Comparison ZTE MF831 vs ZTE MF823
Add to comparison |  |  |
|---|---|---|
| ZTE MF831 | ZTE MF823 | |
from $51.80 | from $37.80 | |
| TOP sellers | ||
| Device type | USB modem | USB modem |
Connection | ||
| Communication generation | 2G 3G 4G (LTE) | 2G 3G 4G (LTE) |
| 4G (LTE) | Cat.3 (100/50 Mbps) | |
| Transmission technology | GPRS EDGE W-CDMA HSUPA HSDPA HSPA+ LTE | GPRS EDGE W-CDMA HSUPA HSDPA HSPA+ LTE |
| Ports | USB | USB |
Features | ||
| External antenna connector |  |  |
| Memory card slot | | |
| SIM card slot | | |
General | ||
| Dimensions | 90x28.4x13 mm | 91x34x13 mm |
| Weight | 13 g | 45 g |
| Added to E-Catalog | march 2016 | january 2015 |
Compare ZTE MF831 and MF823
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Glossary
4G (LTE)
The 4G (LTE) mobile connection speed supported by the modem.
All modern LTE equipment is assigned one or another category (Cat.3, Cat.4, Cat.6, Cat.7, Cat.9, Cat.12, Cat.13, Cat.16, Cat.18, Cat.19, Cat.20, Cat.22), on which the transmission speed directly depends. This paragraph specifies both this category and specific speed indicators, moreover, in two parameters — for reception and for transmission. The transmission speed is always much lower, but given the specifics of mobile Internet access, this is usually not critical.
Note that equipment with different speed categories will be quite compatible with each other, however, the throughput will be limited by the capabilities of the slower device. It is also worth saying that this paragraph indicates the theoretical maximum; practical amounts can be noticeably lower (depending on the quality of the network coverage and the features of specific electronics). However, a modem with a higher speed category will perform faster in fact.
All modern LTE equipment is assigned one or another category (Cat.3, Cat.4, Cat.6, Cat.7, Cat.9, Cat.12, Cat.13, Cat.16, Cat.18, Cat.19, Cat.20, Cat.22), on which the transmission speed directly depends. This paragraph specifies both this category and specific speed indicators, moreover, in two parameters — for reception and for transmission. The transmission speed is always much lower, but given the specifics of mobile Internet access, this is usually not critical.
Note that equipment with different speed categories will be quite compatible with each other, however, the throughput will be limited by the capabilities of the slower device. It is also worth saying that this paragraph indicates the theoretical maximum; practical amounts can be noticeably lower (depending on the quality of the network coverage and the features of specific electronics). However, a modem with a higher speed category will perform faster in fact.
External antenna connector
The presence of a connector for an external removable antenna in the modem design. The meaning of all external antennas is described above; here we note that the connector makes it possible to use rather large antennas with the modem, which significantly exceed the capabilities of stock antennas (both internal and external non-removable ones). In addition, the user can choose the antenna at his discretion.