Maxcom MM428 User Manual

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16. FAQ (Trobuleshoothing)
Only qualified service workers are authorized to
repair your phone. Unauthorized repair and
modifications void the Manufacturer’s warranty!
„Cannot make
phone call”
Make sure the number you are dialing is
correct. If you make an international phone
call, dial a country code before the actual
number (eg. 0049 or +49 for Germany).
If you have a prepaid card, make sure,
there are sufficient funds available on the
card to place a phone call.
„No SIM card,
emergency
calls only (112)”
Make sure the SIM Card is installed
correctly
“The phone
does not work.
The phone
does not charge
when plugged
in”
The phone might be switched off. To
switch it on, press the power key (red
receiver) for about 3 seconds.
If you have not used the phone for a long
time, the battery might be “deeply-
discharged”; to recover a deeply-
discharged battery leave your charger
plugged in, although there will be no image
on the display.
„Can I place a
phone call while
abroad?”
If you are out of the country and
ROAMING is enabled, your phone
automatically will use the foreign
telephone network. To learn more, contact
your service provider.

Maxcom MM428 Specifications

General

Display diagonal	1.8 \
Display resolution	160 x 128 pixels
Flash card support	Yes
Compatible memory cards	MicroSD (TransFlash)
Maximum memory card size	4 GB
WAP	-
Data network	GSM
SIM card capability	Dual SIM
2G bands (primary SIM)	900, 1800 MHz
Mobile network generation	2G
Multimedia Messaging Service (MMS)	Multimedia Messaging Service (MMS) is a standard way to send messages that include multimedia content to and from a mobile phone over a cellular network
Talk time (2G)	5 h
Battery capacity	800 mAh
Standby time (2G)	240 h
Subscription type	No subscription
Type	Senior phone
Product color	Black, Red
Form factor	Bar
Personal info management (PIM)	Alarm clock, Calculator, SOS

Weight and Dimensions

Depth	13 mm
Width	54 mm
Height	116 mm
Weight	78 g