Install The (U)Sim Card - Zte MF253M Getting Started

Install the (U)SIM Card

Hold the (U)SIM card with its cut corner oriented as shown and slip it into the card holder.
NOTE:
Your device does not support the micro-SIM card and nano-SIM card or any other nonstandard SIM cards.
To avoid damaging the device, do not use those cards or any card holders.
Indicators
Indicator
POWER
WIFI
PHONE
SIG
State
Blue ON
OFF
Blue ON
Blue Blinking
OFF
OFF
Blue Blinking
Blue ON
Blue ON
Blue Blinking
Description
Power is on and external power supply is
working normally.
Power is off or external power supply is
working abnormally.
Wi-Fi works normally with no data
transmission.
Wi-Fi works normally
transmission.
Wi-Fi works abnormally or the Wi-Fi
function is disabled.
The phone is not in use.
The phone is ringing.
The phone is in calling.
Signal strength is very good or good.
Signal strength is weak.
with data
3