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Overview 1
Overview
Checklist
The following items should be in the box when you unpack it:
• Sony Ericsson MD400 Mobile Broadband USB Modem
• USB extension cable
• Quick Start Guide (QSG)
• Lanyard and cover (if provided)
MD400/MD400g Communications Summary
Your MD400 keeps you in touch, enabling you to use the best available mobile service wherever you
are. It supports tri-band Universal Mobile Telecommunications System (UMTS) and quad-band
Global System for Mobile Communications (GSM):
Your MD400 supports SMS text messaging and the following communications services:
Where UMTS service with HSPA is available, your MD400 can connect at speeds up to 7.2Mb/s.
Your MD400 provides automatic fallback to UMTS where HSPA is not available and to EDGE or
GPRS service where UMTS is not available (network support required). This section describes the
services that the MD400 supports:
• High Speed Packet Access (HSPA)
HSPA is an enhancement to UMTS networks. HSDPA (High Speed Downlink Packet
Access) enables the downlink speed to be dramatically increased; up to 7.2Mbps using the
MD400. File downloads will be faster, whilst applications such as video streaming may
operate at higher quality and greater reliability. The maximum speed available depends on
the configuration of the mobile network, local conditions such as distance to the base station
and usage levels. HSUPA (High Speed Uplink Packet Access) enables the MD400 to upload
data at speeds up to 2.0Mbps.
GSM
GPRS
EDGE
850MHz
900MHz
1800MHz
1900MHZ
UMTS
HSPA
850MHz
1900MHz
2100MHz
Service Maximum Download Speed Maximum Upload Speed
HSPA 7.2Mb/s 2.0Mb/s
UMTS 384kb/s 384kb/s
EDGE 247.4kb/s 123.7kb/s
GPRS 53.6kb/s (CS-2)
85.6kb/s (CS-4)
26.8kb/s (CS-2)
42.8kb/s (CS-4)