Upload Speed | 5 Mbps | 5 Mbps |
| Max. Download Speed | 10 Mbps | 10 Mbps |
| GSM Bands | N/A | N/A |
| WCDMA Bands | N/A | B2 (1900 PCS), B4 (AWS-1700), B5 (850) |
| LTE Bands | B4 (AWS-1), B13 (700 c) | B2 (1900 PCS), B4 (AWS-1), B12 (700 a) |
| EVDO Bands | N/A | N/A |
| 1xRTT Bands | N/A | N/A |
| Interfaces | ADC, I2C, SIM, SPI, UART, USB | ADC, GPIO, I2C, SPI, UART, USB |
| GPS Support | Yes | Yes |
| GNSS Support | Yes | Yes |
| Voice Support | Yes, PCM, Analog | Yes, PCM |
| Automotive Support | No | No |
| Temperature | -40 C to 85 C | -40 C to 85 C |
| Carrier Approvals | Verizon Wireless | AT&T, Rogers, T-Mobile (USA), Telus |
| Certifications | FCC, GCF | FCC, IC, PTCRB |