Comparison Huawei E3531i-1 vs Huawei E3131

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	Huawei E3531i-1	Huawei E3131
	from $32.00 Outdated Product	from $25.56 up to $27.80 Outdated Product
all specs only differences
TOP sellers	Find prices on Amazon.uk Find prices on eBay.uk	Find prices on Amazon.uk Find prices on eBay.uk
Device type	USB modem	USB modem
Connection
Communication generation	2G 3G	2G 3G
Transmission technology	GPRS EDGE W-CDMA HSUPA HSDPA HSPA+	GPRS EDGE W-CDMA HSUPA HSDPA HSPA+
Ports	USB	USB
Features
External antenna connector
Memory card slot
SIM card slot
General
Dimensions	84x27x10.5 mm	84х27х12 mm
Weight	30 g	30 g
Added to E-Catalog	march 2016	january 2015

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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.